Cisco acns software deployment

cisco acns software deployment

Cisco ACNS deployment lowers costs and improves application (VoD), desktop security and antivirus updates, software packages, and configuration. Cisco ACNS Software enables several flexible network deployments. IP Spoofing (supported in WCCP mode) allows the client's IP address to be passed through to. Release Notes for Cisco ACNS Software, Release Cisco ACNS Software Deployment and Configuration Guide, Release · Cisco ACNS Software Caching. QUORA CYBERDUCK VS FILEZILLA Сообщаю Для вас, что.

It also lists the supported hardware. ACNS software, Release 5. The following hardware platforms are supported:. This section emphasizes important information regarding ACNS 5. If you have configured the media file system mediafs with ACNS 5. The cdnfs is used for pre-positioned content in the ACNS network. This situation occurs because of a design change that was implemented in ACNS 5.

Because ACNS 5. To work around this problem, follow these steps:. After you downgrade to ACNS 5. Reboot the Content Engine for the disk configuration changes to take effect. Note that the ACNS 5. To avoid this problem when downgrading from ACNS 5. Disable the local internal Websense server on the Content Engine.

Deactivate the Websense services on the Content Engine. Install the ACNS 5. When you schedule a program for a live event, we strongly recommend that you use Greenwich Mean Time GMT instead of the local time of the Content Engine that is delivering the program. If you are transmitting the live event across multiple Content Engines that span different time zones, and you schedule local time on each Content Engine instead of GMT, the live transmission is likely to fail.

In ACNS 5. However, ACNS software enforces a nonretroactive scheduling rule, which states that a multicast sender cannot send any files that arrived 10 minutes before it became a multicast sender. If you want the old content sent, you must use the distribution multicast resend EXEC command without the on-demand-only option specified. The on-demand-only option triggers a resend only when a negative acknowledgement [NACK] is issued.

In this instance, you want to trigger the resend without a NACK from the receiver. After the first multicast carousel pass is complete whether you manually triggered the resend using the distribution multicast resend command or whether the primary sender completed the pass automatically , the primary sender then determines whether the next carousel pass for content will follow a fixed schedule or whether it will be triggered by NACKs from receiver Content Engines.

To enable this behavior, use the multicast fixed-carousel enable global configuration command. In contrast, a backup multicast sender cannot be enabled for fixed carousel passes; on backup senders, carousel passes must always be triggered by NACKs from receiver Content Engines. Note When the multicast fixed-carousel option is used, the on-demand-only option of the distribution multicast command is not available.

The system displays an error message when the on-demand-only option of the distribution multicast resend command is issued in conjunction with the multicast fixed-carousel enable command. The multicast fixed-carousel enable command is only available for the ACNS 5. The default is no fixed carousel; the first carousel pass is automatic and future carousel passes are ondemand only, that is, they are triggered by NACKs. Caveats describe unexpected behavior in ACNS 5. Severity 1 caveats are the most serious; Severity 2 caveats are less serious.

Severity 3 caveats are moderate caveats. The open caveats are grouped into two categories:. This problem is related to routing failure or a routing error. Workaround: Configure routing correctly in ACNS networks so that on-demand requests are directed to the nearest Content Engine that is capable of serving the program. However, the second approach can also affect the serving of standalone on-demand programs. Symptom: The audio stream sounds discontinuous when you listen to a rebroadcast or video on demand VOD of a recorded MP4 file.

The Content Engines need to have the content present on a broadcast server but broadcast servers often have limited disk space. Workaround: Import this data into your ACNS network by moving the media to a web server origin server , and then creating a manifest file and an associated channel. Symptom: Content cannot be acquired using strong authentication from secure origin servers that use certificates from nonstandard certificate authorities CAs.

If strong authentication was chosen for content acquisitions from such a site, the acquirer error statistics will contain a Unauthorized error code, and the acquirer error log contains the following error message:. Condition: This problem occurs if the origin server uses a certificate that is not known as a standard certificate to the ACNS software acquirer. For content acquisition from secure sites over HTTPS using strong authentication, only sites with certificates from standard certificate authorities are supported.

Note With strong authentication, if any errors occur during certificate verification by the ACNS acquirer, then content from that site will not be acquired. With weak authentication, certain errors for example, a certificate has expired, certificate is not yet valid, and a subject issuer mismatch has occurred are allowed during certificate verification.

ACNS network administrators should refer to the following information to determine which CA certificate to install on their origin servers. Note that the certificate list differs based on the version of the ACNS software. For the ACNS 5. Symptom: When a Content Engine model CE is attached to a Storage Array SA-7 device, if too large a cache file system cfs partition is configured, and a combined streaming and caching workload is used, then a lower HTTP performance is observed. Note The Storage Array device is used for the cache file system cfs.

Workaround: Reconfigure the disk with a mediafs partition and reload the software. Symptom: Using FTP inside the. Workaround: Copy the. Condition: This problem occurs if the Content Engine does not have an explicit management IP address configured. Symptom: If you edit a file-based scheduled program and the Quality of Service QoS feature is configured, the revised program retains the QoS configuration even if you disable the QoS feature.

Condition: This problem occurs only with file-based scheduled programs; it does not occur with live programs. Workaround: The only known workaround is re-creation. To remove the QoS configuration, delete the program and then re-create the program without configuring the QoS feature. Symptom: The API program is created with multicast settings, with no multicast address ports specified within the program file.

The program address pool is configured, including the pool TTL. Symptom: A constant stream of bandwidth error messages one about every 2 seconds is reported in the syslog. As the following sample messages indicate, these messages are not very useful.

Condition: The http l4-switch spoof-client-ip enable global configuration command turns on IP spoofing on a Content Engine that is functioning as a caching engine. When a rule action user-server global configuration command is used, the Content Engine stops spoofing the client IP address and instead uses its own IP address to fetch the content. Condition: This problem occurs if there are two interfaces and you configure interface redundancy using both interfaces.

You must use a dummy address for the physical addresses. You then configure a real address that floats between the two interfaces. If you then configure SNMP traps, the traps are being sourced from the dummy address and not the routable address.

Therefore, the NMS host does not know where the trap is coming from. Symptom: You experience problems when trying to add rules that have the pipe character. Workaround: To achieve the OR functionality, add multiple rules that do not contain the pipe character. Condition: This problem occurs because of an apparent file system corruption; the cdnfs metadata files have the wrong content the content is internally consistent but in the wrong file. This happens infrequently.

For example, in this case, cdnfs content was being updated and a crash occurred because of a kernel panic which occurs infrequently. Workaround: Although there is no known workaround to stop the syslog messages shown above, lookups for the target URL listed in the syslog message may succeed if the ACNS software has created a new cdnfs entry for the target URL. If the URL is not found, a way to force it to be replicated is to modify the file on the origin server for example, by using the touch command on a UNIX-based origin server.

Alternatively, you can enter the acquisition-distribution database-cleanup start command on the affected Content Engine; this queries the cdnfs for all the objects that are supposed to be on the Content Engine. Missing objects should be detected and replicated. Symptom: Proxy requests to the Content Engine proceed to allow mode if allow mode is enabled or are blocked if allow mode is disabled when the Websense URL filtering mechanism is configured to use the local Websense server.

Because the connections from the Content Engine to the Websense server time out, all requests go to allow mode until all 40 connections are exhausted. This makes it appear as if the Websense server is not responding. After all 40 connections are attempted, the Content Engine successfully connects to the Websense server and works properly thereafter. Symptom: The local internal Websense server gets enabled on the Content Engine unexpectedly.

Condition: This problem occurs if the local Websense server is disabled and the IP address of the Content Engine is changed. Workaround: Issue the no websense-server enable command to disable the local internal Websense server on the Content Engine. Symptom: When you click links from the table of contents or the index of the ACNS Content Distribution Manager online help, the links open in the same pane, that is, the left pane, which contains the table of contents and the index, instead of opening in the right pane, which contains the help topics.

Condition: This problem occurs after you install Microsoft security update MS Symptom: Websense Manager cannot connect to the local Websense server the Websense server runs as a separate process on the Content Engine instead of running on a separate system. Condition: This problem occurs if an external IP address is used from the Websense Manager to connect to the local Websense server Version 5.

You specify the WCCP transparent proxy authentication information by using the acquirer proxy authentication transparent global configuration command. Content acquisition works correctly. You remove the proxy authentication through the no acquirer proxy authentication transparent command. Content acquisition stops working, which is expected. You restore proxy authentication using the basic-auth-disable option of the acquirer proxy authentication command.

Content acquisition should work, but it does not. Content acquisition results in a error message. Workaround: Restart the acquirer through the acquisition-distribution stop and acquisition-distribution start commands. Workaround: If you do not want the rule to be applied for some of the rule actions, you can change the rule configuration as required.

Symptom: An FTP client application stops receiving data for a data transfer operation such as a directory listing ls or file transfer GET. Workaround: Remove the Content Engine active mode configuration by issuing the following configuration command:. When this symptom occurs on an FTP client application, press Ctrl-C simultaneously to stop the partial data transfer operation.

When you downgrade from ACNS 5. For example:. Then only the first pattern-list configuration is used. All other pattern lists are lost. Workaround: There is no known workaround. However, the cache process will restart and work normally after such a crash. Symptom: When a rule with the redirect action is configured with a URL of 0 and with a matching pattern, the cache process crashes if the request matches the pattern.

Condition: This occurs when you configure a numeric value of 0 for the redirected URL for example, if www. Symptom: When MPEG-2 is specified as the preferred format in a channel, programs cannot be created in that channel. Manually set the bandwidth while creating the program as follows:. Symptom: The manifest validator fails to fetch the XML file if the source is authenticated.

Condition: This problem occurs only if the file is located at an authenticated location. Workaround: Put a copy of the manifest file in a nonauthenticated location to use the manifest validator. The status of a content item on the root Content Engine appears as "Error-Valid" when the object is initially acquired. The status should be "Pending. Clients are unable to access a program during its scheduled playback time. The burst of errors continues for approximately 10 to 12 seconds, stops, and then recurs within a few hours.

On a slow link for example, 11 kbps , when the load monitor is in load bypass because of other HTTP traffic, the FTP control connections are handled correctly; however, the FTP data connections experience a second delay before rejecting the data connection.

Proxy requests that include the request header "Expect: continue" fail and a " Expectation Failed" response code is generated. Objects that are protected with basic authentication are served from the Content Engine cache without being queried for authentication credentials.

This problem can occur if all the following conditions exist: 1 the Content Engine is configured to use the basic authentication method to authenticate HTTP requests, 2 server-side persistent connections are enabled, and 3 the origin server is a Microsoft IIS 4. This problem only occurs when a dynamically changed content referred by a static URL is involved and the content has already been cached.

This problem can occur if the Content Engine is reloaded and the ip path-mtu-discovery enable global configuration command is not used. The show statistics distribution mcast-data-sender detail EXEC command shows that the multicast sender is not making any progress even though several files are ready to be sent.

This problem occurs if multicast is enabled on a multicast sender and the Content Engine clock has been changed. The CMS service fails to start, and the syslog. When a web page is NTLM-protected and the links on the page point to a different origin server than the one from which the web page is retrieved, clients receive a Bad Request error message when they attempt to access such links on the page.

The multicast cloud information for the sender Content Engine, which was configured through the Content Distribution Manager GUI, is not correctly reflected on the sender Content Engine. This problem occurs if the Content Engine was previously configured as the backup sender and then reconfigured as the primary sender for this cloud. This problem can occur if there are a large number of system messages in the Centralized Management System cms database table.

This problem occurs if you configure more than one rule action use-icap service that uses the same pattern list number and if one of these rules is unconfigured. Certain Windows Media files that contain markers with or without embedded scripts cannot be acquired through the MMS streaming protocol. The CMS process does not update the stream scheduler if the parent location is changed.

If the HTTP persistent-connections timeout is set so high that the maximum number of file descriptors is exhausted, then no additional files can be opened. If no additional files can be opened, file errors occur if you perform such basic operations as showing the running configuration using the show running-config EXEC command. When the Content Engine is part of a device group, the Content Engine configuration partially disappears. In the Content Distribution Manager GUI, the Content Engine configuration window indicates that the Content Engine is being managed locally as opposed to being managed centrally through the device group.

This problem occurs if the Content Engine exhausts file descriptors, which results in incomplete output of the show running-config EXEC command. This causes local central management to think that the configuration of the Content Engine has been changed locally, and it sends that change to the Content Distribution Manager, where it is recorded as a local override.

If the Content Engine is operating in proxy mode, it can stop accepting connections, or if the Content Engine is operating in WCCP mode, it can go in and out of overload bypass mode. If this problem occurs, syslog messages such as the following are reported:. The problem only occurs when artificially generated malformed packets resemble the patterns of fragmented generic routing encapsulation GRE packets.

However, the ICAP process automatically restarts on its own. Certain TN applications that is, "green screen" applications time out and hang. This problem can occur if the TN application is going through a Content Engine. Persistent server and client HTTP connections are terminated prematurely.

This problem occurs if the server responds to an HTTP revalidation request If-modified-since with a Not modified response and does not provide the object length. If an HTTP request must be authenticated by a remote server and a Content Engine is being used, the Citrix client application fails to launch. Broken links and images or an error message is returned, indicating that the server is busy. The status of the disk drive on the Content Engine is reported as "Problematic. The Content Engine Network Module can report disk errors over time.

These errors indicate that the "ECC Uncorrectable" error message is the most commonly reported error message. This problem occurs because of an error condition on the socket connection between the FTP process and the cache process. The output of the show statistics EXEC commands shows error messages such as the following:. This problem can occur if you have configured URL filtering with a custom blocking message on the Content Engine. It can take approximately 30 seconds to display the complete list of devices in the Content Distribution Manager GUI , or to switch between device configuration windows.

TV-out functionality does not work on newer properly equipped CE and CE models because a newer revision of the audio video AV hardware is used. The show hardware or show tvout EXEC commands identify the affected units:.

When HTTP authentication is enabled, the syslog. Rebroadcast programs may not play the list of files in the sequence desired. This problem can occur with all rebroadcast programs, because the media index attribute is not currently being.

This problem occurs if you set the time on the Content Engine to a time that is earlier than the current time. This problem can occur if a Content Engine is sending an enormous number of syslog messages to the Content Distribution Manager, which forces the Content Distribution Manager to handle and log all of these messages. It is divided into two access levels, user and privileged.

If an ACNS user logs in to the Content Engine with a normal user account privilege level of 0 instead of an admin or admin-equivalent user account privilege level of 15 , the user must enter the admin password in order to access privileged-level EXEC mode.

Instead, the Content Engine tries to serve the content from the cache file system cfs or tries to fetch the content from the origin server, depending on the existing configuration of the Content Engine. The ignoreOriginPort attribute controls content playback and allows the use of nonstandard ports to play back pre-positioned content. The ignoreOriginPort attribute is supported under the following tags in the manifest file:.

The ignoreOriginPort attribute is optional. Valid values for the ignoreOriginPort attribute are true or false. The default is false. For example, if content is acquired as:. For more information about using a manifest file to acquire and distribute content in an ACNS 5. If you have channels for live programs configured in your ACNS 5. Also, make sure that proxy authentication is not enabled on any receiver Content Engines that might be in the logical, hierarchical path between the root Content Engine and the receiver Content Engine that is going to serve the live stream to the requesting clients.

If a live stream encounters any device that requires proxy authentication, the stream will be dropped before it reaches its destination. If your network is set up with intermediary devices that require proxy authentication, you can work around the problem by configuring rules to bypass authentication on these devices.

For example, to enable the formation of a unicast splitting tree and, in turn, enable live broadcasting from all receiver Content Engines, you can specify the following rule on all of the parent Content Engines in the channel:. With ACNS software, you can use cdn-url as an optional attribute of distributed content. This option only works when the media is pre-positioned on the Content Engine and the origin server does not have to be contacted for any reason to fulfill the request.

You cannot use the cdn-url attribute if the origin server needs to be contacted to fulfill the request, for example, in such situations as the following:. Note Do not use the cdn-url attribute in the specified situations.

On page , replace the bulleted item under the "Item" section with the following. The cdn-url attribute associates a file path with the content item in the manifest file. The manifest file allows the file path for the cdn-url attribute to be specified independently of the file path from which the content items are to be acquired from the origin server src attribute , allowing the publishing URL to differ from the content acquisition URL.

If the content is live or requires playback authentication, the origin server from which the content is acquired must be contacted. Therefore, two URLs must exist for the same content item, and the URL specified in the cdn-url attribute must exist on the origin server at all times.

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There is little or no effect on your business operations. Information about Cisco products, technologies, and network solutions is available from various online and printed sources. Both new and experienced users will benefit from these publications. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources.

You can access Packet magazine at this URL:. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can view current offerings at this URL:. Download this chapter. Audience This guide is intended for network administrators and content managers.

Organization This document is organized in the following manner: Chapter. Organization This document is organized in the following manner: Chapter Title Description Chapter 1. Chapter 3. Chapter 2. Getting Started. Chapter 4. Chapter 5. Chapter 6. Chapter 7. Creating and Managing Programs. Chapter 8. Configuring Caching Services.

Describes how to configure caching services on Content Engines. Chapter 9. Configuring Streaming Media Services. Describes how to configure streaming media services on Content Engines.

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The default is false. For example, if content is acquired as:. For more information about using a manifest file to acquire and distribute content in an ACNS 5. If you have channels for live programs configured in your ACNS 5. Also, make sure that proxy authentication is not enabled on any receiver Content Engines that might be in the logical, hierarchical path between the root Content Engine and the receiver Content Engine that is going to serve the live stream to the requesting clients.

If a live stream encounters any device that requires proxy authentication, the stream will be dropped before it reaches its destination. If your network is set up with intermediary devices that require proxy authentication, you can work around the problem by configuring rules to bypass authentication on these devices.

For example, to enable the formation of a unicast splitting tree and, in turn, enable live broadcasting from all receiver Content Engines, you can specify the following rule on all of the parent Content Engines in the channel:. With ACNS software, you can use cdn-url as an optional attribute of distributed content. This option only works when the media is pre-positioned on the Content Engine and the origin server does not have to be contacted for any reason to fulfill the request.

You cannot use the cdn-url attribute if the origin server needs to be contacted to fulfill the request, for example, in such situations as the following:. Note Do not use the cdn-url attribute in the specified situations. On page , replace the bulleted item under the "Item" section with the following. The cdn-url attribute associates a file path with the content item in the manifest file.

The manifest file allows the file path for the cdn-url attribute to be specified independently of the file path from which the content items are to be acquired from the origin server src attribute , allowing the publishing URL to differ from the content acquisition URL. If the content is live or requires playback authentication, the origin server from which the content is acquired must be contacted.

Therefore, two URLs must exist for the same content item, and the URL specified in the cdn-url attribute must exist on the origin server at all times. Otherwise, pre-positioned content playback will fail. In general, you should not use the cdn-url , cdnPrefix , or srcPrefix attributes if playback authentication is required or if the content is live. If you use FTP to acquire content and the content type is not specified in the manifest file and the cdn-url attribute is used to alter your publishing URL, the cdn-url attribute must have the correct file path extension for example,.

Otherwise, the incorrect content type will be generated and you cannot play the content. The following example correctly shows the publishing URL with the same file path extension. The following example is incorrectly written, because it does not specify the file path extension.

The following is additional information regarding multicast sender interoperability. All Content Engines have been successfully enabled for multicasting. Only receivers running ACNS 5. The backup sender is using ACNS 5. The backup sender responds to the NACK. If it does not, the receiver is not able to obtain content. Cases 4 through 6 discuss the backup sender operating under these conditions. Symptom: The Content Distribution Manager does not send related configuration information and configuration changes to the Content Engine running the earlier software version.

This results in the the Content Engine not being able to identify itself as the multicast backup sender. This scenario might also occur if a backup sender using ACNS 5. The receiver is running ACNS 5. If the primary sender fails, the receiver sends the NACKs to the backup sender, and when it receives a NACK failure as expected, the receiver retries the primary sender.

The receiver alternates sending NACKs between the senders until the primary sender becomes active again. The primary sender sends the first carousel pass of content without needing to receive a NACK. The primary sender then waits for the receiver's NACK to trigger further carousel passes if more than one carousel pass is configured. The sender behaves like a primary sender running ACNS 5. That is, it sends the first round of content without requiring a NACK to trigger the carousel pass.

However, the sender is unable to continue making carousel passes because the receiver is unable to send NACKs. The sender is able to perform carousel passes and the receiver is able to send NACKs for missing content; however, there is no support for a backup sender or for configuring the NACK interval multiplier.

The receiver is using ACNS 5. Upgrade the sender first, and then upgrade the receivers. This documentation update applies to the following three ACNS 5. These two usage modes differ in the protocol used by the client to issue the FTP request. The ACNS 5. If the object is not in its cache, it fetches the object from an upstream FTP proxy server if one is configured , or directly from the origin FTP server.

Only base64 encoding is supported for authentication. For unknown file types, the proxy uses binary transfer as the default and instructs the browser to save the downloaded file instead of opening it. The FTP proxy returns a formatted directory listing to the client if the FTP server replies with a known format directory listing.

The formatted directory listing has full information about the file or directory and provides the ability for users to choose the download transfer type. The Content Engine operating as an FTP proxy supports passive and active mode for fetching files and directories.

In native FTP caching mode, if the ftp proxy active-mode enable global configuration command is used, then the Content Engine uses the same mode with the FTP server for the data connection as the client used to reach the Content Engine, which can be either active or passive. If the ftp proxy active-mode enable command is not used, the Content Engine uses passive mode with the FTP server for the data connection.

As the following partial output of the show ftp command shows, if you have used the ftp proxy active-mode enable command, the Content Engine the nontransparent proxy server that is functioning as a native FTP proxy server adheres to the client's mode active or passive :. The following is an example of the URL format that the Content Engine creates for a specific user when binary mode is being used.

In the first example, the user logs in with an actual username name "huff" and is able to retrieve the requested file test. In the second example shown below , the user logs in as an anonymous user and cannot retrieve the requested file test. Turn on native FTP caching. The service group number for this service is Specify an interface on which the native FTP caching service will run.

Configure the router to use the outbound interface for the FTP caching service. It does not apply to native FTP caching. If the active mode fails, the Content Engine attempts to use passive mode for the data connection. If this command is not configured, the Content Engine first attempts to use passive mode with the FTP server for the data connection, and then automatically switches to active mode if passive mode is not supported by the FTP server.

If this command is not configured, the Content Engine uses passive mode with the FTP server for the data connection. All of the other mentioned commands for example, the ftp age-multiplier command, the ftp max-ttl command, the ftp object command, the ftp proxy command, the ftp reval-each-request command, and the ftp min-ttl command apply only to FTP-over-HTTP caching.

You can configure a router that is running WCCP Version 2 to run any of the cache-related services listed in the following table. WCCP Version 1 routers support only the web cache service service group 0. Configure the router to use the outbound interface for the native FTP caching service. Configures the FTP mode for establishing the data connection. Sets the anonymous password string for example, wwwuser cisco.

Sets the parameters to direct outgoing FTP requests to another proxy server. If this command is not used, the Content Engine first attempts to use passive mode with the FTP server for the data connection, and then automatically switches to active mode if passive mode is not supported by the FTP server.

If this command is not used, the Content Engine uses passive mode with the FTP server for the data connection. Debugs the cache proxy that is used for native FTP caching the cache proxy resides on the Content Engine that is operating in nontransparent proxy mode to support native FTP requests.

Debugs the native FTP client. Debugs the control proxy that is used for native FTP caching the control proxy resides on the Content Engine that is operating in nontransparent proxy mode to support native FTP requests. The output of the debug ftp-proxy cache command and portions of the debug ftp-proxy proxy-comm command output are written to the syslog at debug priority level. A group-type pattern is one of the types of rule patterns that you can add to a pattern list.

The default operation for the group-type pattern is an OR operation. The default is OR. In the following example, any requests from the source IP address src-ip If ACNS 5. This restriction only applies to a Content Engine CE model that has an optical Gigabit Ethernet interface; the speed of this interface cannot be changed. Note that on these newer Content Engine models, the Mbps setting implies autosense for example, you cannot configure the Gigabit Ethernet interface to run at Mbps and half duplex.

The pace global configuration command is no longer supported as a separate command in ACNS software, Release 5. The functions of the pace command have been incorporated into the bitrate and bandwidth global configuration commands. Configures the maximum pacing bit rate in kilobits per second kbps for large files sent using the HTTP protocol. Note The aggregate bandwidth used by all concurrent users is still limited by the default device bandwidth, or by the limit configured using the bandwidth command.

In the pre-load url-list-file path global configuration command, the value for path can be a URL as well as a local file path. Setting the depth level default to 0 would be useful if you have specified URLs in preload. For ACNS 5. URL [ depth ] [ domain-name : host-name : host-domain-name ]. The separator is required. If NTLM-related information is not present in the preload URL list file entry, the authentication scheme falls back to basic authentication. To preload authenticated content on the Content Engine, you must specify the username and password in the URL list file as follows:.

Note To enable the Content Engine to fetch specified objects and to store these preloaded objects in its local cache, you must use the http cache-authenticated ntlm global configuration command. This command has no arguments or keywords. There is no default behavior or values. The following is an example of the output of the show statistics icap command. Note Hinted files contain hint tracks, which store packetization information that tells the streaming server how to package the media data.

The streaming server uses the packetization information in the hint tracks to stream the media data to the network. However, you can pre-position on-demand programs based on nonhinted files such as. If a program that you want to deliver over an ACNS network uses live multicast mode, you must use the same multicast IP address for the audio, video, and SlideCast streams.

Your product shipped with a minimal set of printed documentation. The printed documentation provides enough information for you to install and initially configure your product. Refer to the Documentation Guide for a complete documentation roadmap and URL documentation links for this product. Note The term "locally deployed Content Engine" refers to a Content Engine that was initially configured with the autoregistration feature turned off so that the Content Engine would not automatically register with the Content Distribution Manager.

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Strong Cert Authentication rejects certificate due to error: ssl error code. ContentEngine config wccp ftp router-list-num number. ContentEngine config wccp version 2. ContentEngine config ftp proxy active-mode enable. ContentEngine config ftp proxy incoming port. ContentEngine config no ftp proxy active-mode enable. BindException: Address already in use:. BindException: Address already in use at java.

BindException: Address already. ContentEngine config rule pattern-list 1 downstream-CE-ipaddress. ContentEngine config rule no-auth pattern-list 1. ContentEngine ftp server. Name server:huff : anonymous. ContentEngine config wccp ftp? ContentEngine config wccp ftp mask? ContentEngine config wccp ftp router-list-num? Router config ip wccp Router config interface type number. Router config-if ip wccp 60 redirect out. ContentEngine show wccp services.

ContentEngine show wccp modules. ContentEngine show wccp masks? Configured Proxy mode FTP connections on ports: 80 Service Group Number. ContentEngine show wccp routers. Routers Configured and Seeing this Content Engine 1. ContentEngine config rule enable.

ContentEngine config rule action no-auth pattern-list 1 protocol all. ContentEngine config rule pattern-list 1 src-ip The default is 3. Contacts Feedback Help Site Map. FTP caching heuristic modifiers. The names of the two new fields are:. Instead, it uses a custom login window that was added in the ACNS 5. With this change, you are no longer required to close your browser window on logout or GUI timeout. Instead, your browser will automatically be redirected to the login window.

The ignoreOriginPort attribute controls content playback and allows the use of nonstandard ports to play back pre-positioned content. The ignoreOriginPort attribute is supported under the following tags:. The ignoreOriginPort attribute is optional. Valid values for the ignoreOriginPort attribute are true or false.

The default is false. For example, if content is acquired as:. For more information about using a manifest file to acquire and distribute content in an ACNS 5. In ACNS 5. Instead, it focuses on categorizing those Internet sites that are considered unproductive or inappropriate for typical business or educational environments. The 30 predefined SmartFilter Control List categories encompass a wide variety of material.

Some categories are focused on reducing legal liability of a company. These 30 categories are set to "Deny" in the default SmartFilter software policy. Some categories contain such sites as MP3 sites sites that content that consumes excessive bandwidth. The remainder of these 30 categories are considered unproductive or inappropriate for business or educational environments. SmartFilter software also provides ten user-defined categories that allow you to further tailor access by defining and filtering sites that are not included in the SmartFilter Control List.

Additionally, you can exempt any site that you would like specific groups or individuals to access quickly and easily. Secure Computing uses automated tools to search the Internet continuously for new sites and pages that meet the content criteria for the 30 predefined Control List categories.

Candidate sites are presented to Secure Computing Control List technicians for personal review. Note Secure Computing Corporation cannot guarantee that it has identified every potential site in a given category. Because identifying a particular site as belonging to a particular category involves judgment and opinion, the SmartFilter Control List that is provided may not include sites that a particular organization may wish to control.

The Download Setup window tracks the download site, your username, and your password. If you do not download an updated SmartFilter Control List at least monthly, the SmartFilter software considers the Control List "expired," and invokes the action that you specified in the SmartFilter License window. To stop SmartFilter from restarting the cache process, complete the following tasks, which include manually downloading the SmartFilter control list to the Content Engine:.

Disable the SmartFilter feature on the Content Engine. For example, enter the no url-filter http smartfilter enable global configuration command to disable this feature through the Content Engine CLI. Remove the sfcontrol file from the Content Engine. Reenable the SmartFilter feature on the Content Engine. For example, enter the url-filter http smartfilter enable global configuration command to disable this feature through the Content Engine CLI.

In the upper left panel of the SmartFilter Administration Console, choose the plug-in that corresponds to the Content Engine that is experiencing the problem. From the Control List folder, choose Download Setup. The Download Setup window appears. In the Download Setup window, verify that the download settings are properly set for a manual download. In the Download Setup window, click the Download Now button.

There was no mechanism in place to fetch the preload file securely. This section emphasizes important information regarding ACNS 5. If you have configured the media file system mediafs with ACNS 5. The cdnfs is used for pre-positioned content in the ACNS network. This situation occurs because of a design change that was implemented in ACNS 5. Because ACNS 5. To work around this problem, follow these steps:.

After you downgrade to ACNS 5. Reboot the Content Engine for the disk configuration changes to take effect. Note that the ACNS 5. To avoid this problem when downgrading from ACNS 5. Disable the local internal Websense server on the Content Engine. Deactivate the Websense services on the Content Engine.

Install the ACNS 5. When you schedule a program for a live event, we strongly recommend that you use Greenwich Mean Time GMT instead of the local time of the Content Engine that is delivering the program. If you are transmitting the live event across multiple Content Engines that span different time zones, and you schedule local time on each Content Engine instead of GMT, the live transmission is likely to fail.

However, ACNS software enforces a nonretroactive scheduling rule, which states that a multicast sender cannot send any files that arrived 10 minutes before it became a multicast sender. If you want the old content sent, you must use the distribution multicast resend EXEC command without the on-demand-only option specified. The on-demand-only option triggers a resend only when a negative acknowledgement [NACK] is issued.

In this instance, you want to trigger the resend without a NACK from the receiver. After the first multicast carousel pass is complete whether you manually triggered the resend using the distribution multicast resend command or whether the primary sender completed the pass automatically , the primary sender then determines whether the next carousel pass for content will follow a fixed schedule or whether it will be triggered by NACKs from receiver Content Engines.

To enable this behavior, use the multicast fixed-carousel enable global configuration command. In contrast, a backup multicast sender cannot be enabled for fixed carousel passes; on backup senders, carousel passes must always be triggered by NACKs from receiver Content Engines.

Note When the multicast fixed-carousel option is used, the on-demand-only option of the distribution multicast command is not available. The system displays an error message when the on-demand-only option of the distribution multicast resend command is issued in conjunction with the multicast fixed-carousel enable command. The multicast fixed-carousel enable command is only available for the ACNS 5. The default is no fixed carousel; the first carousel pass is automatic and future carousel passes are ondemand only, that is, they are triggered by NACKs.

Caveats describe unexpected behavior in ACNS 5. Severity 1 caveats are the most serious; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats. The open caveats are grouped into two categories:. This problem is related to routing failure or a routing error. Workaround: Configure routing correctly in ACNS networks so that on-demand requests are directed to the nearest Content Engine that is capable of serving the program. However, the second approach can also affect the serving of standalone on-demand programs.

Symptom: The audio stream sounds discontinuous when you listen to a rebroadcast or video on demand VOD of a recorded MP4 file. The Content Engines need to have the content present on a broadcast server but broadcast servers often have limited disk space. Workaround: Import this data into your ACNS network by moving the media to a web server origin server , and then creating a manifest file and an associated channel. Symptom: Content cannot be acquired using strong authentication from secure origin servers that use certificates from nonstandard certificate authorities CAs.

If strong authentication was chosen for content acquisitions from such a site, the acquirer error statistics will contain a Unauthorized error code, and the acquirer error log contains the following error message:. Condition: This problem occurs if the origin server uses a certificate that is not known as a standard certificate to the ACNS software acquirer. For content acquisition from secure sites over HTTPS using strong authentication, only sites with certificates from standard certificate authorities are supported.

Note With strong authentication, if any errors occur during certificate verification by the ACNS acquirer, then content from that site will not be acquired. With weak authentication, certain errors for example, a certificate has expired, certificate is not yet valid, and a subject issuer mismatch has occurred are allowed during certificate verification. ACNS network administrators should refer to the following information to determine which CA certificate to install on their origin servers.

Note that the certificate list differs based on the version of the ACNS software. For the ACNS 5. Note The Storage Array device is used for the cache file system cfs. Workaround: Reconfigure the disk with a mediafs partition and reload the software. Symptom: Using FTP inside of the. Condition: Either you will receive an error in the Content Distribution Manager GUI when you are creating the definition for the upgrade when the.

Workaround: Copy the. Condition: This problem occurs if the Content Engine does not have an explicit management IP address configured. Symptom: If you edit a file-based scheduled program and the Quality of Service QoS feature is configured, the revised program retains the QoS configuration even if you disable the QoS feature.

Condition: This problem occurs only with file-based scheduled programs; it does not occur with live programs. Workaround: The only known workaround is re-creation. To remove the QoS configuration, delete the program and then re-create the program without configuring the QoS feature. After these errors occur, the configuration for the system's nonadministrative users, who have a privilege level of 15, is lost after the reload. Workaround: Log in to the Content Engine as a user who is configured with a privilege level of 15 before you issue the write memory command.

Condition: This problem occurs when the http persistent-connections server-only global configuration command is used. Workaround: Disable the http persistent-connections server-only command. Condition: The API program is created with multicast settings, with no multicast address ports specified within the program file.

The program address pool is configured including the pool TTL. Symptom: Users must reenter their username and password information in the login popup window in order to be authenticated. Condition: This problem occurs when the authentication realm is changed on the Content Engine and the users have been authenticated with the old realm and have checked the Save username and password check box in the popup window.

Users must then reenter their username and password information. Symptom: A constant stream of bandwidth error messages one about every 2 seconds is reported in the syslog. As the following sample messages indicate, these messages are not very useful. Symptom: The cache application exits because of an intentional error checking in the code that fails, which causes a brief interruption in caching services while the application restarts. Workaround: Remove the configuration for caching responses with the "Vary: User-Agent" response header by using the following global configuration command.

Condition: The http l4-switch spoof-client-ip enable global configuration command turns on IP spoofing on the Content Engine that is functioning as a caching engine. When a rule action user-server global configuration command is used, the Content Engine stops spoofing the client IP address and instead uses its own IP address to fetch the content. Condition: This problem occurs if there are two interfaces and you configure interface redundancy using both interfaces.

You must use a dummy address for the physical addresses. You then configure a real address that floats between the two interfaces. If you then configure SNMP traps, the traps are being sourced from the dummy address and not the routable address. Therefore, the NMS host does not know where the trap is coming from. Symptom: Users experience problems when they access FTP servers that require a username and password. Instead, the Content Engine should send an empty password.

Symptom: You experience problems when trying to add rules that have the pipe character. This has not been seen on any other system, and the cause is not yet known. Condition: This problem occurred on this one system immediately after the upgrade described above. Condition: This problem occurs because of an apparent file system corruption; the cdnfs metadata files have the wrong content the content is internally consistent but in the wrong file.

This happens infrequently. For example, in this case, cdnfs content was being updated and a crash occurred because of a kernel panic which occurs infrequently. Workaround: Although there is no known workaround to stop the syslog messages shown above, lookups for the target URL listed in the syslog message may succeed if the ACNS software has created a new cdnfs entry for the target URL. If the URL is not found, a way to force it to be replicated would be to modify the file on the origin server for example, by using the touch command on a UNIX-based origin server.

Alternatively, you can enter the acquisition-distribution database-cleanup start command on the affected Content Engine; this queries the cdnfs for all the objects that are supposed to be on the Content Engine. Missing objects should be detected and replicated. Symptom: Content Engine device deregistration fails when the Content Engine is assigned to a device group that is assigned to channels. Condition: A Content Engine deregistration may fail if the Content Engine is the last remaining Content Engine in a device group and there are more than five channels assigned to the device group at the moment that the Content Engine is deregistered.

Workaround: Manually remove the channel assignments from the device group so that the Content Engine can then be deregistered. Condition: This problem occurs if the user enters the cms enable global configuration command, and tries to enable or disable the Websense server before the cache process is completely operational.

The attempt to enable or disable the Websense server fails because of its dependency on the verifier that is running in the cache process. In this situation, subsequent commands to enable or disable the Websense server will also fail. Settings, however, are unchanged. Condition: This problem occurs if any logging priority value is set to "warning. Workaround: First go to the device group syslog setting window, and without making any changes in the displayed window, click the Submit button in the window.

Next, go to the Syslog Settings for Content Engine window for each affected Content Engine, and choose the desired device group. Condition: This problem occurs after you change the system. Symptom: When you click links from the table of contents or the index of the ACNS Content Distribution Manager online help, the links open in the same pane, that is, the left pane, which contains the table of contents and the index, instead of opening in the right pane, which contains the help topics.

Condition: This problem occurs after you install Microsoft security update MS Symptom: Websense Manager cannot connect to the local Websense server the Websense server runs as a separate process on the Content Engine instead of running on a separate system.

Condition: This problem occurs if an external IP address is used from Websense Manager to connect to the local Websense server Version 5. Symptom: A pre-positioned content object is lost after you configure a disk and reload the Content Engine. Condition: If the amount of cdnfs content approaches the amount of disk space allocated to the cdnfs, then cdnfs content is removed to ensure that the cdnfs file system can be resized properly to hold the saved content.

You specify the WCCP transparent proxy authentication information by using the acquirer proxy authentication transparent global configuration command. Content acquisition works correctly. You remove the proxy authentication through the no acquirer proxy authentication transparent command. Content acquisition stops working, which is expected. You restore proxy authentication using the basic-auth-disable option of the acquirer proxy authentication command.

Content acquisition should work, but it does not. Content acquisition results in a error message. Workaround: Restart the acquirer through the acquisition-distribution stop and acquisition-distribution start commands.

Workaround: If you do not want the rule to be applied for some of the rule actions, you can change the rule configuration as required. Symptom: An FTP client application stops receiving data for a data transfer operation such as a directory listing ls or file transfer GET. Workaround: Remove the Content Engine active mode configuration by issuing the following configuration command:.

When this symptom occurs on an FTP client application, press Ctrl-C simultaneously to stop the partial data transfer operation. While downgrading from ACNS 5. For example:. All other pattern lists are lost. Workaround: There is no known workaround. However, the cache process will restart and work normally after such a crash.

Symptom: When a rule with the redirect action is configured with a URL of 0 and with a matching pattern no replacing pattern , the cache process crashes if the request matches the pattern. Condition: This occurs when you configure a numeric value of 0 for the redirected URL for example, if www.

Symptom: When MPEG-2 is specified as the preferred format in a channel, programs cannot be created in that channel. Manually set the bandwidth while creating the program as follows:. Symptom: The manifest validator fails to fetch the XML file if the source is authenticated. Condition: This problem occurs only if the file is located at an authenticated location. Workaround: Put a copy of the manifest file in a non-authentication location to use the manifest validator. The resolved caveats are grouped into two categories:.

Even if you remove QuickTime and reinstall it, you are still prompted to download QuickTime. Following this full configuration, the output of the show disks configured EXEC command shows that there is a pending configuration, even though you did not change the disk configuration settings through the Content Distribution Manager GUI or CLI.

After you reboot the next time, the following message appears in the syslog, and the disks are reconfigured to the same size. When you attempt to edit the list of locations through the Content Distribution Manager GUI, a processing error for the request occurs. This problem can occur when there are a large number of locations and you try to edit the list of locations before the entire list is populated in the Content Distribution Manager GUI.

These files are the error logs of the cache process. This problem occurs when there are duplicate cache disk file system object entries for the same object. When a record is inserted into the hash table, there can be slower performance for a long list of duplicates because the entire list is searched. The above pattern is expected to match only if url-regex is yyy and the domain of the request is zzz.

However, the rule match is seen if either of them matches, meaning group-type "OR" is effected. This problem occurs when all of the following three conditions exist:. A request for a large pre-positioned file over HTTP results in packets that appear to be fragmented. This problem occurs if the IP fragmentation bit is not set but the packet seems to be fragmented for example, adding the total packet size of the larger packet to the data portion of the second packet equals 1, total bytes.

When you enter the URL to a software upgrade meta file in the Content Distribution Manager software upgrade registration window, and you include a space when specifying the meta file URL, you receive an error message such as the following:. A core file from the ICAP service is seen in the core directory. The ICAP service is immediately restarted by the system. This problem only occurs with some websites. The transaction log records the incorrect server name.

This problem can occur when certain requests are redirected to different servers because of the defined rules. Even if "no http object url-validation enable" is configured on the Content Engine, the statistics indicate DNS lookups for transparently redirected requests in ACNS 5. The Content Distribution Manager may not return to full service after a reboot. This problem occurs because the disk partition on the Content Distribution Manager is full because of a high rate of error messages from the Content Engines that are under its control.

Some specially encoded WMT content is not played back properly from a rebroadcast a multicast. On the receiver Content Engine, content replication stops. Requests for pre-positioned content that is larger than kilobytes return an error message that indicates the bandwidth has been exceeded.

If the client browser forces a refresh through the Content Engine cache, the Content Engine issues a request to the origin server that returns the requested content object to the Content Engine. The Content Engine returns the new object to the client but does not clear the previously cached "stale" object from its local cache. If the acquirer is stopped in the middle of a crawl, although the AcqCrawlNode is updated as "Done," some items are not be written to the database.

In these cases, dropped content is not acquired because the page is not recrawled after the acquirer is restarted. If you change the bitrate-in-bps or bitrate-in-kbps or bitrate-in-mbps attributes in the manifest file after content has been acquired, the new values are not used on the root Content Engine. In WMT transaction logs, sc-bytes is logged correctly the first time.

It is logged incorrectly for the subsequent control events. This could cause temporary service disruption when the ICAP service is enabled. The system file system sysfs partition fills up because RealSubscriber live archiving has created unusually large archive log. The output of the show content-routing route EXEC command on the Content Router shows an empty routing table even though there are active Content Engines and the Content Engines are correctly assigned to channels.

This condition can be triggered by an ICAP server, which is being rebooted or is going down and up. When you try to start up a WMT multicast station, it fails to start, and a usage error message is reported. If the specified default gateway is unreachable when you boot the Content Engine, the default gateway configuration on the Content Engine may be lost. In this case, you may have to reconfigure the default gateway configuration on the Content Engine in order for the Content Engine to be accessible on the network.

The default gateway may be unreachable from the Content Engine because the IP address is incorrect, the physical connectivity is down, or the interface is being shut down. The successful exploitation enables an adversary to reset any established TCP connection in a much shorter time than was previously discussed publicly.

Depending on the application, the connection may be automatically reestablished. In other cases, a user must repeat the action for example, open a new Telnet or SSH session. Depending upon which protocol is attacked, a successful attack may have additional consequences beyond terminated connection which must be considered.

This attack vector is only applicable to sessions that are terminating on a device such as a router, switch, or computer and not to sessions that are only passing through the device for example, transit traffic that is being routed by a router. In addition, this attack vector does not directly compromise data integrity or confidentiality. All Cisco products that contain a TCP stack are susceptible to this vulnerability.

A companion advisory that describes this vulnerability for products that do not run Cisco IOS software is available at:. After you enter the clear cache all command, the RealMedia cache is not cleared and a core file is generated. This problem occurs when the number of mediafs partitions exceeds 8.

ACNS users may experience problems retrieving compressed. This problem can occur when a CSS is being used for load balancing and it is sending traffic to a Content Engine. The root Content Engine does not start acquiring content when it is changed back to a root Content Engine from a receiver Content Engine.

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