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The four common Cisco IOS Software feature licenses for switching are: 1) LAN Lite 2) LAN Base 3) IP Base 4) IP Services LAN Lite is for Enterprise. The LAN Base feature set offers enhanced intelligent services that include comprehensive Layer 2 features, with up-to VLANs. The IP Base. LAN base is layer 2 only, basic VLANs, IP management, static routes · IP Base adds layer 3 routing, but limited routing protocols and routing table size. You get. NETWRIX VS MANAGEENGINE ASSETEXPLORER Сообщаю Для вас, что.

Why do we need network virtualization? We need to think about Server Virtualization first if we want to talk about Network Virtualization. In the era of cloud computing, servers During bootup of Cisco hardware through Cisco IOS software, error messages similar to below are displayed when you erase configuration and r Below logs are display in Event Logs too. The WSUS How to display and Export information about office users in office by using powershell?

As an office administrator, you would definitely need to display and export some user information such as distribution group list, all u Solving the "A general system error occured:Invalid fault" error in vSphere 4. Below error was come out when you try to migrate VM to other host for some reason. Below error was come out when you try to edit VM Designed By Snowmay. Figure 1. Feature Set Overview. In particular, Figure 2 shows the main differences between the three feature sets supported on the Cisco Catalyst 3K switch family.

Figure 2. Feature Set Characteristics and Differences. Universal Image. The level of Cisco IOS Software functionality available is determined by the combination of one or more licenses installed on the device. A specific license file stored in the flash memory of the switch can unlock a specific Cisco IOS Software feature set, from the smallest one to the largest one Figure 3. Figure 3. Feature Set Activation in a Universal Image. The reason for this alternate image type is that some countries have import regulations that require that the device does not support any strong data-plane crypto functionality, such as IEEE To satisfy the import requirements of those countries, this universal image does not support any strong payload encryption that is, it is of the nonpayload encryption type.

Software Activation Overview. This means that for each series of switches a common image is deployed. A software activation license SAL is also preinstalled on the device, which activates the specific functionality that the user procures. Each software activation license is unique to a specific device and functions only with that device. Serial number is an digit number that uniquely identifies a device. The product ID identifies the type of device.

This information is also present on a label found on the device. Cisco recommends recording this information when the switch is first received and storing it in a safe location. In case of issues, the TAC should be contacted for assistance. New devices are shipped with software activation licenses preinstalled for feature sets ordered with the switches.

A new license is needed only when adding new feature sets. For example, advancing a device from the IP Base feature set to the IP Services feature set requires a new software activation license. However, migrating software images from one release to another for example, from A new feature set can be enabled with a new SAL, which can be generated after the purchase of a so-called product activation key PAK.

So, when customers need to activate a different Cisco IOS Software feature set, they can purchase a product activation key for a desired feature set and obtain the UDI s for the device s to upgrade. The final result of the above process is a software activation license file, which is an XML text file with a. Figure 4.

Software Activation License File. After installing a license file in the flash memory of a switch for example, member of a stack , one can show it with the following command:. Store Index: 0. License: 11 ipservices 1. When a device is powered on, the software activation license file is examined by the Cisco IOS Software, which activates the appropriate feature sets.

Unlike previous right-to-use licenses, this flexible approach helps users simplify deployment of new switches and maintain an accurate record of the specific image, functionality, and additional features that are activated on each device by providing a definitive mechanism that helps ensure the correct software features are licensed on every device. PAKs are not tied to a specific device until they are used to generate a software activation license.

They do not have an expiration date and can be redeemed at any time after purchase. PAKs are ordered using part numbers on the Cisco price list see also the tables below , as there are different PAKs for different types of switches. A PAK can generate multiple licenses before it is fully redeemed similarly to a debit card.

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This makes it a good choice for large enterprises. Cisco LAN Base is one of the most robust licenses out there that is used for layer 2 access switches. IP Base is meant to be used by large enterprises, particularly those that are on the metro net or have more than one office. It provides excellent security to the network while enabling a genuine capacity for growth in size or scale. It provides support for layer 2 as well as layer 3 routing. Cisco LAN Base is a very strong license that is used for layer 2 access switches.

It is an upgrade to LAN Lite as it has more powerful access features. In some cases, the LAN base can also be efficient for supporting layer 3 dynamic packet routing. However, for that, added static routing support is essential. It helps in reducing unintended and disruptive changes. Meanwhile, Flex Link adds a couple of fast converging active and backup links across access and distribution switches.

This increases layer 2 resiliency to a large extent. LAN Base has several very strong security capabilities as well. Some of these include Radius Change of Authorization, Flexible Authentication, and even advanced You can also create backup paths by using Gigabit or EtherChannel links.

If one of the redundant connections fails, the other can serve as a backup path. If the Gigabit switch is cluster-capable, you can configure it and the switch stack as a switch cluster to manage them through a single IP address. Figure Cost-Effective Wiring Closet.

The first illustration is of an isolated high-performance workgroup, where the Catalyst X switches are connected to Catalyst X switches in the distribution layer. The second illustration is of a high-performance workgroup in the branch office, where the Catalyst X switches are connected to a router in the distribution layer.

Using SFP modules also provides flexibility in media and distance options through fiber-optic connections. Figure High-Performance Wiring Closet. Figure Redundant Gigabit Backbone. QoS and policing on the switches provide preferential treatment for certain data streams. They segment traffic streams into different paths for processing.

Security features on the switch ensure rapid handling of packets. Fault tolerance from the server racks to the core is achieved through dual homing of servers connected to dual switch stacks or the switches, which have redundant Gigabit EtherChannels and cross-stack EtherChannels.

Using dual SFP module uplinks from the switches provides redundant uplinks to the network core. Using SFP modules provides flexibility in media and distance options through fiber-optic connections. The various lengths of stack cable available, ranging from 0. Figure Server Aggregation. Figure Linux Server Cluster. Figure and Figure show a configuration for a network of up to employees. This network uses a Catalyst X-only Layer 3 switch stack or Catalyst X Layer 3 switches with high-speed connections to two routers.

For network reliability and load-balancing, this network has HSRP enabled on the routers and on the switches. This ensures connectivity to the Internet, WAN, and mission-critical network resources in case one of the routers or switches fails. The switches are using routed uplinks for faster failover. They are also configured with equal-cost routing for load sharing and redundancy. When the network uses Catalyst X switches, a Layer 2 switch stack can use cross-stack EtherChannel for load sharing.

The switches are connected to workstations, and local servers, and IEEE The server farm includes a call-processing server running Cisco CallManager software. The switches are interconnected through Gigabit interfaces. This network uses VLANs to logically segment the network into well-defined broadcast groups and for security management.

Data and multimedia traffic are configured on the same VLAN. In addition to inter-VLAN routing, the multilayer switches provide QoS mechanisms such as DSCP priorities to prioritize the different types of network traffic and to deliver high-priority traffic. If congestion occurs, QoS drops low-priority traffic to allow delivery of high-priority traffic. For prestandard and IEEE Each PoE switch port provides The powered device, such as a Cisco IP Phone, can receive redundant power when it is also connected to an AC power source.

Powered devices not connected to Catalyst PoE switches must be connected to AC power sources to receive power. Users with workstations running Cisco SoftPhone software can place, receive, and control calls from their PCs. Switches in the wiring closet have traditionally been only Layer 2 devices, but as network traffic profiles evolve, switches in the wiring closet are increasingly employing multilayer services such as multicast management and traffic classification.

Figure shows a configuration for a network that uses only Catalyst X switch stacks in the wiring closets and two backbone switches, such as the Catalyst switches, to aggregate up to ten wiring closets. Figure shows a configuration for a network that uses only Catalyst X switches in the wiring closets and two backbone switches, such as the Catalyst switches, to aggregate up to ten wiring closets.

In the wiring closet, each switch stack or switch has IGMP snooping enabled to efficiently forward multimedia and multicast traffic. QoS ACLs that either drop or mark nonconforming traffic based on bandwidth limits are also configured on each switch stack or switch.

QoS features can limit bandwidth on a per-port or per-user basis. The switch ports are configured as either trusted or untrusted. If you configure the port as untrusted, you can use an ACL to mark the frame in accordance with the network policy. Each switch stack or switch provides inter-VLAN routing. These switch stacks or switches also have redundant uplink connections to the backbone switches, with each uplink port configured as a trusted routed uplink to provide faster convergence in case of an uplink failure.

The routers and backbone switches have HSRP enabled for load-balancing and redundant connectivity to guarantee mission-critical traffic. A growing segment of residential and commercial customers are requiring high-speed access to Ethernet metropolitan-area networks MANs.

Figure shows a configuration for a Gigabit Ethernet MAN ring using multilayer switch stacks as aggregation switches in the mini-point-of-presence POP location. The resident switches can be Catalyst X switches, providing customers with high-speed connections to the MAN. The Catalyst LRE switch can also be used as a residential switch for customers requiring connectivity through existing phone lines.

The Catalyst LRE switch can then connect to another residential switch or to a Catalyst aggregation switch. The protected port feature provides security and isolation between ports on the switch, ensuring that subscribers cannot view packets destined for other subscribers.

ACLs on the uplink ports to the aggregating Catalyst multilayer switches provide security and bandwidth management. Figure shows a configuration for sending 8 Gigabits of data over a single fiber-optic cable. The higher the wavelength, the farther the transmission can travel. A common wavelength used for long-distance transmissions is nm. Before configuring the switch, review these sections for startup information:.

Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. Log in to Save Content. PDF - Complete Book Updated: September 11, Chapter: Overview. Software F eatures The switch supports an IP Base software image with or without payload encryption for customers without a service support contract.

IP Services feature set—Provides a richer set of enterprise-class intelligent services and full IPv6 support. For more information about Express Setup, see the getting started guide. User-defined and Cisco-default Smartports macros for creating custom switch configurations for simplified deployment across the network.

Auto Smartports Cisco-default and user-defined macros for dynamic port configuration based on the device type detected on the port. AutoSmartport enhancements, which add support for global macros, last-resort macros, event trigger control, access points, EtherChannels, auto-QoS with Cisco Medianet, and IP phones. The device classifier is enabled by default, and can classify devices based on DHCP options. For information about starting Device Manager, see the getting started guide.

For more information about Device Manager, see the switch online help. Cisco Network Assistant referred to as Network Assistant for — Managing communities, which are device groups like clusters, except that they can contain routers and access points and can be made more secure. Ci sco StackWise Plus technology on Catalyst X switches for — Connecting up to nine switches through their StackWise Plus ports that operate as a single switch or switch-router in the network.

When power-stack cables connect up to four switches, you can manage the individual switch power supplies as a single power supply for power sharing or redundancy for switches and connected devices. Switch c lustering technology for — Unified configuration, monitoring, authentication, and software upgrade of multiple, cluster-capable switches, regardless of their geographic proximity and interconnection media, including Ethernet, Fast Ethernet, Fast EtherChannel, small form-factor pluggable SFP modules, Gigabit Ethernet, Gigabit EtherChannel, Gigabit Ethernet, and Gigabit EtherChannel connections.

Smart Install to allow a single point of management director in a network. You can use Smart Install to provide zero touch image and configuration upgrade of newly deployed switches and image and configuration downloads for any client switches. Call Home to provide e-mail-based and web-based notification of critical system events. P erformance Features Cisco EnergyWise manages the energy usage of endpoints connected to domain members.

Cisco EnergyWise Phase 2. Autosensing of port speed and autonegotiation of duplex mode on all switch ports for optimizing bandwidth. Support for the maximum packet size or maximum transmission unit MTU size for these types of frames: — Up to bytes for routed frames. IEEE Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate. Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate across the switches in the stack.

Per-port s torm control for preventing broadcast, multicast, and unicast storms. Port b locking on forwarding unknown Layer 2 unknown unicast, multicast, and bridged broadcast traffic. Protocol storm protection to control the rate of incoming protocol traffic to a switch by dropping packets that exceed a specified ingress rate.

I GMP filtering for controlling the set of multicast groups to which hosts on a switch port can belong. IGMP leave timer for configuring the leave latency for the network. Switch Database Management SDM templates for allocating system resources to maximize support for user-selected features.

Web Cache Communication Protocol WCCP for redirecting traffic to wide-area application engines, for enabling content requests to be fulfilled locally, and for localizing web-traffic patterns in the network requires the IP Services feature set. Previously only permit entries were supported. Configurable small-frame arrival threshold to prevent storm control when small frames 64 bytes or less arrive on an interface at a specified rate the threshold.

Support for IEEE RADIUS server load balancing to allow access and authentication requests to be distributed evenly across a server group. Memory consistency check routine enhancements to detect and correct invalid ternary content addressable memory TCAM table entries that can affect switch performance.

You use it to configure and to monitor a single switch. Network Assistant—Network Assistant is a network management application that can be downloaded from Cisco. You use it to manage a single switch, a cluster of switches, or a community of devices. You can access the CLI by connecting your management station directly to the switch console port, by connecting your PC directly to the Ethernet management port, or by using Telnet from a remote management station or PC.

You can manage the switch stack by connecting to the console port or Ethernet management port of any stack member. You can automate initial configurations and configuration updates by generating switch-specific configuration changes, sending them to the switch, executing the configuration change, and logging the results. CNS embedded agents for automating switch management, configuration storage, and delivery.

DHCPv6 relay source configuration for configuring the source address for messages from the relay agent. Cisco Discovery Protocol CDP Versions 1 and 2 for network topology discovery and mapping between the switch and other Cisco devices on the network. CDP and LLDP enhancements for exchanging location information with video end points for dynamic location-based content distribution from servers.

Configuration logging to log and to view changes to the switch configuration. Configuration replacement and rollback to replace the running configuration on a switch with any saved Cisco IOS configuration file.

Unique device identifier to provide product identification information through a show inventory user EXEC command display. In-band management access through the device manager over a Netscape Navigator or Microsoft Internet Explorer browser session. I n-band management access for up to 16 simultaneous Telnet connections for multiple CLI-based sessions over the network.

O ut-of-band management access through the switch console port to a directly attached terminal or to a remote terminal through a serial connection or a modem. O ut-of-band management access through the Ethernet management port to a PC. Secure Copy Protocol SCP feature to provide a secure and authenticated method for copying switch configuration or switch image files.

DHCP-based autoconfiguration and image update to download a specified configuration a new image to a large number of switches. Source Specific Multicast SSM mapping for multicast applications to provide a mapping of source to allowing IGMPv2 clients to utilize SSM, allowing listeners to connect to multicast sources dynamically and reducing dependencies on the application.

IPv6 supports stateless autoconfiguration to manage link, subnet, and site addressing changes, such as management of host and mobile IP addresses. Local web authentication banner so that custom banner or image file can be displayed at a web authentication login screen. This provides identical configuration files to be sent by using the DHCP protocol. Console input is active on only one port at a time.

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Meanwhile, Flex Link adds a couple of fast converging active and backup links across access and distribution switches. This increases layer 2 resiliency to a large extent. LAN Base has several very strong security capabilities as well. Some of these include Radius Change of Authorization, Flexible Authentication, and even advanced Cisco LAN Base is a good choice for small to medium-scale businesses.

It works best for companies that have a single office with a single network. IT has additional features and enables better quality of service. Its biggest advantage is that it supports layer 2 static routing but also has fully featured arrangements for layer 3 dynamic packet routing.

This makes it the perfect choice for large enterprises. Companies that have more than one office with multiple networks can use this for vigorous overall network security. Some of the functions that are included in IP Base are advanced quality of service QoS , access control lists, rate limiting, and much more.

However, a downside of using this is that it does not include a score of features that IP service has. Moreover, complete access to QoS is also provided to the administrator or user. Both of them are software licensed developed by the company, Cisco. A growing segment of residential and commercial customers are requiring high-speed access to Ethernet metropolitan-area networks MANs.

Figure shows a configuration for a Gigabit Ethernet MAN ring using multilayer switch stacks as aggregation switches in the mini-point-of-presence POP location. The resident switches can be Catalyst X switches, providing customers with high-speed connections to the MAN. The Catalyst LRE switch can also be used as a residential switch for customers requiring connectivity through existing phone lines.

The Catalyst LRE switch can then connect to another residential switch or to a Catalyst aggregation switch. The protected port feature provides security and isolation between ports on the switch, ensuring that subscribers cannot view packets destined for other subscribers. ACLs on the uplink ports to the aggregating Catalyst multilayer switches provide security and bandwidth management. Figure shows a configuration for sending 8 Gigabits of data over a single fiber-optic cable.

The higher the wavelength, the farther the transmission can travel. A common wavelength used for long-distance transmissions is nm. Before configuring the switch, review these sections for startup information:. Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. Log in to Save Content. PDF - Complete Book Updated: September 11, Chapter: Overview.

Software F eatures The switch supports an IP Base software image with or without payload encryption for customers without a service support contract. IP Services feature set—Provides a richer set of enterprise-class intelligent services and full IPv6 support. For more information about Express Setup, see the getting started guide.

User-defined and Cisco-default Smartports macros for creating custom switch configurations for simplified deployment across the network. Auto Smartports Cisco-default and user-defined macros for dynamic port configuration based on the device type detected on the port. AutoSmartport enhancements, which add support for global macros, last-resort macros, event trigger control, access points, EtherChannels, auto-QoS with Cisco Medianet, and IP phones.

The device classifier is enabled by default, and can classify devices based on DHCP options. For information about starting Device Manager, see the getting started guide. For more information about Device Manager, see the switch online help. Cisco Network Assistant referred to as Network Assistant for — Managing communities, which are device groups like clusters, except that they can contain routers and access points and can be made more secure.

Ci sco StackWise Plus technology on Catalyst X switches for — Connecting up to nine switches through their StackWise Plus ports that operate as a single switch or switch-router in the network. When power-stack cables connect up to four switches, you can manage the individual switch power supplies as a single power supply for power sharing or redundancy for switches and connected devices.

Switch c lustering technology for — Unified configuration, monitoring, authentication, and software upgrade of multiple, cluster-capable switches, regardless of their geographic proximity and interconnection media, including Ethernet, Fast Ethernet, Fast EtherChannel, small form-factor pluggable SFP modules, Gigabit Ethernet, Gigabit EtherChannel, Gigabit Ethernet, and Gigabit EtherChannel connections.

Smart Install to allow a single point of management director in a network. You can use Smart Install to provide zero touch image and configuration upgrade of newly deployed switches and image and configuration downloads for any client switches. Call Home to provide e-mail-based and web-based notification of critical system events. P erformance Features Cisco EnergyWise manages the energy usage of endpoints connected to domain members.

Cisco EnergyWise Phase 2. Autosensing of port speed and autonegotiation of duplex mode on all switch ports for optimizing bandwidth. Support for the maximum packet size or maximum transmission unit MTU size for these types of frames: — Up to bytes for routed frames. IEEE Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate.

Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate across the switches in the stack. Per-port s torm control for preventing broadcast, multicast, and unicast storms. Port b locking on forwarding unknown Layer 2 unknown unicast, multicast, and bridged broadcast traffic. Protocol storm protection to control the rate of incoming protocol traffic to a switch by dropping packets that exceed a specified ingress rate.

I GMP filtering for controlling the set of multicast groups to which hosts on a switch port can belong. IGMP leave timer for configuring the leave latency for the network. Switch Database Management SDM templates for allocating system resources to maximize support for user-selected features.

Web Cache Communication Protocol WCCP for redirecting traffic to wide-area application engines, for enabling content requests to be fulfilled locally, and for localizing web-traffic patterns in the network requires the IP Services feature set. Previously only permit entries were supported. Configurable small-frame arrival threshold to prevent storm control when small frames 64 bytes or less arrive on an interface at a specified rate the threshold.

Support for IEEE RADIUS server load balancing to allow access and authentication requests to be distributed evenly across a server group. Memory consistency check routine enhancements to detect and correct invalid ternary content addressable memory TCAM table entries that can affect switch performance. You use it to configure and to monitor a single switch. Network Assistant—Network Assistant is a network management application that can be downloaded from Cisco. You use it to manage a single switch, a cluster of switches, or a community of devices.

You can access the CLI by connecting your management station directly to the switch console port, by connecting your PC directly to the Ethernet management port, or by using Telnet from a remote management station or PC. You can manage the switch stack by connecting to the console port or Ethernet management port of any stack member.

You can automate initial configurations and configuration updates by generating switch-specific configuration changes, sending them to the switch, executing the configuration change, and logging the results. CNS embedded agents for automating switch management, configuration storage, and delivery. DHCPv6 relay source configuration for configuring the source address for messages from the relay agent. Cisco Discovery Protocol CDP Versions 1 and 2 for network topology discovery and mapping between the switch and other Cisco devices on the network.

CDP and LLDP enhancements for exchanging location information with video end points for dynamic location-based content distribution from servers. Configuration logging to log and to view changes to the switch configuration. Configuration replacement and rollback to replace the running configuration on a switch with any saved Cisco IOS configuration file.

Unique device identifier to provide product identification information through a show inventory user EXEC command display. In-band management access through the device manager over a Netscape Navigator or Microsoft Internet Explorer browser session. I n-band management access for up to 16 simultaneous Telnet connections for multiple CLI-based sessions over the network.

O ut-of-band management access through the switch console port to a directly attached terminal or to a remote terminal through a serial connection or a modem. O ut-of-band management access through the Ethernet management port to a PC. Secure Copy Protocol SCP feature to provide a secure and authenticated method for copying switch configuration or switch image files.

DHCP-based autoconfiguration and image update to download a specified configuration a new image to a large number of switches. Source Specific Multicast SSM mapping for multicast applications to provide a mapping of source to allowing IGMPv2 clients to utilize SSM, allowing listeners to connect to multicast sources dynamically and reducing dependencies on the application. IPv6 supports stateless autoconfiguration to manage link, subnet, and site addressing changes, such as management of host and mobile IP addresses.

Local web authentication banner so that custom banner or image file can be displayed at a web authentication login screen. This provides identical configuration files to be sent by using the DHCP protocol. Console input is active on only one port at a time. You can use standard Cisco CLI commands to read, write, erase, copy, or boot from the flash memory.

A vailability and Redundancy Features HSRP for command switch and Layer 3 router redundancy Automatic stack master re-election f ailover support for replacing stack masters that become unavailable only on Catalyst X switches The newly elected stack master begins accepting Layer 2 traffic in less than 1 second and Layer 3 traffic between 3 to 5 seconds. You can configure power supplies in a stack in redundant mode so that an unused power supply will turn on if a power supply in the stack fails.

With this feature enabled, no user traffic is sent or received on the trunk. The switch CPU continues to send and receive control protocol frames. A pair of interfaces configured as primary and backup links can load balance traffic based on VLAN. Cisco IOS Release K erberos security system to authenticate requests for network resources by using a trusted third party Secure Socket Layer SSL Version 3.

Smart logging to capture and export packet flows to a NetFlow collector. Protocol-Independent Multicast PIM for multicast routing within the network, allowing for devices in the network to receive the multicast feed requested and for switches not participating in the multicast to be pruned.

IPv6 unicast routing capability for forwarding IPv6 traffic through configured interfaces requires the IP Services feature set. IPv6 default router preference DRP for improving the ability of a host to select an appropriate router. Nonstop forwarding NSF awareness to enable the Layer 3 switch to continue forwarding packets from an NSF-capable neighboring router when the primary route processor RP is failing and the backup RP is taking over, or when the primary RP is manually reloaded for a nondisruptive software upgrade requires the IP Services feature set.

Support for CDP with power consumption. The powered device notifies the switch of the amount of power it is consuming. Support for Cisco intelligent power management. The powered device and the switch negotiate through power-negotiation CDP messages for an agreed power-consumption level. The negotiation allows a high-power Cisco powered device to operate at its highest power mode. Automatic detection and power budgeting; the switch maintains a power budget, monitors and tracks requests for power, and grants power only when it is available.

Ability to monitor the real-time power consumption. On a per-PoE port basis, the switch senses the total power consumption, polices the power usage, and reports the power usage. Four groups history, statistics, alarms, and events of embedded R MON agents for network monitoring and traffic analysis. Syslog facility for logging system messages about authentication or authorization errors, resource issues, and timeout events.

Layer 2 traceroute to identify the physical path that a packet takes from a source device to a destination device. SFP module diagnostic management interface to monitor physical or operational status of an SFP module. Online diagnostics to test the hardware functionality of the supervisor engine, modules, and switch while the switch is connected to a live network.

On-board failure logging OBFL to collect information about the switch and the power supplies connected to it. Embedded event manager EEM for device and system management to monitor key system events and then act on them though a policy. Support for EEM 3. You can use the simulator tool: — For network assessment before deploying applications that have stringent network performance requirements. Cisco Mediatrace and performance monitor — Cisco Mediatrace to troubleshoot and isolate network or application issues in traffic streams.

Default Settings After I nitial Switch Configuration The switch is designed for plug-and-play operation, requiring only that you assign basic IP information to the switch and connect it to the other devices in your network. If you do not configure the switch at all, the switch operates with these default settings: Default switch IP address, subnet mask, and default gateway is 0. No passwords are defined. The DHCP snooping information option is enabled.

No IGMP filters are applied. Table Increasing Ne twork Performance Network Demands Suggested Design Methods Too many users on a single network segment and a growing number of users accessing the Internet Create smaller network segments so that fewer users share the bandwidth, and use VLANs and IP subnets to place the network resources in the same logical network as the users who access those resources most. Use full-duplex operation between the switch and its connected workstations.

Increased power of new PCs, workstations, and servers High bandwidth demand from networked applications such as e-mail with large attached files and from bandwidth-intensive applications such as multimedia Connect global resources—such as servers and routers to which the network users require equal access—directly to the high-speed switch ports so that they have their own high-speed segment.

Use the EtherChannel feature between the switch and its connected servers and routers. Table Providing Network Services Network Demands Suggested Design Methods Efficient bandwidth usage for multimedia applications and guaranteed bandwidth for critical applications Use IGMP snooping to efficiently forward multimedia and multicast traffic.

Use other QoS mechanisms such as packet classification, marking, scheduling, and congestion avoidance to classify traffic with the appropriate priority level, thereby providing maximum flexibility and support for mission-critical, unicast, and multicast, and multimedia applications. Use optional IP multicast routing to design networks better suited for multicast traffic. High demand on network redundancy and availability to provide always on mission-critical applications Use switch stacks, where all stack members are eligible active switches in case of active switch failure.

All stack members have synchronized copies of the saved and running configuration files of the switch stack. Use cross-stack EtherChannels for providing redundant links across the switch stack. An evolving demand for IP telephony Use QoS to prioritize applications such as IP telephony during congestion and to help control both delay and jitter within the network.

Use switches that support at least two queues per port to prioritize voice and data traffic as either high- or low-priority, based on IEEE

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