Cisco Systems NME-16ES-1G manual Cluster Compatibility, Command Device Characteristics

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Cisco EtherSwitch Service Modules Feature Guide

Information About the Cisco EtherSwitch Service Modules

•Other Considerations for Cluster Standby Groups, page 28

•Automatic Recovery of Cluster Configuration, page 29

•IP Addresses in Clusters, page 30

•Hostnames in Clusters, page 30

•Passwords in Clusters, page 31

•SNMP Community Strings in Clusters, page 31

•Switch Clusters and Switch Stacks, page 31

•TACACS+ and RADIUS in Clusters, page 33

•Availability of Switch-Specific Features in Switch Clusters, page 33

Cluster Compatibility

When creating a device cluster or adding a devices to a cluster, follow these guidelines:

•When you create a device cluster, we recommend configuring the highest-end device in your cluster as the cluster command switch.

•If you are managing the cluster through Network Assistant, the device that has the latest software should be the cluster command switch.

•The standby cluster command switch must be the same type as the command device. For example, if the command device is a Cisco EtherSwitch service module, all standby command devices must be either Cisco EtherSwitch service modules or Catalyst 3750 switches.

Command Device Characteristics

A command device must meet these requirements:

•It has an IP address.

•Clustering and the HTTP server are enabled (the default).

•CDP version 2 is enabled (the default).

•It is not a command device or a member in another cluster.

•It is connected to standby command devices through the management VLAN and to cluster members through a common VLAN.

Standby Command Device Characteristics

A standby command device must meet these requirements:

•It has an IP address.

•It has CDP version 2 enabled.

•It is connected to the command device and to other standby command devices through its management VLAN.

•It is connected to all other cluster members through a common VLAN.

•It is redundantly connected to the cluster so that connectivity to members is maintained.

•It is not a command device or a member in another cluster.

Cisco IOS Release 12.2(25)SEC

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Contents Release Modification GuideContents Hardware Overview Network Modules Hardware Installation GuideSoftware Features and Benefits Performance Features Ease-of-Use and Ease-of-Deployment FeaturesManagement Options Availability Features Manageability FeaturesVlan Features Security Features QoS and CoS Features Monitoring Features Power-over-Ethernet FeaturesCisco StackWise Concepts Overview of Switch StacksSwitch Stack Membership Stack Master Election and Re-Election Stack Member Numbers Switch Stack Bridge ID and Router MAC AddressStack Member Priority Values Stack Protocol Version Compatibility Switch Stack Software Compatibility RecommendationsSwitch Stack Configuration Files Switch Stack Management Connectivity Accessing the CLI of a Specific Stack Member Clustering ConceptsManagement Connectivity to Specific Stack Members Command Device Characteristics Standby Command Device CharacteristicsCluster Compatibility Candidate and Member Characteristics Automatic Discovery of Candidates and MembersDiscovery of Candidates and Members Through CDP Hops Vlan Discovery of Candidates and Members Through Different VLANs Discovery of Candidates and Members Through Routed Ports SwitchNew out-of-box Discovery of Newly Installed Switches in ClustersHsrp and Standby Cluster Command Switches Other Considerations for Cluster Standby Groups Virtual IP Addresses in ClustersAutomatic Recovery of Cluster Configuration Hostnames in Clusters IP Addresses in ClustersSwitch Clusters and Switch Stacks Passwords in ClustersSwitch Stack Switch Cluster Snmp Community Strings in ClustersSwitch Stack Switch Cluster TACACS+ and Radius in Clusters Availability of Switch-Specific Features in Switch ClustersCisco IOS Release 12.225SEC Using Interface Configuration Mode Boot flash image-name Command or Action PurposeExample Dir flashShow running configuration EnableConfigure terminal Service-module interface slot/port sessionOutput of the show service-module status command Show power inlineShow ip interface brief Control+shift+6Sample Output for the boot flash Command on the Router Sample Output for the dir flash Command on the RouterRouter boot flashc2800-adventerprisek9-mz ExamplesRouter# configure terminal Router# show running config interface gigabitethernet2/0Router# service-module gigabitethernet2/0 session Switch dir flashSwitch# ctrl+shift+6 Switch# show ip interface briefSwitch# show power inline Sample Output for Pressing Ctrl+Shift+6 Followed byDhcp Feature Default SettingSTP Prerequisites Clustering Concepts section on Return Sample Output for Assigning the IP Address and Subnet Mask Sample Output for Entering an Interface NameCommand or Action Purpose Sample Output for Saving the Configuration to NvramRouter# service-module gigabitethernet1/0 shutdown Router# service-module gigabitethernet1/0 resetRouter# service-module gigabitethernet1/0 reload Cisco IOS Release 12.225SEC Restrictions Default Switch Stack ConfigurationAssigning a Stack Member Number Sample Output for the reload slot Command Sample Output for the switch renumber CommandShow switch Switchconfig# switch 6 renumberSample Output for the show switch Command Setting the Stack Member Priority ValueSample Output for the switch priority Command Verifying Information About the Switch StackSwitchconfig# switch 2 priority Switch show switchSwitch# show platform stack-manager all Show switch stack-ports Switchconfig# show switch neighborsUsing the CLI to Manage Switch Clusters RcommandShow version Sample Output for the show cluster members Command Sample Output for the rcommand and show version CommandsChoose View Refresh Choose Cluster Add to Cluster or Cluster member PasswordDetailed Steps from the CLI Creating a Cluster Standby GroupRouting-redundancy Cluster standby-group HSRP-group-nameNo switchport Sample Output for the ping tftpserver Command Sample Output for the copy tftp flash Command Sample Output for the show flash CommandSwitch# show flash Switch# copy tftp flashService-module interface slot/port password-reset Flashinit Recovering from a Corrupted Software Image Using XmodemPassword-reset Service-module interface slot/portFlashinit Control+6Troubleshooting Sample Output for the copy flash xmodem CommandRouter# copy flash xmodem Router# copy tftp xmodem Sample Output for the copy tftp xmodem CommandRouter# service-module gigabitethernet2/0 password-reset Router# service-module gigabitethernet1/0 sessionRecovering from a Lost or Forgotten Password Optional loadhelper filesystem/file-url Enable secret password Boot -x -v deviceimagenameRename Copy flashReload Copy running-configuration startup-configurationOptional set Boot Service-module password-reset commandSample Output for the set Command ExampleSet Scenario Action Result Current-stack-member-number Renumber new-stack-member-number Network Configuration Examples Network Demands Suggested Design Methods Cost-Effective Wiring Closet Redundant Gigabit Backbone Cisco SoftPhone Software 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