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Cisco Systems NME-16ES-1G Discovery of Newly Installed Switches in Clusters

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Cisco EtherSwitch Service Modules Feature Guide

Information About the Cisco EtherSwitch Service Modules

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Cisco IOS Release 12.2(25)SEC

Figure 5 Discovery Through Routed Ports

Discovery of Newly Installed Switches in Clusters

To join a cluster, the new, out-of-the-box switch must be connected to the cluster through one of its

access ports. An access port (AP) carries the traffic of and belongs to only one VLAN. By default, the

new switch and its access ports are assigned to VLAN 1.

When the new switch joins a cluster, its default VLAN changes to the VLAN of the immediately

upstream neighbor. The new switch also configures its access port to belong to the VLAN of the

immediately upstream neighbor.

The cluster command switch in Figure 6 belongs to VLANs 9 and 16. When new cluster-capable

switches join the cluster, the following things happen:

•One cluster-capable switch and its access port are assigned to VLAN9.

•The other cluster-capable switch and its access port are assigned to management VLAN 16.

Figure 6 Discovery of Newly Installed Switches

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RP

RP

VLAN 62

VLAN

9

VLAN 62

VLAN 9

VLAN 4

VLAN 9

Command device

(management

VLAN 62)

Member

device 7

Command device

New (out-of-box)

candidate device

AP

Device A Device B

VLAN 9

VLAN 9

VLAN 16

VLAN 16

New (out-of-box)

candidate device

AP

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Contents

Main Cisco EtherSwitch Service Modules Feature Guide Contents Prerequisites for the Cisco EtherSwitch Service Modules Information About the Cisco EtherSwitch Service Modules Hardware Overview Software Features and Benefits Ease-of-Use and Ease-of-Deployment Features Performance Features Management Options Manageability Features Availability Features VLAN Features Security Features QoS and CoS Features Power-over-Ethernet Features Monitoring Features Cisco StackWise Concepts Overview of Switch Stacks Switch Stack Membership Stack Master Election and Re-Election Switch Stack Bridge ID and Router MAC Address Stack Member Numbers Stack Member Priority Values Switch Stack Software Compatibility Recommendations Stack Protocol Version Compatibility Major Incompatibility Between Cisco EtherSwitch Service Modules Minor Incompatibility Between Cisco EtherSwitch Service Modules Switch Stack Configuration Files Switch Stack Management Connectivity Management Connectivity to the Switch Stack Through an IP Address Management Connectivity to the Switch Stack Through an SSH Session Management Connectivity to the Switch Stack Through Console Ports Management Connectivity to Specific Stack Members Clustering Concepts Cluster Compatibility Command Device Characteristics Standby Command Device Characteristics Candidate and Member Characteristics Automatic Discovery of Candidates and Members Discovery of Candidates and Members Through CDP Hops Discovery of Candidates and Members Through Non-CDP-Capable and Noncluster-Capable Devices Discovery of Candidates and Members Through Different VLANs Discovery of Candidates and Members Through Different Management VLANs switch 7 Discovery of Candidates and Members Through Routed Ports Discovery of Newly Installed Switches in Clusters HSRP and Standby Cluster Command Switches Virtual IP Addresses in Clusters Other Considerations for Cluster Standby Groups Automatic Recovery of Cluster Configuration IP Addresses in Clusters Hostnames in Clusters Passwords in Clusters SNMP Community Strings in Clusters Switch Clusters and Switch Stacks Page TACACS+ and RADIUS in Clusters Availability of Switch-Specific Features in Switch Clusters How to Configure the Cisco EtherSwitch Service Module Accessing the CLI Through a Console Connection or Through Telnet Understanding Interface Types on the Cisco EtherSwitch Service Modules Using Interface Configuration Mode Configuring the Cisco EtherSwitch Service Module in the Router Page Page Page Sample Output for the show running config Command on the Router The following example shows what appears when you enter the show running config command: Sample Output for Configuring the Cisco EtherSwitch Service Module Interface on the Router Sample Output for the service-module Command on the Cisco EtherSwitch Service Module The following example shows what appears when you enter the service module command: Sample Output for the dir flash: Command on the Cisco EtherSwitch Service Module The following example shows what appears when you enter the show ip interface brief command: Sample Output for Pressing <Ctrl+Shift+6> Followed by x The following example shows what appears when you press <Ctrl+Shift+6> and then press x: Sample Output for the show power inline Command on the Router Sample Output for the show power inline Command on the Cisco EtherSwitch service module Default Settings After Initial Cisco EtherSwitch Service Module Configuration Page Configuring the Cisco EtherSwitch Service Module Using the Switch Setup Program Page Page Sample Output for Entering an Interface Name The following example shows what appears when you enter an interface name: Sample Output for Assigning the IP Address and Subnet Mask Sample Output for Configuring the Cisco EtherSwitch Service Module as a Standalone Service Module Shutting Down, Resetting, and Reloading the Cisco EtherSwitch Service Module Page How to Configure the Cisco EtherSwitch Service Module in a Switch Stack Default Switch Stack Configuration Assigning a Stack Member Number Page Setting the Stack Member Priority Value Verifying Information About the Switch Stack Step 1 Use the show platform stack-manager command to display platform-dependent switch-stack neighbors of a switch stack: stack. Use the show switch neighbors user EXEC command to display detailed information about the How to Configure a Switch Cluster Using the CLI to Manage Switch Clusters Page Adding Cluster Members to the Cisco EtherSwitch Service Module DETAILED STEPS FROM THE NETWORK ASSISTANT APPLICATION DETAILED STEPS FROM THE CLI Creating a Cluster Standby Group Upgrading the Cisco EtherSwitch Service Module Software Page Page Troubleshooting the Cisco EtherSwitch Service Module Software Recovering from a Corrupted Software Image Using Xmodem Page Troubleshooting Examples Page You are prompted for the max retry count. Accept the default: You are prompted to confirm the transfer to the Cisco EtherSwitch service module: The following appears when the image is downloaded to the service module: Sample Output for the service-module session Command on the Cisco EtherSwitch Service Module The following example shows what appears when you enter the service-module session command: Recovering from a Lost or Forgotten Password Page Page Page Recovering from a Lost or Forgotten Password When Password Recovery Is Disabled Page Example Switch Stack Configuration Scenarios Page Page Network Configuration Examples Network Design Concepts for Using the Cisco EtherSwitch Service Module Page Page Page Multidwelling Network Using the Cisco EtherSwitch Service Modules Page Additional References Related Documents Technical Assistance