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Verifying the Member ID, Role, and Neighbor Member Connections of a Virtual Chassis Member

Purpose

You can designate the role that a member performs within a virtual chassis or you can allow the role to be assigned by default. You can designate the member ID that is assigned to a specific switch by creating a permanent association between the switch’s serial number and a member ID, using a preprovisioned configuration. Or you can let the member ID be assigned by the master, based on the sequence in which the member switch is powered on and on which member IDs are currently available.

The role and member ID of the member switch are displayed on the front-panel LCD.

Each member switch can be cabled to one or two other member switches, using either the dedicated virtual chassis ports (VCPs) on the rear panel or an uplink port that has been set as a VCP. The members that are cabled together are considered neighbor members.

Action

To display the role and member ID assignments using the CLI, use the show virtual-chassis status command:


user@SWA-0> show virtual-chassis status 
 		
Virtual Chassis ID: 0000.e255.00e0

                                       Mastership             Neighbor List  
Member ID  Status  Serial No   Model     Priority  Role       ID, Interface

0 (FPC 0)  Prsnt   abc123      ex4200-48p    255  Master*     1 vcp-0
                                                              2 vcp-1

1 (FPC 1)  Prsnt   def456      ex4200-24t    255  Backup      2 vcp-0
                                                              0 vcp-1

2 (FPC 2)  Prsnt   abd231      ex4200-24p    128  Linecard    0 vcp-0
                                                              1 vcp-1

What it Means

This output verifies that three EX 4200 switches have been interconnected as a virtual chassis using their dedicated VCPs . The display shows which of the VCPs is connected to which neighbor. The first port (vcp-0) of member 0 is connected to member 1 and the second port of member 0 (vcp-1) is connected to member 2. The FPC slots for EX-series switches are the same as the member IDs.

The Mastership Priority values indicate that the master and backup members have been explicitly configured, because they are not using the default value (128).