Verifying That Graceful Routing Engine Switchover Is Working in the Virtual Chassis

Purpose

Verify that a Graceful Routing Engine switchover (GRES) between two member switches acting as the primary and backup routing engines in a Virtual Chassis has occurred.

Action

On the primary switch, verify the member ID of the backup Routing Engine:

{master:0} 
user@switch> show virtual-chassis
Virtual Chassis ID: 5efa.4b7a.aae6
                                          Mastership            Neighbor List  
Member ID  Status   Serial No    Model    priority    Role      ID  Interface
0 (FPC 0)  Prsnt    BM0208105281 ex4200-24t      255  Master*    1  vcp-0      
1 (FPC 1)  Prsnt    BP0208192350 ex4200-48t      255  Backup     0  vcp-0 

Member ID for next new member: 2 (FPC 2)

1. Connect to the backup Routing Engine:

   content_copy zoom_out_map

   {master:0}
   user@switch> request session member 1
   
   {backup:1}
   user@switch>
   
   

2. Verify that the backup Routing Engine is ready for switchover on member ID 1:

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   {backup:1}
   user@switch> show system switchover
   
   Graceful switchover: On
   Configuration database: Ready
   Kernel database: Ready
   Peer state: Steady State
   
   

3. Switch the current backup Routing Engine to primary Routing Engine:

   Note:

   You must wait a minimum of two minutes between Routing Engine failovers for the Routing Engines to synchronize.

   content_copy zoom_out_map

   {backup:1}
   user@switch> request chassis routing-engine master acquire

4. Verify that the primary and backup Routing Engines have switched roles:

   Note:

   Member ID 1 is now the primary and member ID 0 is now the backup.

   content_copy zoom_out_map

   {master:1}
   user@switch> show virtual-chassis
   
   Virtual Chassis ID: 5efa.4b7a.aae6
                                             Mastership            Neighbor List  
   Member ID  Status   Serial No    Model    priority    Role      ID  Interface
   0 (FPC 0)  Prsnt    BM0208105281 ex4200-24t      255  Backup     1  vcp-0      
   1 (FPC 1)  Prsnt    BP0208192350 ex4200-48t      255  Master*    0  vcp-0      
   
   Member ID for next new member: 2 (FPC 2)
   
   

Meaning

With graceful Routing Engine switchover enabled, when you initiated a switchover from the backup Routing Engine, the backup Routing Engine became the primary and the primary Routing Engine became the backup.