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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 master and backup routing engines in a Virtual Chassis has occurred.

Action

On the master 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)

Connect to the backup Routing Engine:
{master:0} user@switch> request session member 1
```
{backup:1}
user@switch>
```
Verify that the backup Routing Engine is ready for switchover on member ID 1:
{backup:1} user@switch> show system switchover
```
Graceful switchover: On
Configuration database: Ready
Kernel database: Ready
Peer state: Steady State
```
Switch the current backup Routing Engine to master Routing Engine:
Note: You must wait a minimum of two minutes between Routing Engine failovers for the Routing Engines to synchronize.
{backup:1} user@switch> request chassis routing-engine master acquire

Verify that the master and backup Routing Engines have switched roles:

Note: Member ID 1 is now the master and member ID 0 is now the backup.

{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 master and the master Routing Engine became the backup.