Description

Sometimes after rebooting the entire EX4300-VC system or just a few member switches, three routing engines are shown by the command "show chassis hardware" and "show chassis routing-engine". Output from the command "show virtual-chassis" displays two routing engines properly. 

The issue was caused by commands using not refreshed 'other_re' values. Fix was applied to check the 'other_re' values to display the correct output. 

The issue is confirmed as a cosmetic issue and has no service impact.

Symptoms

Sometimes after rebooting the entire EX4300-VC system or just a few member switches, three routing engines are shown by the command "show chassis hardware" and "show chassis routing-engine". Output from the command "show virtual-chassis" displays two routing engines properly. 
 

root@EX4300-VC> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                PE1111111111      Virtual Chassis
Routing Engine 0 REV 22   650-044936   PG2222222222      EX4300-24T
Routing Engine 2 REV 32   650-044931   PE1111111111      EX4300-48T
Routing Engine 3 REV 32   650-044935   PF3333333333      EX4300-24P
FPC 0            REV 22   650-044936   PG2222222222      EX4300-24T
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0          REV 22   BUILTIN      BUILTIN           24x 10/100/1000 Base-T
  PIC 1          REV 22   BUILTIN      BUILTIN           4x 40GE QSFP+
---snip---
root@EX4300-VC> show chassis routing-engine | match state 
    Current state                  Backup
    Current state                  Master
    Current state                  Master

root@EX4300-VC> show virtual-chassis status                  

Preprovisioned Virtual Chassis
Virtual Chassis ID: dafc.a701.3c8d
Virtual Chassis Mode: Enabled
                                                Mstr           Mixed Route Neighbor List
Member ID  Status   Serial No    Model          prio  Role      Mode  Mode ID  Interface
0 (FPC 0)  Prsnt    PG2222222222 ex4300-24t     129   Backup       N  VC   6  vcp-255/1/0
                                                                           1  vcp-255/1/1
1 (FPC 1)  Prsnt    PE4444444444 ex4300-48t       0   Linecard     N  VC   0  vcp-255/1/0
                                                                           2  vcp-255/1/1
2 (FPC 2)  Prsnt    PE1111111111 ex4300-48t     129   Master*      N  VC   1  vcp-255/1/0
                                                                           3  vcp-255/1/1
3 (FPC 3)  Prsnt    PF3333333333 ex4300-24p       0   Linecard     N  VC   2  vcp-255/1/0
                                                                           4  vcp-255/1/1

Solution

The issue was caused by commands using not refreshed 'other_re' values. Fix was applied to check the 'other_re' values to display the correct output. 
The fix will be applied to the Junos 20.4R3-S8, 21.2R3-S6, 21.4R3-S4, and so on.

The issue is confirmed as a cosmetic issue and has no service impact.

Modification History

Initial version