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juniper mx – Can’t show invoke command to backup RE from master RE

I have an MX960 box that faced an issue as below.
Mater RE (RE1) can’t show any command invoke-on backup RE (RE0), for example: show version invoke-on all-routing-engines.

{master}

nms@MX960> request routing-engine login other-routing-engine   

connect to address 128.0.0.4: Operation timed out

Trying 10.0.0.4...

re0: Operation timed out

connect to address 128.0.0.4: Operation timed out

Trying 10.0.0.4...

re0: Operation timed out

 

####show database-replication summary

{master}

nms@MX960> show database-replication summary

 

General:

    Graceful Restart           Enabled

    Mastership                 Master

    **Connection                 Down**

    Database                   Available

    Message Queue              Not Ready

 

####show task replication

{master}

nms@MX960> show task replication

        Stateful Replication: Enabled

        RE mode: Master

 

    Protocol                Synchronization Status

    OSPF                    NotStarted           

    BGP                     NotStarted           

    MPLS                    NotStarted           

    RSVP                    NotStarted           

    LDP                     NotStarted  

I checked logs on backup RE (RE0) and got that interface ESW port 13 (interface connects SCB0 and RE0) flapped several times. But then, it is up again, but from RE1, I still couldn’t show any command invoke-on backup RE (RE0).

enter image description here

KB33394

From master RE, show chassis routing-engine, I see all REs (RE0 is backup an RE1 is master).
But from backup RE, show chassis routing-engine, state of master RE is Present.

**From RE0 (backup RE)**
viettel@KHA0011PRV01> show chassis routing-engine    
Routing Engine status:
  Slot 0:
    Current state                  Backup
    Election priority              Master (default)
    Temperature                 31 degrees C / 87 degrees F
    CPU temperature             30 degrees C / 86 degrees F
    DRAM                      16329 MB (16384 MB installed)
    Memory utilization           9 percent
    5 sec CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     0 percent
      Interrupt                  0 percent
      Idle                     100 percent
    1 min CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     0 percent
      Interrupt                  0 percent
      Idle                     100 percent
    5 min CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     0 percent
      Interrupt                  0 percent
      Idle                     100 percent
    15 min CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     0 percent
      Interrupt                  0 percent
      Idle                     100 percent
    Model                          RE-S-1800x4
    Serial ID                      9009219924
    Start time                     2022-08-18 11:39:45 ICT
    Uptime                         98 days, 22 hours, 4 minutes, 22 seconds
    Last reboot reason             Router rebooted after a normal shutdown.
    Load averages:                 1 minute   5 minute  15 minute
                                       0.02       0.11       0.14
Routing Engine status:
  Slot 1:
    Current state                  Present

**From RE1 (master RE)**
{master}
nms@KHA0011PRV01> show chassis routing-engine 
Nov 25 09:43:52
Routing Engine status:
  Slot 0:
    Current state                  Backup
    Election priority              Master (default)
    Temperature                 31 degrees C / 87 degrees F
    CPU temperature             30 degrees C / 86 degrees F
    DRAM                      16329 MB (16384 MB installed)
    Memory utilization           9 percent
    5 sec CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     0 percent
      Interrupt                  0 percent
      Idle                      99 percent
    Model                          RE-S-1800x4
    Serial ID                      9009219924
    Start time                     2022-08-18 11:39:45 ICT
    Uptime                         98 days, 22 hours, 3 minutes, 17 seconds
    Last reboot reason             Router rebooted after a normal shutdown.
    Load averages:                 1 minute   5 minute  15 minute
                                       0.11       0.13       0.15
Routing Engine status:
  Slot 1:
    Current state                  Master
    Election priority              Backup (default)
    Temperature                 32 degrees C / 89 degrees F
    CPU temperature             30 degrees C / 86 degrees F
    DRAM                      16329 MB (16384 MB installed)
    Memory utilization           9 percent
    5 sec CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     2 percent
      Interrupt                  0 percent
      Idle                      98 percent
    1 min CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     2 percent
      Interrupt                  0 percent
      Idle                      98 percent
    5 min CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     2 percent
      Interrupt                  0 percent
      Idle                      98 percent
    15 min CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     2 percent
      Interrupt                  0 percent
      Idle                      98 percent
    Model                          RE-S-1800x4
    Serial ID                      9009219890
    Start time                     2022-02-10 00:50:35 ICT
    Uptime                         288 days, 8 hours, 53 minutes, 13 seconds
    Last reboot reason             0x1:power cycle/failure
    Load averages:                 1 minute   5 minute  15 minute
                                       0.14       0.23       0.23

After I rebooted RE0, everything OK.
Does anyone face the same issue? Pls, give me some points of your view.
Thanks.

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