Description

When deleting the VC-Port on the EX4000 the deleted VC-Port does not show up as Network Uplink

Symptoms

  • SFP not plugged in 
  • VC-Port convertion is not working even after using the correct command:

You can convert network ports to VCPs or vice versa as required. Use the request virtual-chassis vc-port set pic-slot 1 port <port> command to convert the port to a VCP and the request virtual-chassis vc-port delete pic-slot 1 port <port> command to convert the port to a network port.

https://www.juniper.net/documentation/us/en/software/junos/virtual-chassis/topics/concept/virtual-chassis-overview.html#understanding-ex-series-virtual-chassis__section_dnn_mvm_22c

Solution

After deleting the vcp port configuration >request virtual-chassis vc-port delete fpc-slot <fpc-slot-number> pic-slot <pic-slot-number> port <port-number>.

 

The ports won't show up as network port in >show interface terse

 

To fix this we will need to plug in the SFP to make the ports configurable

We can check if SFP's are plugged in or not in >show chassis hardware

 

user@EX4000> show chassis hardware | no-more 
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                XXXXXXXXXXXX      EX4000-48P
Pseudo CB 0     
Routing Engine 0          BUILTIN      BUILTIN           RE-EX4000-48P
FPC 0            REV 12   650-178023   XXXXXXXXXXXX      EX4000-48P
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0          REV 12   BUILTIN      BUILTIN           48x10M/100M/1G Base-T
  PIC 1          REV 12   650-178023   XXXXXXXXXXXX      4x1G/10G SFP/SFP+
    Xcvr 0       REV 01   740-021308   XXXXXXX           SFP+-10G-SR
Power Supply 0            BUILTIN      BUILTIN           JPSU-950W-AC
Fan Tray 0                                               Fan Module, Airflow Out (AFO)
Fan Tray 1                                               Fan Module, Airflow Out (AFO)
Fan Tray 2                                               Fan Module, Airflow Out (AFO)

 

Modification History

2025-09-15 : Article Created

2026-07-09 : Article Reviewed and corrected