Description

IRB interface is showing down, and we need to know how to clear that status, as irb.0 is not in used

Symptoms

>show interfaces irb.0

Logical interface irb.0 (Index 544) (SNMP ifIndex 512)

Flags: Hardware-Down Up SNMP-Traps 0x4004000 Encapsulation: ENET2

 

For EX Juniper Network devices

Solution

Please confirm what is the configuration related to the IRB and based on that determine what needs to be deleted:

 

In this scenario, interface irb.0 is configured under default vlan:

 

default {

vlan-id 1;

l3-interface irb.0;

 

The interface itself is configured, however vlan is not associated to any physical interface, reason why irb will show down. Besides, vlan associated to the irb, is a default vlan:

 

irb {

unit 0 {

family inet {

dhcp {

vendor-id Juniper-qfx5110-48s-4c-WS3119190245;

 

You can use the following commands to get rid of the hardware down error showing for the interface:

 

#delete interface irb.0

#delete vlans default (if this vlan is not needed)

Modification History

9/20/2023