ifDescr of Vlan sub interfaces

anandmirasdar · ‎03-24-2008

I have Cisco router Model Cisco 3825 IOS 12.4(3b) System Bootstrap, Version 12.3(11r) T2, RELEASE SOFTWARE (fc1).

ifDescr (SNMP oid in mib2) of one of VLAN sub interface is

â€œGigabitEthernet0/0.445.1Q vLAN subifâ€

Now I have upgraded its IOS to IOS 12.4(9t).

ifDescr of same interface is now â€œGigabitEthernet0/0.445â€

Due to this change my monitoring tool is not discovery this interface.

In all previous IOS versions ifDescr of VLAN sub interface contains â€œvLANâ€ string. So I want to know why this change in ifDescr done by Cisco. Will all next IOS versions will follow this change.

Or is there any way to change ifDescr of interface.

Joe Clarke · ‎03-24-2008

This was changed as part of the fix for CSCsg40639. If you want the old ifDescr back, use the global config command, "vlan ifdescr detail".

anandmirasdar · ‎03-26-2008

I have tried your solution but it is not working

Looks this command (vlan ifdescr detail ) does not exist on his router?

NAT-PSB-WAN1#

NAT-PSB-WAN1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

NAT-PSB-WAN1(config)#vlan

NAT-PSB-WAN1(config)#vlan if ?

% Unrecognized command

NAT-PSB-WAN1(config)#vlan ifdescr ?

% Unrecognized command

NAT-PSB-WAN1(config)#

Joe Clarke · ‎03-26-2008

Sorry. I had thought it was introduced with the VLAN change. However, you will need to upgrade to 12.4(15)T to get this command.

mohammedjeena · ‎02-15-2018

We resolved the issue in the following way:

- remove below commands:

#vlan ifdescr detail

#snmp-server ifindex persist

- write config and reboot CE

- re-add only this command (if needed)

#snmp-server ifindex persist