Hi Experts,
I am looking for your assistance on the following issue regarding removal of loopback interface from isis configuration.
Router Config:-
router isis A
is-type level-1
net 49.0000.0000.0000.0000.0000.0000.0000.1111.00
log adjacency changes
interface Loopback0
!
interface Loopback1
passive
address-family ipv4 unicast
!
!
interface Loopback2
!
!
Now when I try to remove the loopback interface from router isis configuration mode then it gives following error message.
RP/0/7/CPU0:ios-xr(config)#router isis A
RP/0/7/CPU0:ios-xr(config-isis)#no interface Loopback0
RP/0/7/CPU0:ios-xr(config-isis)#commit
Mon Nov 30 03:02:56.624 UTC
% Failed to commit one or more configuration items during a pseudo-atomic operation. All changes made have been reverted. Please issue 'show configuration failed' from this session to view the errors
RP/0/7/CPU0:ios-xr(config-isis)#show config failed
Mon Nov 30 03:03:00.717 UTC
!! SEMANTIC ERRORS: This configuration was rejected by
!! the system due to semantic errors. The individual
!! errors with each failed configuration command can be
!! found below.
router isis A
no interface Loopback0
!!% Interface has already been deleted: Cannot delete interface; no currently associated instance
!
However the interface 'loopback 0' is properly configured on the router and can be viewed in 'show ipv4 interface brief'.
Kindly suggest what could be the reason for this behavior.
