This is more of a cosmetic issue however it does bug me....

I removed the sub-interfaces off a 3845 router by issuing.

no int fast1/0.10
no int fast1/0.15
default int fast1/0

When I do a show run....the subinterfaces are no longer there. However, a show ip int br has them listed as follows:

router#sh ip int br
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet1/0            unassigned      YES manual down                  down 
FastEthernet1/0.13         unassigned      YES NVRAM  deleted               down
FastEthernet1/0.30         unassigned      YES NVRAM  deleted               down

How do I remove them from NVRAM without a reboot?

1 Answer 1


reload is the only way to purge them.

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