innumbered interface

Unanswered Question

what is the idea behind an "ip unnumbered" interface. I know it helps conserving addresses on the network, but when should it be used?

Here is what I did:

int loop 1

ip add

int vlan 1

ip unnumbered vlan 1


I did it in hope that the next time vlan 1 is down I still can reach the router through But after all the reconfigurations the net became unavailable. I coldn't ping any PC that I had been able to do before. And another question: how do unnumbered interfaces relate to their "numbered" hosts? Are they bridged or what?

thx in advance.

I have this problem too.
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