There's not much point in putting the loopbacks in their own area unless
you're in a lab scenario and trying to make a bigger, more complicated
network. ..At least not that I can think of. However, there is definitely
a usefulness for loopback interfaces in OSPF -- use them to set your RIDs
(used to indentify the router in OSPF LSA's) to controllable, meaningfull
addresses. This doesn't even require that the loopbacks be part of the OSPF
domain, just that they be configured and up. Highest loopback IP on the
router will be the OSPF RID of any LSA's generated by that router (as shown
in commands such as show ip ospf neighbor, etc)...
-Brad McConnell
""Vincent Chong"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi;
>
> For OSPF implementation, an area can be configured in the Loopback
> interface.
> But what purpose, when should I do it?
>
> TIA
> Vincent Chong
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