From: Carlos G Mendioroz (tron@xxxxxxxxxxx)
Date: Mon May 06 2002 - 07:52:00 GMT-3
Steven,
virtual links are always area 0.
They are use to make up for the need of area 0 being THE
connecting area (aka backbone) and in one piece.
Tipical uses have one end in real area 0, and the other in
a remote (i.e. non directly connected) area, but it also
can be used to reattach a disconnected area 0 sector
(thus both ends lying in area 0).
Now, answering you question, no, you can not.
(Also you need not, since it is ok for having more than
one area X at one time.)
What you do need is having area 2 directly connected to
area 0, and there you can (should) use one or two
VLs to go via area 1.
steven owen wrote:
>
> I GOT r1,r2,r3 connected by FR,all the interfaces on
> FR are on area 1,r1 and r2 have an ethernet int each
> ,which is on area 2,r3 have an int on area 0.
> Can i build a vl between r1 ,r2 on area 2 to backup
> area 1 link if FR is down?
> and before i build vl,r1 always receives such the
> following error message:
> "%OSPF-4-ERRRCV: Received invalid packet: mismatch
> area ID, from backbone area must be virtual-link but
> not found from 20.4.1.1, FastEthernet1/0"
> but r2 doesn't have an int on area 0.Why?
>
> Thanks.
>
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