You use the router ID of the remote router in the
virtual link command. This will be the highest IP on a
loopback interface. If you have multiple routers in a
area use the show ip ospf commands to find out what
the router ID is the router is forming an adjanency
with, and used that for the virtua
There seems to be one major advantage of using loopback addresses for
OSPF-the highest loopback will be chosen for the RID and it stays up as long
as the router is up and you can use any address you want. There are other
advantages but not as significant as this.
If you use a loopback address whic
Keith,
Generally the router being used to connect you to area 0 will be on the same
subnet. Therefore no routing issues. As far as loopback you have to use
the router ID as the IP address of the router so if you are using a loopback
address to be the router ID that would explain it.
Cory
--
The connection is actually from OSPF router ID ( RID ) to router i.d.
In the case of Doyle, his example is so nicely numbered that the RIDs and
the loopback addresses are the same. ;->
I am guessing that this is one of the gotcha's that evil lab proctors might
throw into the break-fix, or maybe
On Thu, 9 Nov 2000, Keith Townsend wrote:
> When creating a virtual link between an ABR non-directly connected are to an
> ABR in the backbone should you always use the loopback address for the
> virtual link. Doyle does this on page 943 of his Routing TCP/IP book.
loopbacks are always good to
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