Hi, I am preparing to bring up a new site in an ospf network. The new site
will be a training facility connected back to the main office by a t1.
Currently we use OSPF and have everything in area 0, around 100 routers.
I want to make this new site a different area and to make the new area a
Totally Stubby Area. We have two 7513 routers at the main office that
handle all the wan traffic, the new remote office would connect to one of
these. The remote training office will have a 4500.
One of my coworkers suggested that the 7513 at the main office should be the
Area Border Router, because we should keep area 0 from being spread out over
a bunch of wan links. I had it in mind that the remote 4500 should be the
ABR. I don't have a strong reason for thinking that way. The cpu of the
7513 runs between 20-30 % utilization according to snmp info.
Are there any rules of thumb regarding this? I looked through the Cisco
OSPF network design book and can see some examples that support having the
ABR at the main office. Is that the accepted practice? Are there any
gotcha's to look out for?
Thanks if you can help
dave h
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