: Wednesday, February 28, 2001 4:54 PM
To: [EMAIL PROTECTED]
Subject: OSPF design question re: location of Area Border Router
John,
You could equally well have the 7513 with one interface in area 1 and the
rest in area 0, and the 4500 with all interfaces in area 1, in which case
the 7513 is the ABR
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
I think I must be missing something here, or I don't understand the
concept of ABR.
If you have a 7513 in area 0 connected to a 4500 in area 1, for
instance, then the 4500 will have one interface in area0 and the rest
presumably in area 1. By definition, that makes the 4500 an ABR,
doesn't it?
definitely make the 7513 the ABR.
Andrew Cook
- Original Message -
From: "Hennen, David" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, February 28, 2001 11:32 AM
Subject: OSPF design question re: location of Area Border Router
Hi, I am preparing to bring up
John Neiberger wrote:
Are there any rules of thumb regarding this? I looked through the
Cisco
The main rule is: when you are doing routing, forget about routers
(boxes). Router doesn't make any sense. Think interfaces. In your
situation, when you have your interfaces on a link between the
David, you put the ABR at the main location with one interface (usually LAN) in area 0
and the other in the area created for the remote location. All interfaces at the remote
location would then be associated with the area created for this new site. The ABR is
located at the main location because
01/03/2001 04:19:39 am
Please respond to "John Neiberger" [EMAIL PROTECTED]
Sent by: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
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Subject: OSPF design question re: location of Area Border Router
I think I must be missing something here, or I don't understand the
concept of ABR.
Got it! Because of my lack of experience with OSPF, the original
question confused me until I thought through the configuration. Until
then, I still thought of routers or interfaces belonging to areas. What
really helped me to conceptualize this issue was to toss out that idea
and think of
Got it! Because of my lack of experience with OSPF, the original
question confused me until I thought through the configuration. Until
then, I still thought of routers or interfaces belonging to areas. What
really helped me to conceptualize this issue was to toss out that idea
and think of
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