Okay, I've been beating my head over this one for a week, and finally give
up:
I'm trying to understand the logic behind OSPF's and Cisco's routing
selection behavior in this instance:
I have 6 routers, segmented into 3 areas - areas 0, 1, and 2.
Routers A1 and A2, which sit in area 1, have fas
Are you sure that the B1 Network Summary LSA had a lower cost then the B2
Summary LSA? According to how I understood your topology, B1 should
advertise
a cost of 65 to reach network C and B2 should advertise a cost of 2. So they
should both use the T1 link to B2 to exit the area. The reason for
/3304_c1_sec2.pdf
p 16
hth...
-e-
- Original Message -
From: "Ian Schorr"
To:
Sent: Friday, October 05, 2001 1:49 PM
Subject: OSPF inter-area learned routes [7:22268]
> Okay, I've been beating my head over this one for a week, and finally give
> up:
>
> I'm tryin
I sketched your network and it made me wonder if the path you think is
"shortest" really is shortest.
To get to the C routers in Area 2, the Area 1 A routers have four possible
paths:
1. A1---T3---B1---B2---T3---C2
2. A1---T3---B1---T1---C1
3. A2---T1---B2---T3---C2
4. A2---T1---B2---B1---T1--
Sorry, I meant to say that I would have expected B2's cost to be 3 not 2.
Curtis Call wrote:
> Are you sure that the B1 Network Summary LSA had a lower cost then the B2
> Summary LSA? According to how I understood your topology, B1 should
advertise
> a cost of 65 to reach network C and B2 shoul
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