From: Gary Bartlett (ciscokid@sympatico.ca)
Date: Sat Sep 13 2003 - 21:44:50 GMT-3
Hey Group,
I've been working on a lab out of Hello Computers, & there solutions
don't even work. So below to the left is the physical topology, & to the
right, the logical.
Note: R7 is the RR for neighbors R1, R2, & R4
BB2 BB1 __________ _______________
| | | |
|
| | | BB2 |
BB1 |
| | | | AS112 | AS111
| |
R7 R1 | | | |
|
| |
---------------------------
| | |
|
| | R7--------------R1
| | | |.
|
R6--------------R4--| | '. |
'. | | '. AS4799 |
'. | | '. R4
'. | | '. |
'. | ___|________ '. |
'. | | |AS65060 | '. |
'. | | R6 | '.R2
'.R2--| |____________|
|
The problem that I see is when R7 tries to send traffic to the rest of
AS4799, because of the physical topology it sends its packet to R6, &
because of the logical topology (R6 only being neighbor with R7) it
sends the packet back to R7 & a loop is caused...
I'm almost sure my answer is not the best solution, so let me know what
you think.
R6
router bgp 65060
neighbor 150.50.56.7 route-map as4799 in
!
ip as-path access-list 5 permit ^4799_
!
route-map as4799 permit 10
match as-path 5
set ip next-hop 150.50.246.4 150.50.246.2
I know this is not the best solution, packets always go to R4 based on
the next hop specified above
I was considering setting up tunnels, I'm sure there must be a better
solution out there!
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This archive was generated by hypermail 2.1.4 : Wed Oct 01 2003 - 07:24:27 GMT-3