Single carrier multi-circuit asynchronous routing issue
aaron.millisor at bright.net
Wed Jan 7 13:53:25 CST 2009
I am curious to know if anyone has else has hit a problem like the one I
am running into right now.
I have two DS3 DIA's in my router, terminating on two separate routers
at Sprint. We peer with BGP and I am prepending certain of my prefixes
to balance the traffic load.
src __________ dst
220.127.116.11 |----|- ds3 #1 -| sprint 1 |--( ) 18.104.22.168
------- |me | ( internet ) -------
| | ( )
| | __________ ( )
|----|- ds3 #2 -| sprint 2 |--( )
If I were to prepend the network 22.214.171.124 to come in on 'sprint 1', but
have a route to 126.96.36.199 via 'sprint 2' so that traffic comes in on one
circuit but returns on the other, routing is broken. If I change my
route so that packets directed to 188.8.131.52 return on the same circuit
that the traffic is received on, everything works fine.
Has anyone else run into an issue like this before?
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