Hi,
One of our customer has been facing some issues in the transit of their service provider network which causes routes flapping( in BGP, link is stable) on their primary WAN link router, causing traffic to switchover to backup link and restoring back to primary link and this goes on, resulting in traffic interruptions.
Now this issue is not appearing again from the service provider side, but in order avoid this behaviour in future we were brain storming on adding BGP route dampening so that routes (>1000) from the SP could be suppressed till BGP table gets stable and traffic to take the backup link during that time of instability. This route suppression would stabilise the outgoing traffic from the customer network.
I was wondering how to stop the BGP prefix advertisement to SP from the customer router so that inbound traffic gets stabilised on the secondary link when there is route instability on the primary link/router.
Would appreciate if any idea are shared. Thanks.
Setup overview:
|
|------HSRP----------(R1)----------eBGP---------------ISP
|------HSRP----------(R2)----------eBGP---------------ISP
|
Customer is running OSPF over DMVPN tunnels on top of BGP (used for loop backs)
Akhtar
