Applying BGP conditional advt when receivng default only from ISPs

fortis123 · ‎04-22-2008

Hi All,

How can we apply BGP Conditional advt. incase the local routers receiving only default routes from the ISPs..? In my scenario, I want Local rtr1 to be the primary...

2 local WAN rts, ebgp peering with seperate ISPs. Receiving defaul rts only (0.0.0.0):

Local-RTR1#sh ip bgp

Network Next Hop Metric Weight Path

*> 0.0.0.0 217.15.96.4 0 0 20520 i

* 217.15.96.5 0 0 20520 i

*> 62.31.67.0/24 0.0.0.0 0 32768 i

*> 8.27.120.96/27 0.0.0.0 0 32768 i

rtr BGP config:

router bgp xxxx

network 62.31.67.0 mask 255.255.255.0

network 8.27.120.96 mask /27

neighbor 27.150.9.48 remote-as yyyy

Local-RTR2#sh ip bgp

Network Next Hop Metric Weight Path

*> 0.0.0.0 21.23.53.157 0 8426 i

*> 62.31.67.0/24 0.0.0.0 0 32768 i

*> 15.35.14.0/27 0.0.0.0 0 32768 i

rtr BGP config:

router bgp xxxx

network 62.31.67.0 mask 255.255.255.0

network 15.35.14.0 mask 255.255.255.224

neighbor 23.25.53.17 remote-as zzzz

Please suggest...

Thank you

MS

Edison Ortiz · ‎04-23-2008

MS,

We need more information about your topology.

You asked about RTR1 being primary while RTR2 secondary but we don't know how the connection is made to the rest of the network and the routing protocol that is used, in addition to BGP.

Per your output, there isn't enough information to make one router preferred over the other one as both are receiving a default route from different providers.

__

Edison.