MPLS VPN DC/DR

sachinshinde · ‎01-01-2009

Hi,

In VPN n/w i have DC & DR. Both DC & DR r geographically separate. Server IP pool used both in DC & DR is different. Need to configure MPLS VPN in such way that when DC is active spoke should not able to access DR. when DC becomes unvailable spoke shoould able to access DR.

I m thinkin of conditional BGP. Let me know if you have any suggestion on conditional BGP or different solution.

Thanks...

jon.harald.bovre · ‎01-01-2009

Might be route tracking in conjunction with IP SLA pinging DC could be used

sachinshinde · ‎01-04-2009

Hi Jon,

Didnt get u.

In my scenario if DC & DR both have different IP pool then I in customer VRF (in MPLS VPN cloud) both IP pool will become available and spoke location can access both DC & DR simultaneously which I do not want.

I want client to only able to access DR if DC fails.

Giuseppe Larosa · ‎01-05-2009

Hello Sachin,

in your case what could help is BGP conditional advertising:

the PE routers (or the CE routers) of the DR site start to advertise the DR ip subnets when the DC subnets disappear from the VRF routing table.

see

http://www.cisco.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cdbgp.html#wp1023602

Hope to help

Giuseppe

sachinshinde · ‎01-28-2009

Hi Giuseppe,

Can I use BGP conditional advertising feature in MP-IBGP instead of eBGP. i.e. if particular route present in end A PE router VRF then do not advertise alternate route to end B PE router something like this...

Mohamed Sobair · ‎01-29-2009

Pls post a detailed Network diagram..

HTH

Mohamed