Routing Issue - MPLS

[vishal.rane]

Hi

Network Layout is attached.

Before the inclusion of MPLS Link at DC2, all traffic for DC2 orginating from any branches passes DC1 and all traffic flow was ok.

Recently we got MPLS connection to DC2, once the MPLS is up at DC2 we start getting routing issues and packet loss. Currently we got these issues;-

1. Traffic from DC2 to DC1 prefers mpls path rather than Point-to-Point Broadband Link.
2. Traffic from any branch to a Server hosted in DC1 passed via DC2 ( Branch ---- DC2------DC1 )
3. Traffic from DC1 to DC2 prefers mpls path rather than Point-to-Point Broadband Link.

MPLS network is a service from local service provider running BGP. All our sites are running OSPF. To have full reachability multual redistribution was configured, same setup was applied at DC2.

Any Expert opinion what is likely the issue.

thanks

Vishal

[Haris P]

Dear ,

I hope that you are using BGP as CE-PE routing protocol . Just make sure that you are advertising only locally originated routes from DC1 and DC2.

Also if there are some  redistribute-static or redistribute-connected under bgp it will also make some problem .

for example ,let us DC1 uses 192.168.1.0/24 and DC 2 uses 192.168.2.0 and if you make a static route for 192.168.2.0/24 thru 20Mbps link from R1 and if you are putting redistribute-statc in DC1 , the remote branches will see thenetwork 192.168.2.0/24 as it comes from DC1 and it might make some problem .

So better please paste your config on DC1 and DC2