BGP and MPLS

[jleonguerrero]

I have a BGP design question for an Enterprise.  I have one edge router handling multipe ISP's for Internet and an additional ISP for MPLS traffic (remote offices) running BGP.  Can I breakout the MPLS onto a separate router using the same registered public ASN? 

Current Deployment

Edge Router:

Internet (BGP ASN12345)

ISP1

ISP2

ISP3

MPLS

ISP4

Proposed New Deployment

Edge Router1:

Internet (BGP ASN 12345)

ISP1

ISP2

ISP3

MPLS Edge Router2:

MPLS (BGP ASN 12345)

ISP4

ISP5 (future)

[Vinit Jain]

Hello,

I dont think there is any problem segregating your Internet and the MPLS connections on two different routers. The only thing i would recommend is to ensure that the routing within your environment i.e. Intra-Domain so that traffic leaves the correct router.

Another thing that I would like to understand is what is the purpose of having 4 ISP connections for Internet. Are they sharing the Internet Routing table. Even too much redundancy is not really good in the network

Regards

Vinit

[jleonguerrero]

Technically 3 for the Internet, ISP4 is strictly MPLS.

Initially ISP2 and ISP3 were supposed to be for VPN traffic but since its difficult to route VPN traffic back out the same ISP from where it originated we decided to configure them for IP SLA.