Difference service provider MPLS load balancing Scenarios

[kumarmh91282]

Hi All,

We have a Centrally location connected to 10 remote locations via Two different MPLS connections.

At present it is Active + Standby, 

Please could you Suggest ways to implement Active + Active 

Central location have 2 separate MPLS routers for each service providers, similarly at remote locations have separate routers for different service providers

[Giuseppe Larosa]

Hello @kumarmh91282,

we would need more details to help you .

What type of MPLS service is in use with SP1? 

and what type of MPLS service is in use with SP2?

What routing protocol is spoken over the WAN on SP1?

What routing protocol is spoken over the WAN on SP2?

For the remote sites if client Vlans are served directly by the two WAN routers it could be enough to use GLBP instead of HSRP to achieve load balancing in direction remote sites to Central Site.

If Remote site topology is more complex and there are other devices like multilayer switches performing inter VLAN routing GLBP is not a viable solution (at least not alone)

In this case the multilayer switch(es)  need two routes for the Central site with same AD and same metric value and same prefix length ponting to the two WAN routers and possibly learned from a routing protocol.

Depending on the type of MPLS service you may be  able to use a single IGP like OSPF or EIGRP everywhere or you need multiple routing protocols ( example eBGP with SP1 and SP2 if service is a basic MPLS L3 VPN and an IGP in each site ) and redistribution.

Hope to help

Giuseppe

[Joseph W. Doherty]

I believe you'll need to further explain how you route with your MPLS service providers and how you route to your site routers (from their local LANs).