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8.6

Designing for two WAN (non Internet) links.

Asked by fahim in Network Design & Methodology, Network Routers, Internet Service Providers (ISP)

Tags: Dual WAN links, MPLS load balancing

Hi Guys,

I have tried to make the attached diagram as simple as I could. The scenario is:

Till recently we had only one ISP1 giving us intrasite MPLS VPN connectivity. We ran into major support issues with them and have hence decided to bring in a second ISP2 providing us alternative MPLS VPN links to three of our Site offices spread across two continents. We are sitting in say: Site 1.

At all the three sites, the MPLS links terminate on ISP administered routers (1800 ciscos).

Till now, it was simple, the ethernet interface used to come in and terminate on our L3 core swiitches but the problem starts now when second ISP2 will terminate his connections.

Is there a way I can utilise both the links in a load balancing manner rather than keeping one link purely in the passive way?

Which all routing routers will I have to bring into picture? Can GLBP be of help here? I need to minimise my dependence on this I have to involve ISP1 for they take months to even ad a summarised route onto their network when we raise a request to them.

ISP2 will hopefully be more proactive and they are even willing to administer the 'ISP2 Router1'  which will eventually sit in our premises.

Pls advise
Attachments:
 
WAN links diagram
WAN links diagram
 
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[+][-]04/05/09 09:26 AM, ID: 24071945Accepted Solution

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About this solution

Zones: Network Design & Methodology, Network Routers, Internet Service Providers (ISP)
Tags: Dual WAN links, MPLS load balancing
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Solution Provided By: cstosgale
Participating Experts: 5
Solution Grade: A
 
 
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