Multiple ISP w/ VPN, Single 2821

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Apr 3rd, 2008
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Hey, hope someone can help me with this problem. We currently have a 2821 ISR with a T1 from our ISP. We are out of bandwidth so we are upgrading to a Metro Ethernet connection, which has been installed and tested. The problem/question:

I want to have both connections active with the faster connection servicing internal outbound internet traffic and both connections servicing inbound VPN connections until the migration is complete. I added the VPN map to the second interface and can successfully connect and authenticate and connect the VPN through the new connection. However, I cannot pass traffic to the internal network. When I do the following:

ip route g0/1

I can sometimes pass traffic over the VPN, and sometimes not. Is it a situation where the router is load balancing VPN traffic between the two connections?

I guess what I am asking is it possible to do what I am attempting? Two external connections to a single box, with both able to terminate VPN connections? If not, I will have to do a single ungraceful dump to the new connection which will be a major pain.

Please raise your hand if you are totally confused.

Thanks in advance for your help.


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paolo bevilacqua Sat, 04/05/2008 - 12:11
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Sam, is not that we're confused, it's just that your problem has the typical symptoms of misconfiguration. Multiple links, VPN, etc all require a good understanding of routing fundamentals, lot of attention to details, and sometime even expert make mistakes and then spend a lot of time to find and correct them.

Since it's likely that you cannot post here the configuration for all the sites involved, plust it would take a lot of time, can't you just hire someone experienced to get you up ?


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