VPN Client connectivity issues over Sprint MPLS WAN

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Apr 9th, 2008
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have a question relating to out of order packets. We are having an issue where over our sprint MPLS network a particular vpn client connection won't work. We have troubleshooted everything with not luck on getting this to work. Another VPN connection a vpn concentrator 3000 works but the vpn end point that is a cisco vpn card in a 7200 router won't work. It works on our main site but not over the MPLS. Our equipment is a 7204 which links over the sprint MPLS to our varying routers either 3825 or 3745. We control the routing through a GRE using EIGRP.

Has any body on this point hear of out of order packets affecting something like this. The vpn client log definetely specifies out of order packets, but it says this at our main site and connects. Cisco.. our CCIE ... nobody has been able to find the definite source or solution for this. Oh and it work for a while and then quit working.

We have verified that the DF bit is clear and that firewalls don't appear to be blocking the connection.

It is connecting via udp and we don't have really any control over the server end point.The only sugguestion we got from cisco was that the vpn interface needed to possibly lower the MTU which they will not do.

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