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RVS4000 DDNS VPN problem and resolution identified!!

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by Max10, Nov 15, 2007.

  1. Max10

    Max10 LI Guru Member

    I have a RVS4000 VPN tunnel connected to a WRV54G both running DDNS. The tunnel comes up just fine but anytime the WRV54G gets a new ip address the RVS4000 does not update the ip address for the VPN connection. Please note that the setting for the remote gateway is set to be resolved by DNS FQDN. So this is what I have to do to fix the problem and have the tunnel come back up. I ping the other gateway by its host name so I can discover what the new ip address is. Then I log in to my RVS4000 switch the remote gateway setting to ip address only and put in the new address. I then hit connect and the tunnel pops back up. Then I switch the remote gateway setting back to resolve by dns and the tunnel stays up. The tunnel will stay up for about a week or so until the dynamic address changes, and then I have to go through the procedure above. It is interesting that when I am fixing the problem and I switch the remote gateway ip address to ip address only instead of resolve by DNS that it always shows the last ip address that I manually put in. From this I have come to the conclusion that DDNS feature in the RVS4000 is not resolving the remote gateway ip address by DNS. I've heard talk of firmware .14 addressing a DDNS problem, does it fix this problem?

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