RV082 with some BEFSRX41 VPN unstable

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by fedoro, Nov 5, 2006.

  1. fedoro

    fedoro Guest


    I'm new in this forum as post-man ;-), but I am a read-post-man for a long.

    Now I have a problem in a new installation. I have a RV082 configured as VPN endpoint in a central office. This is conected to internet trought a ADLS router; the NAT in this ADSL router is sending port 500 to the RV082.

    i have about 8 BEFSX41 routers in branch offices conecteds to internet in a similar way, via ADSL routers with NAT on port 500.

    FW are for RV082 and 1.52.10 for the BEFSX41.

    I have configured IPSEC VPN from every branch BEFSX41 to the central RV082.
    The config that I've used is: dinamic ip with email autentication, and agresive mode (in the BEFSRX41) with the email put as the username. I have selected PFC (Perfect Forward Secrecy), keep Alive, and I use DES, SHA, 768 Bits, y Key Lifetime 3600 sec.

    Tunnels are running correctly EXCEPT that sometimes, ip comunication trought the tunnel is lost. The tunnel remains active, but I can't establish a telnet connection to the other side. If I "Disconnect" the tunnel and reconect again, telnet pass the tunnel without problem for another time.

    I have one branch that are more robust. This router is running from 5 days without lost communication. I have a telnet session opened with a script that
    request the time every 30 seconds. i don't know if this is important to let the tunnels stables (put some traffic in the tunnel).

    Any Ideas?
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