Telnet Sessions - Dropping Intermittently - RV082

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by jgerrits, Jan 26, 2007.

  1. jgerrits

    jgerrits LI Guru Member

    I have two RV082 Routers, Connected Gateway to Gateway. One is on a 3up/3down fiber optic internet connection. The other is on a stable and solid DSL. The VPN tunnel has been up for over 30 days, I NEVER(one in the 6 months I've owned it) have had to reset my router to get the VPN tunnel back up.

    We use telnet (over the VPN) to connect to our business software, from our remote office (with the DSL) to our unix server at our other location.

    Unfourtunatly, every once in a while, users are booted off of their telnet session abrubtly. Sometimes, it is even while they are typing in the session.

    Has anyone else, ever seen anything that remotely resembles this issue? It has been an issue for over 4 months now.
  2. jgerrits

    jgerrits LI Guru Member

    Heh, I swear I've never met anyone else with this issue.

    I can provide more information if anyone thinks they have even the slightest chance at providing some insight into this issue. Just lemme know.
  3. d__l

    d__l Network Guru Member

    Any chance that the telnet drops happen during a tunnel rebuild at the end of an SA Life Time?
  4. jgerrits

    jgerrits LI Guru Member

    The times do not seem to match up. In order to be certain, what is the longest you would reccomend on a SA Life Time?
  5. pablito

    pablito Network Guru Member

    What telnet clients are you using? Can you possibly use SSH instead? I say this because I rarely drop a connection like you have even when I know the internet or VPN has gone down for short periods. I've seen this happen over Cisco VPN clients on Windows but my own SSH connections would still be alive when the connection came back up. My connection would always survive an SA key exchange.
  6. d__l

    d__l Network Guru Member

    I've always used 28800 secs for Phase 1 and 2, but that was a carry over from the settings I used on a tunnel between two SX41s. I replicated that when I replaced one SX41 with the RV082. Admittedly since the change over, the VPN tunnel has only been tested for short periods so I can't say if there could be any problem with that time value.
  7. jgerrits

    jgerrits LI Guru Member

    The client is a program called ICE.TCP, It has the added benefit of some extra dumb terminal emmulation, and print options. The options for the program, do not go far beyond setting a different port if you wish (Default is 23 however)
  8. ifican

    ifican Network Guru Member

    I have seen this but never on a soho device. Questions: Is it the same users continuously or does it happen to everyone? The users it happens too are they on the same isp? Does it happen roughly at the same time after opening the session or is it intermittent?
  9. jgerrits

    jgerrits LI Guru Member

    It is different users, and after graphing drop times, over 2 months, there is absolutely no discernable pattern. This happens on computers using both NT, and XP machines without discrimination.

    We do NOT use the same ISP for both of our locations however. I am starting to think that this is the root of the problem.
  10. RAD_MAN

    RAD_MAN Network Guru Member

    I have a customer with the EXACT SAME PROBLEM, be it a bit larger scale, i have a mix of linksys VPN routers, but most of them now are RV042 routers. the line of business app is completely telnet based running thru the VPN to a UNIX server at the main location. and randomly they will be using it and BAM they are disconnected. for a while i had dual internet connections plugged into the RV042 (T1 and DSL) at the central location with the unix server (DSL for a fall back), i disconnected one (the DSL) of the WAN / internet connections and the drop rate at the other offices got ALOT better.
    the users at the central location never get disconnected from the unix server though, just fyi.

    i can tell you this issue still rolls around every now and then, it has it's good and bad days. i have one location (branch office) that is on a fraction T1, going to the full T1 at the main office (both T1's are from same provider), and they still disconnect sometimes. and i am only talking like 6 people at the branch office using telnet thru the VPN. and that is RV042 to RV042 (latest release firmwares). i have thought about upgrading the central office to a RV082 or RV016 or maybe a cicso if needed... but i am not sure that is going to solve any of the issues.
    i know exactly where you are coming from, i have been working this issue from every angle i can think of for years. =\

    if you come up with a cure let me know please, i would love to get this old monkey off my back.
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