Cisco Pix

Discussion in 'Other Cisco Equipment' started by MREJ, Jun 25, 2007.

  1. MREJ

    MREJ Network Guru Member


    Im experimenting with Cisco kit(i need to understand it so using it at home is a good way to learn) i have a PIX 501 , conected to a wa54gs(in bridge mode so its just the modem) and it works brilliantly, it actually give me more speed.

    However, if i dont have any data running over it, for a period 10 mins ish , i sudenly cant connect to the internet, the only solution seems to be to cycle the device. If there is data running over it , the it works fine.

    When i have the problem, I can still get to the pix and the internal network, the Modem shows that it has a connection, the PIX Device Manager says it still has an outside interface.

    Is there a time out somewhere? any suggestions? Would be most appriciated! and sorry if its an obvious question

  2. eric_stewart

    eric_stewart Super Moderator Staff Member Member

    There is no timeout per se. I'm assuming when you say that you have to power cycle the device you're talking about the PIX. You might think of changing the MTU (maximum transmission unit) of the PIX's outside interface to 1450 or thereabouts since the default MTU = 1500 bytes (though it auto detects supposedly) and there's not enough room in there for the PPPoE header otherwise.

    You haven't said what version of code you are running on the PIX. The latest version of code for the PIX 501 is 6.3(5). Anyway....sounds like a sync issue between your PIX and the DSL modem and short of trying another modem (and the 2 pointers above) I can't think of much else to do.

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