Sounds like you don't have interesting traffic associated with the interface. Are you using DDR or Dialer interfaces? Are you running a routing protocol over this ISDN link?
In the running-config DDR look for int bri 0 dialer-group 1 global command dialer-list protocol ip permit Dialer interfaces int dialer 1 dialer-group 1 global command dialer-list protocol ip permit If this is not setup to reset the idle timers on the interface it will disconnect at default 120 secs or what ever time you have specified with dialer idle-timeout command. Hope this helps.. Ronnie ""Ants"" wrote in message news:[EMAIL PROTECTED] > Hi, > Have a Dialup Cisco 3640 router with IOS 12.0(9) > recently had a number of ISDN users complaining that they lose their > connection after a set time once logged in successfully.. > the idle-timeout on the dialer interfaces is not set..so the default is 120 > seconds... promptly on 120 seconds they get chucked off the network.. when > I increase this timeout to whatever amount it disconnects the user > regardless but at the spefcified timeout set. > thusfar only a couple of the dialer interfaces in use affected and most of > them set to same settings. > > no upgrades or changes recently made. > could this be a bug? > > thanks in adv. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72271&t=72247 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]