3700 series access router

[nahasca]

I have a 3700 series access router. Users connect to it via dialup. The session are disconnected in 10 minutes.

Any help would be appreciated.

Best Regards

C. Abdul Nahas.

[Richard Burts]

If you gave more information it would be easier to identify the problem. Could you supply details of how the router is configured?

My first guess is that there is some issue with how the idle timeout is configured and how interesting traffic is identified.

[Richard Burts]

the email address in your reply to me did not work so I am posting my response to the forum. what happened about your email address?

If the idle timeout was first set to 600, then it certainly explains

why sessions were timing out at 10 minutes (600 is in seconds and is

exactly 10 minutes). If you increased the idle timeout that much the

symptoms would certainly stop, but I would say that it was not the

optimal solution.

I would suggest that we should look at how you define interesting

traffic. When the router sees an "interesting" packet, the idle

timer is reset. If interesting traffic is correctly defined then the

idle timeout can be set to a lower value and would be able to protect

you from someone dialing in, doing nothing for long periods of time,

using resources, and probably running up larger phone bills.

Rick

Abdul Nahas wrote:

> Hi,

>

> Thanks for the reply. I have set the Dialer

> idle-timeout to the value 2147483 after this was

> happening. I am running the version 12.2(15)T9. The

> users are authenticated by an ACS server. The ACS

> server gives the IP to the users machine when dialing

> in. At the beginning the dialer idle-timeout was set

> to 600 after this problem started i have set it to

> 2147483.

>

> Awaiting your reply.

>

> Best Regards

>

> C. abdul nahas

--

Rick Burts CCIE 4615 EMail: rburts@netcraftsmen.net

Chesapeake NetCraftsmen 410.573.9372 (Office)

1070 Foxcroft Run 443.994.0675 (Cell)

Annapolis, MD 21401 WWW: http://www.netcraftsmen.net

With 9 CCIEs on staff Chesapeake NetCraftsmen offers services in

network consulting and training. Our services include Security,

IP Telephony, Network Design, Implementation, Troubleshooting,

as well as Network Management.

[makchitale]

Can think of couple of possibilities:

1) If the calls disconnect exactly at 10 mins then we could have the “absolute-timeout 10” command under the lines. Irrespective of interesting traffic the call will disconnect at that end of the configured minutes.

http://cisco.com/en/US/products/sw/iosswrel/ps1835/products_command_reference_chapter09186a0080087117.html#1003950

2) The “dialer idle-timeout” is set to 600 seconds but the interesting traffic to reset the timer is not correctly defined. Please refer to the following link for understanding & troubleshooting idle timeout issues:

http://cisco.com/en/US/tech/tk801/tk133/technologies_tech_note09186a0080094eb7.shtml

Thanks, Mak.

[jkilleda]

Hello Abdul,

3700 series access router
Adjust the dialer idle timeout in the dialer interface configuration. The default is 120 seconds, but you may wish to raise or lower this value depending on your needs.

router(config-if)#dialer idle-timeout