CISCO timeout not working

[benedictheal]

I have a CISCO 770 ISDN router, which works fine, except that I cannot get the timeout to work. I set the timeout, but with no local traffic (I can even unplug all PCs!) cannot get the line to disconnect automatically.

I notice that every 7-8 seconds the RXD/TXD lights flash, which presumably stops the timeout closing the connection. Is this likely to be some sort of 'keep-alive' from the ISP, or is it something the router itself might be generating?

I'm totally at a loss, and live in dread of enormous telephone bills from when I don't remember to disconnect manually!

Benedict

 

[Jsteve]

have you configured static routes and redistribute static?
i.e.
Router(config)#router igrp 100
Router(config-if)#network 172.108.0.0
Router(config-if)#redistribute static
Router(config-if)#exit
Router(config)#ip route 192.150.42.0 255.255.255.0 10.0.0.2

Sounds like one of the routers are sending routing updates.

you might want to run the degub isdn history or debug isdn event to see whats happening.

 

[Guest_imported]

First off I am not too familiar with Cisco routers.

But try unplugging the Ethernet plug on the router and see if the router still stays connected. If not then it may be your PC's that is causing the keep-alive. Check for things like NetBEUI which is common for Windows PC's. If this is the case a filter is probably in order.

 

[benedictheal]

Many thanks for responses.
1. ISDN connection stays up even when I disconnect
ALL ethernet connections! I just have the router
and PCs - nothing else at all!

2. The suggestion about routing updates sounds plausible though I'm out of my depth with the static routing suggestions. I notice that in the reference manual for the 770 there is no mention of static routes, and none of the following commands are provided:
debug
redistribute
router
Do these just come on bigger routers?

Benedict

 

[Jsteve]

IF your using IOS 12.x than those commans should work?
If you type the ? it will show you what commans you can use.
i.e.
router>enable
router#config interface
router(config)#debug ?
router(config)#debug isdn q921 (this will so call setup/teardown)
router(config)#no debug all (This will turn debug off)
router(config)#debug isdn q931 (This will show isdn activity)
router(config)#no debug all


are you running a routing protocol, i.e. Rip,IGRP,?

if you are, static routes will on the interface will keep that interface from sending out routing updates.

 

[Jsteve]

OK,
I did a little research on CCO, here is what I found

On the 770 series router, RIP updates keep the ISDN link up if the idle timeout is greater than the RIP timer value, even if the RIP option is linkup. However, it does not cause the link to come up by itself. To correct the problem, use a filter for RIP traffic with the ignore option in the WAN profile.

Try this config option
Router>enable
Router#config interface
Router(config)#router rip
Router(config-router)#passive-interface bri0 (what ever you interface # is)

if this does not work,you need to resaerch on how to configure the filter for rip updates for the 770

 

[jeter]

HHMMMM I see a problem here. Type ( show ) and check out your perm link. the command here is( set 1 pe off and set 2 pe off ) make sure your timeout is set low. With the ethernet port disconnected you should have no problems.


SET USER RemoteNet
SET PROFILE ID 000000000000
SET PROFILE POWERUP ACTIVATE
SET PROFILE DISCONNECT KEEP
SET BRIDGING OFF
SET 1 PERMANENT Off
SET 2 PERMANENT Off
SET 1 NUMBER 1234567
SET 2 NUMBER 1234567
TIMEOUT 1 THRESHOLD 20
TIMEOUT 2 THRESHOLD 48
TIMEOUT D DURATION 0
TIMEOUT 1 DURATION 0
TIMEOUT 2 DURATION 0
TIMEOUT 1 SOURCE BOTH
TIMEOUT 2 SOURCE BOTH Jeter@LasVegas.com
J.Fisher CCNA

 

[benedictheal]

Very many thanks for both the suggestions. For the first time I can imagine that there may be a way out! I'm working away from home this week, but will experiment as soon as I get back.
What a good resource Tek-Tips is!

Benedict