dialer idle-timeout query

[mulhollandm]

folks

i have an isdn user dialling into a bri interface and the line was timing out after a few minutes regardless of the fact there was activity on the line

as a result set a dialer idle-time 600 command on the interface and the line now stays up for 10 mins

the problem is that even though i have a continuous ping on the line it still sees it as inactive an terminates the line once 10 mins has been reached

1. why does the device think the line is inactive

2. how can i get it to stay up until the line

actually has been inactive for 10 mins ( or 2 or

5 etc)

thanks to anyone taking the time to reply

[Kevin Dorrell · Accepted solution]

Have you used a dialer-list to define interesting traffic, and then attached it to the dialer profile with a dialer-group command? If the dialer does not see interesting traffic, then it will idle out the call, regardless of who set up the call in the first place.

The simplest way to keep the line open is to put dialer-group 1 on the dialer interface, and dialer-list 1 protocol ip permit globally.

Monitor the show dialer from time to time to see how the timeouts are going.

Are you using dialer profiles or legacy? Could you post the configuration of your router, then we could discuss what might be the problem.

Kevin Dorrell

Luxembourg

[mulhollandm]

kevin

many thanks for your reply

here's a copy of my interface

interface BRI1/1

ip address 192.168.20.1 255.255.255.252

encapsulation ppp

dialer idle-timeout 600

isdn switch-type basic-net3

ppp authentication chap

my hope was to allow traffic from a pc to dial into this interface (the router doesn't dial out) so i wasn't sure if i needed the dialer group coomands

i'll try this out to see what happens

thanks again for your time and effort

most appreciated

[bmutcherson]

I experienced this same problem. I resolved it

by simply adding the following:

idle time out 300 either

as long as activity is going in either direction the call will not be dropped.

[Kevin Dorrell]

Doesn't that need to be interesting traffic though? I think you would still need the dialer group.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_command_reference_chapter09186a008008000e.html#wp1042890

"Only packets that match the dialer group reset the idle timer."

Kevin Dorrell

Luxembourg

[bmutcherson]

Yes Kevin, you do need the dialer list and dialer group configurations in place.