12-29-2008 12:48 PM - edited 03-04-2019 03:16 AM
Hi,
There is a 1841 router connected through a primary Metro Ethernet Link 4 Mbps to Internet and a backup ISDN Link through a BRI interface. I have configured a default route pointing Fast Ethernet 0/1 (ME Link) which is tracked with an IP SLA (icmp protocol). When the object is down then a second floating static route with AD 254 is entered in routing table and a call is initiated through the BRI interface. When the object comes up the BRI B channels stay active and the call is not terminated. I have configured the idle-timeout to 100 sec.
Can anyone help to investigate the reason for that behavior?
Thanks in advance!
12-29-2008 01:09 PM
Hello John,
have you defined a dialer-list ?
it helps to define what is the interesting traffic that reset the idle-timeout timer a too broad definition will cause the link to stay up.
If you like you can post the interesting parts of your configuration
Hope to help
Giuseppe
12-29-2008 11:39 PM
interface BRI0/1/0
description *** Link to Secondary Internet Gateway ***
ip address negotiated
ip access-group Internet_Inbound in
ip inspect WEB out
encapsulation ppp
dialer idle-timeout 100 either
dialer string xxxxxxxxxx
dialer load-threshold 1 outbound
dialer-group 1
isdn switch-type basic-net3
isdn point-to-point-setup
no cdp enable
ppp authentication pap callin
ppp pap sent-username zzzzzzzz password yyyyyyyy
ppp multilink
end
dialer-list 1 protocol ip permit
I will try to define the interesting traffic better than now...
Thanks
12-30-2008 01:56 AM
Hi
You should also consider the line
dialer idle-timeout 100 either
By default, outbound traffic will reset the dialer idle timer. Adding the either keyword causes both inbound and outbound traffic to reset the timer
this explanation is taken from
http://www.cisco.com/en/US/docs/ios/12_2/dial/configuration/guide/dafiprof.html
Maybe it's traffic coming from other side that is resetting the timer.
/Mikael
12-30-2008 01:34 PM
I will try that.
Thanks
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