09-23-2004 03:19 AM - edited 03-02-2019 06:42 PM
Hi,
I'm facing a problem with ISDN DDR on 1700 series routers, whenever there is an interesting traffic also the isdn is not triggering a call. Once the router is rebooted it starts working fine. Can somebody give some inputs on this.
IOS being used is - c1700-k9o3sy7-mz.123-1a.bin
09-23-2004 03:46 AM
run debug dialer and debug isdn q931 then send some trafic to see if the link try's to dialip.
Also do a show isdn status to see if the ISDN line is ok aswell as show isdn active to see if any calls are in progress
if it is dialing but failing run debug on chap
could you post up the router config for me to have a look at.
Cheers
Kev
09-23-2004 04:16 AM
Hi kev,
ISDN line is ok, there is no problem and whenever I send some traffic (which is marked as interesting in the debug output) it not dialing up, show isdn active/show isdn history nothing is there its blank.
Also posted the output of debug dialer/ isdn q931.
Sep 23 17:27:18.991: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:27:19.159: BR1/0 DDR: cdp, 292 bytes, outgoing uninteresting (no dialer-group
defined)
Sep 23 17:27:19.159: BR1/0 DDR: Packet sent directly to pool or rotary group member : d
ropping packet.
Sep 23 17:27:19.159: Di1 DDR: cdp, 293 bytes, outgoing uninteresting (no lis Total A
llocated ISDN CCBs = 0
Sep 23 17:27:28.991: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:27:38.992: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:27:48.993: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:27:58.994: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:28:08.994: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:28:11.975: Di1 DDR: ip (s=10.94.255.13, d=10.94.255.1), 100 bytes, outgoing i
nteresting (ip PERMIT).
Sep 23 17:28:13.975: Di1 DDR: ip (s=10.94.255.13, d=10.94.255.1), 100 bytes, outgoing i
nteresting (ip PERMIT).
Sep 23 17:28:15.978: Di1 DDR: ip (s=10.94.255.13, d=10.94.255.1), 100 bytes, outgoing i
nteresting (ip PERMIT).
Sep 23 17:28:17.977: Di1 DDR: ip (s=10.94.255.13, d=10.94.255.1), 100 bytes, outgoing i
nteresting (ip PERMIT).
Sep 23 17:28:18.995: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:28:19.187: BR1/0 DDR: cdp, 292 bytes, outgoing uninteresting (no dialer-group
defined)
Sep 23 17:28:19.187: BR1/0 DDR: Packet sent directly to pool or rotary group member : d
ropping packet.
Sep 23 17:28:19.187: Di1 DDR: cdp, 293 bytes, outgoing uninteresting (no list matched)
Sep 23 17:28:19.981: Di1 DDR: ip (s=10.94.255.13, d=10.94.255.1), 100 bytes, outgoing i
nteresting (ip PERMIT).
Success rate is 0 percent (0/5)
Sep 23 17:28:28.995: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:28:38.996: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:28:48.996: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Sep 23 17:28:58.997: Di1 DDR: ip (s=10.94.255.13, d=224.0.0.5), 76 bytes, outgoing inte
resting (ip PERMIT)
Output of show isdn active
--------------------------------------------------------------------------------
ISDN ACTIVE CALLS
--------------------------------------------------------------------------------
Call Calling Called Remote Seconds Seconds Seconds Charges
Type Number Number Name Used Left Idle Units/Currency
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Router Config - (Posted only releated to ISDN due to security reasons)
interface BRI1/0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
interface Dialer1
ip address 10.94.255.13 255.255.255.0
encapsulation ppp
dialer pool 1
dialer string 642240654
dialer-group 1
ppp authentication chap
dialer-list 1 protocol ip permit
Regards
Vijay
09-23-2004 04:28 AM
Hi,
What do you see when you run "debug isdn q921"
Rgds
Paddy
09-23-2004 04:37 AM
One of the things I notice in the debug is the error message pointing out that while there is a dialer group on the virtual interface Dialer1 there is not any dialer group on the physical intereface BRI1/0. I would suggest that you also configure dialer-group 1 on interface BRI1/0 and see what difference that makes.
HTH
Rick
09-23-2004 04:56 AM
You shouldn't need a dialer-group on the physical interface. The physical interface shouldn't know anything about IP; it is just a channel for the dialer interface to use.
Looking closer at the debug, you find this is so. The uninteresting traffic that it is complaining about is CDP, which is not IP, and would not be interesting traffic anyway. What surprises me is that CDP is active on a physical BRI at all. I would kill it with "no cdp enable" on the BRI.
Anyway, I thought CDP was disabled on dialup interfaces by default. But it appears I was wrong there.
Kevin Dorrell
Luxembourg
09-23-2004 08:13 AM
Vijay,
Sounds like a bug especially if it works after reload. Can you move the configuration from the dialer 1 interface to the Bri 1/0 interface.
int bri 1/0
ip add x.x.x.x
encap ppp
dialer string xxxx
ppp authen chap
dialer-group 1
Daniel
09-30-2004 08:22 AM
Try adding a ip route statement for exmaple
ip route 172.22.0.0 255.255.0.0 172.22.80.0
ip route 172.22.80.0 255.255.255.0 Dialer1
!
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