03-17-2003 05:13 AM - edited 03-02-2019 05:55 AM
I have a 3640, IOS 12.2.12a and every now and then I get a user calling me for help as they are being dialled back continueously every minute even when there is no PC attached to the phone. The dialer shows a huge number of failed attempts. The only way I can find to stop this is to shut the interface and later reload the router.
This is very frustrating, does anyone have any ideas?
Thanks
03-17-2003 08:54 AM
I assume that 3640 is calling back to the users right. We need to see the running config from 3640 router. Also you can turn on "debug dialer" to see which traffic is triggring the line for callout. So turn on following debug and post it here with running config.
debug dialer
debug isdn q931
03-18-2003 01:04 AM
Here are the relevant parts of the config and debugs. We now have 3 users with this problem and the only way to stop it is to shut the Async port, but as soon as I open it then it starts dialing again. The only way to stop it semi permanently is to reload the router.
It looks like broadcast traffic from the loopback, but why does it only happen now and then?
interface Loopback1
ip address 196.5.65.254 255.255.255.0
interface Serial2/0:15
description ##### CONTROL CHANNEL FOR PRIMARY RATE ISDN #####
no ip address
encapsulation ppp
dialer rotary-group 1
isdn switch-type primary-net5
isdn incoming-voice modem
isdn sending-complete
no cdp enable
!
interface Group-Async1
description ##### INTERFACE FOR ASYNC DIAL-IN USERS #####
ip unnumbered Loopback1
encapsulation ppp
dialer in-band
dialer idle-timeout 1800
dialer-group 1
async dynamic routing
async mode dedicated
peer default ip address pool ASYNC
ppp callback permit
ppp authentication ms-chap pap
group-range 97 108
!
interface Dialer1
description ##### INTERFACE FOR ISDN DIAL-IN USERS #####
ip unnumbered Loopback1
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer in-band
dialer idle-timeout 1800
dialer-group 1
peer default ip address pool ISDN
no cdp enable
ppp callback permit
ppp authentication ms-chap pap
ppp multilink
multilink max-links 2
multilink min-links 1
multilink load-threshold 150 either
dialer-list 1 protocol ip permit
line 97 108
flush-at-activation
script dialer micaout
script modem-off-hook offhook
modem InOut
modem autoconfigure type mica
transport input telnet
autoselect during-login
autoselect ppp
results of:
debug dialer
debug isdn q931
rzaeldcsaDMZ#sh dialer int as106
As106 - dialer type = IN-BAND ASYNC NO-PARITY
Idle timer (1800 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is call pending
Dial reason: ip (s=196.5.65.254, d=255.255.255.255)
Dial String Successes Failures Last DNIS Last status
0,7482571 1 1283 00:00:45 failed
rzaeldcsaDMZ#
rzaeldcsaDMZ#
rzaeldcsaDMZ#
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: CHAT106: Chat script micaout finished, status = Connection timed out; remo
te host not responding
1w0d: As106 DDR: disconnecting call
1w0d: ISDN Se2/0:15: TX -> DISCONNECT pd = 8 callref = 0x06AA
1w0d: Cause i = 0x8090 - Normal call clearing
1w0d: ISDN Se2/0:15: RX <- RELEASE pd = 8 callref = 0x86AA
1w0d: ISDN Se2/0:15: TX -> RELEASE_COMP pd = 8 callref = 0x06AA
1w0d: As106 DDR: re-enable timeout
1w0d: As106 DDR: Dialing cause ip (s=196.5.65.254, d=255.255.255.255)
1w0d: As106 DDR: Attempting to dial 0,7482571
1w0d: CHAT106: Attempting async line dialer script
1w0d: CHAT106: Dialing using Modem script: micaout & System script: none
1w0d: CHAT106: process started
1w0d: CHAT106: Asserting DTR
1w0d: CHAT106: Chat script micaout started
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: Di2 DDR: Cannot place call, no dialer string set
1w0d: ISDN Se2/0:15: TX -> SETUP pd = 8 callref = 0x06AB
1w0d: Sending Complete
1w0d: Bearer Capability i = 0x8090A3
1w0d: Channel ID i = 0xA9839F
1w0d: Called Party Number i = 0x81, '07482571', Plan:ISDN, Type:Unknown
1w0d: ISDN Se2/0:15: RX <- CALL_PROC pd = 8 callref = 0x86AB
1w0d: Channel ID i = 0xA9839F
1w0d: ISDN Se2/0:15: RX <- ALERTING pd = 8 callref = 0x86AB
1w0d: Progress Ind i = 0x8088 - In-band info or appropriate now availabl
e
1w0d: Progress Ind i = 0x8282 - Destination address is non-ISDN
rzaeldcsaDMZ#
rzaeldcsaDMZ#
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