Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
438
Views
0
Helpful
3
Replies

1st bri channel goes up and down

ja1064
Level 1
Level 1

‎08-13-2003 11:20 AM - edited ‎03-02-2019 09:34 AM

i have a 2610 dialing to another 2610 that has been working for months. Nobody else touches these things - the config has not changed.

a couple of days ago the 1st channel started dropping. It will connect for a while (500-some seconds) and then disconnect.

What debug(s) are most appropriate

Labels:
0 Helpful
3 Replies 3

net-guru
Level 1
Level 1

‎08-13-2003 12:12 PM

The best debug options for ISDN are:

debug isdn q931 or debug isdn q921

Given that the line holds for so long there is no point debugging the negotiation or authorisation because they obviously succeed.

Debugging isdn q921 will allow you to look at whats happening on layer 2. If, say for instance, there was a circuit fault, or faulty exchange device you would see the presence of SABMEp being transmitted. These packets effectively tell the signal channel (d-channel) to reset due a fault. This will cause the circuit to momentarily go down and come back up.

0 Helpful

ja1064
Level 1
Level 1
In response to net-guru

‎08-13-2003 01:23 PM

here is q931. When i captured this only the '2073'number was 'active'.

Aug 13 17:20:10.552: ISDN BR0/0: TX -> SETUP pd = 8 callref = 0x5B

Aug 13 17:20:10.552: Bearer Capability i = 0x8890

Aug 13 17:20:10.552: Channel ID i = 0x83

Aug 13 17:20:10.552: Called Party Number i = 0x80, '2072', Plan:Unknown, Type:Unknown

Aug 13 17:20:10.736: ISDN BR0/0: RX <- CALL_PROC pd = 8 callref = 0xDB

Aug 13 17:20:10.736: Channel ID i = 0x89

Aug 13 17:20:10.736: Locking Shift to Codeset 5

Aug 13 17:20:10.736: Codeset 5 IE 0x2A i = 0x808804, '2072', 0x800110800114800114800114

Aug 13 17:20:13.268: ISDN BR0/0: RX <- PROGRESS pd = 8 callref = 0xDB

Aug 13 17:20:13.268: Progress Ind i = 0xC28A - Delay in response at called interface

Aug 13 17:20:13.268: Signal i = 0x01 - Ring back tone on

Aug 13 17:20:13.276: ISDN BR0/0: HOST_PROGRESS: Got IE of INBAND or Not End-To-End

Aug 13 17:20:15.821: ISDN BR0/0: RX <- DISCONNECT pd = 8 callref = 0xDB

Aug 13 17:20:15.821: Cause i = 0x8292 - No user responding

Aug 13 17:20:15.821: Signal i = 0x01 - Ring back tone on

Aug 13 17:20:15.833: ISDN BR0/0: TX -> RELEASE pd = 8 callref = 0x5B

Aug 13 17:20:15.853: ISDN BR0/0: TX -> SETUP pd = 8 callref = 0x5C

Aug 13 17:20:15.857: Bearer Capability i = 0x8890

Aug 13 17:20:15.857: Channel ID i = 0x83

Aug 13 17:20:15.857: Called Party Number i = 0x80, '2073', Plan:Unknown, Type:Unknown

Aug 13 17:20:15.917: ISDN BR0/0: RX <- RELEASE_COMP pd = 8 callref = 0xDB

Aug 13 17:20:15.917: Signal i = 0x3F - Tones off

Aug 13 17:20:16.033: ISDN BR0/0: RX <- CALL_PROC pd = 8 callref = 0xDC

Aug 13 17:20:16.037: Channel ID i = 0x89

Aug 13 17:20:16.037: Locking Shift to Codeset 5

Aug 13 17:20:16.037: Codeset 5 IE 0x2A i = 0x80830A, '6102512073', 0x80010A800114800114800114

Aug 13 17:20:16.069: ISDN BR0/0: RX <- DISCONNECT pd = 8 callref = 0xDC

Aug 13 17:20:16.069: Cause i = 0x8291 - User busy

Aug 13 17:20:16.069: Signal i = 0x04 - Busy tone on

Aug 13 17:20:16.081: ISDN BR0/0: TX -> RELEASE pd = 8 callref = 0x5C

Aug 13 17:20:16.165: ISDN BR0/0: RX <- RELEASE_COMP pd = 8 callref = 0xDC

Aug 13 17:20:16.165: Signal i = 0x3F - Tones off

Aug 13 17:20:40.602: ISDN BR0/0: TX -> SETUP pd = 8 callref = 0x5D

Aug 13 17:20:40.602: Bearer Capability i = 0x8890

Aug 13 17:20:40.602: Channel ID i = 0x83

Aug 13 17:20:40.602: Called Party Number i = 0x80, '2072', Plan:Unknown, Type:Unknown

Aug 13 17:20:40.830: ISDN BR0/0: RX <- CALL_PROC pd = 8 callref = 0xDD

Aug 13 17:20:40.830: Channel ID i = 0x89

Aug 13 17:20:40.834: Locking Shift to Codeset 5

Aug 13 17:20:40.834: Codeset 5 IE 0x2A i = 0x808804, '2072', 0x800110800114800114800114

Aug 13 17:20:43.318: ISDN BR0/0: RX <- PROGRESS pd = 8 callref = 0xDD

Aug 13 17:20:43.322: Progress Ind i = 0xC28A - Delay in response at called interface

Aug 13 17:20:43.322: Signal i = 0x01 - Ring back tone on

Aug 13 17:20:43.326: ISDN BR0/0: HOST_PROGRESS: Got IE of INBAND or Not End-To-End

Aug 13 17:20:45.871: ISDN BR0/0: RX <- DISCONNECT pd = 8 callref = 0xDD

Aug 13 17:20:45.871: Cause i = 0x8292 - No user responding

Aug 13 17:20:45.871: Signal i = 0x01 - Ring back tone on

Aug 13 17:20:45.883: ISDN BR0/0: TX -> RELEASE pd = 8 callref = 0x5D

Aug 13 17:20:45.903: ISDN BR0/0: TX -> SETUP pd = 8 callref = 0x5E

Aug 13 17:20:45.907: Bearer Capability i = 0x8890

Aug 13 17:20:45.907: Channel ID i = 0x83

Aug 13 17:20:45.907: Called Party Number i = 0x80, '2073', Plan:Unknown, Type:Unknown

Aug 13 17:20:45.967: ISDN BR0/0: RX <- RELEASE_COMP pd = 8 callref = 0xDD

Aug 13 17:20:45.967: Signal i = 0x3F - Tones off

Aug 13 17:20:46.083: ISDN BR0/0: RX <- CALL_PROC pd = 8 callref = 0xDE

Aug 13 17:20:46.087: Channel ID i = 0x89

Aug 13 17:20:46.087: Locking Shift to Codeset 5

Aug 13 17:20:46.087: Codeset 5 IE 0x2A i = 0x80830A, '6102512073', 0x80010A800114800114800114

Aug 13 17:20:46.119: ISDN BR0/0: RX <- DISCONNECT pd = 8 callref = 0xDE

Aug 13 17:20:46.119: Cause i = 0x8291 - User busy

Aug 13 17:20:46.123: Signal i = 0x04 - Busy tone on

Aug 13 17:20:46.131: ISDN BR0/0: TX -> RELEASE pd = 8 callref = 0x5E

Aug 13 17:20:46.219: ISDN BR0/0: RX <- RELEASE_COMP pd = 8 callref = 0xDE

0 Helpful

sachinraja
Level 9
Level 9
In response to ja1064

‎08-26-2003 02:39 AM

This might be a problem with the DOT or the ISP..

Can you give us the outputs of debug ppp negotiation and debug ppp authentication to exatly see the issue ?

0 Helpful
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Customers Also Viewed These Support Documents