04-13-2009 09:16 AM - edited 03-15-2019 05:26 PM
I keep getting this when I do 'sh isdn status' on my AS5300. The only thing that fixes it that I've found is a reload of the entire system. What are some debugs that I can run to see what's going on?
04-13-2009 09:21 AM
sh controllers T1
debug isdn q921
HTH
java
if this helps, please rate
04-13-2009 10:01 AM
They went down again and I get this:
%CONTROLLER-5-LOOPSTATUS: Controller T1 3, PAYLOAD loopback request from external network
'show controller T1 3' gives me:
T1 3 is up. (Payload Loop by Remote)
Applique type is Channelized T1
Cablelength is long gain36 0db
Description:
Receiver has no alarms.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info of slot 0: HW: 4, PLD Rev: 0
Manufacture Cookie Info:
EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x42,
Board Hardware Version 1.32, Item Number 73-2217-05,
Board Revision B16, Serial Number 09354209,
PLD/ISP Version 0.0, Manufacture Date 19-Jun-1998.
Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
Data in current interval (256 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
23 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
23 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 1:
83 Line Code Violations, 551 Path Code Violations
41 Slip Secs, 18 Fr Loss Secs, 2 Line Err Secs, 1 Degraded Mins
43 Errored Secs, 0 Bursty Err Secs, 10 Severely Err Secs, 18 Unavail Secs
Data in Interval 2:
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 3:
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 4:
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 5:
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 6:
6 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 6 15 minute intervals):
89 Line Code Violations, 551 Path Code Violations,
41 Slip Secs, 18 Fr Loss Secs, 3 Line Err Secs, 1 Degraded Mins,
43 Errored Secs, 0 Bursty Err Secs, 10 Severely Err Secs, 18 Unavail Secs
I can't find much on google about my situation :(
04-13-2009 10:53 AM
Does "shut / no shut" and controller T3 fixes it ?
After how long it happens ?
Which exact IOS are you running ?
04-13-2009 11:08 AM
I can't seem to recreate it yet so I can't really put a time to it. Right now it's been up for a couple hours. But earlier it happened about 10 minutes after I 'reload'. My IOS version is:
IOS (tm) 5300 Software (C5300-JK9S-M), Version 12.3(26), RELEASE SOFTWARE (fc2)
Another thing I'd like to point out is that the particular controllers that go down are connected to a proprietary conference bridge. A shut/no shut doesn't bring it up either.
interface Serial3:23
no ip address
encapsulation ppp
trunk-group BRIDGE 1
isdn switch-type primary-ni
isdn protocol-emulate network
isdn incoming-voice modem
no fair-queue
no cdp enable
end
controller T1 3
framing esf
linecode b8zs
pri-group timeslots 1-24
Those are the configurations I have.
04-13-2009 11:13 AM
Problem seems to be somewhat with the DS3 circuit, of course it's an anomaly that reloading fixes it. You can try upgrading IOS, latest 12.3 for example.
04-13-2009 01:55 PM
I am connected to the bridge with a T1 xover cable... no DS3 here. Also, AFAIK I'm on the latest IOS supported by the AS5300... 12.3(26).
Here's something interesting:
Apr 13 16:38:43 CDT: ISDN Se2:23 Q921: Net TX -> SABMEp sapi=0 tei=0
Apr 13 16:38:44 CDT: ISDN Se2:23 Q921: Net TX -> SABMEp sapi=0 tei=0
Apr 13 16:38:45 CDT: ISDN Se2:23 Q921: Net TX -> SABMEp sapi=0 tei=0
Apr 13 16:38:46 CDT: ISDN Se2:23 Q921: Net TX -> SABMEp sapi=0 tei=0
from http://www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a00801509d7.shtml it says that if the router receives these messages it will Tx a UAf. Does that hold true for the opposite? If the router Tx a SABMEp should it Rx a UAf from my conference bridge?
04-13-2009 01:58 PM
Yes, a sabme elicits uaf. Is the bridge is providing clock ? Probably it is not, from the show controller something is wrong with that.
04-13-2009 02:11 PM
my guess is that the bridge doesn't provide the clock. That's why it's set to 'clock source internal'. It looks like this is the problem... I don't Rx a UAf and just keep Tx'ing SABMEp messages over and over.
I have tried to change it to 'clock source line primary' with no joy. How do I reset layer 2? When I do a shut/no shut on the interface it looks like it takes down layer 3 only.
04-13-2009 02:17 PM
What could be happening, is that the bridge sees too many errors and shuts down his port temporarily.
Shut under interface should bring layer 2 and 3 down. Shut under controller sets RAI bit, that is a clean way to bring down layer 1.
04-13-2009 02:59 PM
I can tell that the conference bridge hasn't shutdown the port. It even tries to use it but can't because "Requested circuit/channel not available". I'm going to investigate why the conference bridge doesn't reply to my SABME messages... that has to be the reason it won't get to MULTIPLE_FRAME_ESTABLISHED.
If you have any other suggestions it would be greatly appreciated.
04-13-2009 03:13 PM
I also receive this:
Apr 13 18:11:11 CDT: ISDN Se2:23 Q921: Net RX <- RRp sapi=0 tei=0 nr=4
from the conference bridge. So, it seems that it's sending something... just not the UAf. Does this indicate anything that you know of?
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