Too Many Disconnection

tamer · ‎04-14-2003

Hi,

We had AS5800 and we have too many disconnection for the calls we try to check the reasons and we found that the unused modems always logging high calls failures as shown:

Mdm Time Succ Fail Succ Fail Out Dial Answer Pct

1/4/121 00:00:20 0 209 0 0 0 0 208 0%

1/4/122 00:00:20 0 204 0 0 0 0 203 0%

Using the show modem operations command

SGR-C81#sh modem operational-status 1/4/122

Shelf/Slot/SPE/Port -- 1/4/10/122

Service Type : Modem Service

Disconnect Reason Info : 0x7F06

Type (=3 ): Condition occurred during call setup

Class (=31 ): Requested by host

Reason (=6 ): network indicated disconnect

Connect Standard : invalid#255

TX/RX Bit Rate : 65535/65535

Connect Protocol : invalid#255

Compression : invalid#255

Call Timer : 18 secs

Link Signal Quality : 3

SNR : 255 dB

TX/RX Symbol Rate : 65535/65535

TX/RX Carrier Frequency : 65535/65535

TX/RX Trellis Coding : Invalid#255/Invalid#255

TX/RX Preemphasis Index : 255/255

TX/RX Constellation Shaping : Invalid#255/Invalid#255

TX/RX Nonlinear Encoding : Invalid#255/Invalid#255

TX/RX Precoding : Invalid#255/Invalid#255

TX/RX Xmit Level Reduction : 255/255 dBm

Receive Level : -1 dBm

Frequency Offset : -1 Hz

Phase Jitter Frequency : -1 Hz

Phase Jitter Level : 65535 degrees

Far End Echo Level : -1 dBm

Phase Roll : -1 degrees

Round Trip Delay : 65535 msecs

Total Retrains : 0

Self Test Error count : 0

EC Retransmission count : 0

EC packets transmitted/received OK : 0/0

EC packets (Received BAD/ABORTED) : 0

Characters transmitted/received : 0/0

PPP/SLIP packets transmitted/received : 0/0

PPP/SLIP packets received (BAD/ABORTED) : 0

General Portware Info : 20

V110/PIAFS frames received bad : 0

V110/PIAFS frames received ok : 0

V110/PIAFS frames transmitted : 0

V110/PIAFS sync lost : 0

SGR-C81#sh modem operational-status 1/4/123

Shelf/Slot/SPE/Port -- 1/4/10/123

Service Type : Modem Service

Disconnect Reason Info : 0x7F06

Type (=3 ): Condition occurred during call setup

Class (=31 ): Requested by host

Reason (=6 ): network indicated disconnect

Connect Standard : invalid#255

TX/RX Bit Rate : 65535/65535

Connect Protocol : invalid#255

Compression : invalid#255

Call Timer : 29 secs

Link Signal Quality : 4

SNR : 255 dB

TX/RX Symbol Rate : 65535/65535

TX/RX Carrier Frequency : 65535/65535

TX/RX Trellis Coding : Invalid#255/Invalid#255

TX/RX Preemphasis Index : 255/255

TX/RX Constellation Shaping : Invalid#255/Invalid#255

TX/RX Nonlinear Encoding : Invalid#255/Invalid#255

TX/RX Precoding : Invalid#255/Invalid#255

TX/RX Xmit Level Reduction : 255/255 dBm

Receive Level : -1 dBm

Frequency Offset : -1 Hz

Phase Jitter Frequency : -1 Hz

Phase Jitter Level : 65535 degrees

Far End Echo Level : -1 dBm

Phase Roll : -1 degrees

Round Trip Delay : 65535 msecs

Total Retrains : 0

Self Test Error count : 0

EC Retransmission count : 0

EC packets transmitted/received OK : 0/0

EC packets (Received BAD/ABORTED) : 0

Characters transmitted/received : 0/0

PPP/SLIP packets transmitted/received : 0/0

PPP/SLIP packets received (BAD/ABORTED) : 0

General Portware Info : 25

V110/PIAFS frames received bad : 0

V110/PIAFS frames received ok : 0

V110/PIAFS frames transmitted : 0

V110/PIAFS sync lost : 0

can any body explain to me the reason for such disconnection, the success rate of the AS is 15% as shown

Avg Hold Incoming calls Outgoing calls Busied Failed No Succ

Time Succ Fail Avail Succ Fail Avail Out Dial Ans Pct.

00:04:18 23556 137299 1057 1 10 1057 0 6133160 15%

rjackson · ‎04-14-2003

First guess would be that the modems are failing in there negotiations. Is it happening on the same modems over and over while some consistantly work? Then check you modem configs. If its moving with the user; same user has the problem and never connects, check their modem config.

makchitale · ‎04-14-2003

We see all the calls on these modems fails, all correspond to "No answer".

The disconnect reason 0x7F06 indicates a condition during call-setup, Basically, this is a "dirty" disconnect during Layer I or Layer II training.

Also we see that these modem have failed in pairs (1 DSP for 2 modems)....do we see more modem that fail in pairs or a complete blade fail.

What IOS & modem portware do we have / sh ver / sh spe ver or sh modem ver.

Thanks, Mak

tamer · ‎04-15-2003

Thanx for ur replying, the IOS version is as follows :

IOS (tm) 5800 Software (C5800-P4-M), Version 12.2(6), RELEASE SOFTWARE (fc2)

and the portware is 2.7.3.0

and about the DSP too many DSP suffers the connection and no specific modems as shown :

1/4/121 00:00:20 0 254 0 0 0 0 253 0%

1/4/122 00:00:20 0 249 0 0 0 0 248 0%

1/4/123 00:00:20 0 257 0 0 0 0 257 0%

1/5/03 00:00:20 0 245 0 0 0 0 245 0%

1/5/04 00:00:20 0 259 0 0 0 0 258 0%

1/5/05 00:00:20 0 248 0 0 0 0 247 0%

1/5/06 00:00:20 0 254 0 0 0 0 254 0%

1/5/07 00:00:20 0 246 0 0 0 0 246 0%

1/5/69 00:00:20 0 250 0 0 0 0 250 0%

1/5/70 00:00:20 0 241 0 0 0 0 240 0%

1/5/71 00:00:20 0 233 0 0 0 0 233 0%

1/5/72 00:00:20 0 245 0 0 0 0 245 0%

1/5/73 00:00:20 0 254 0 0 0 0 254 0%

1/5/74 00:00:20 0 258 0 0 0 0 258 0%

1/6/121 00:00:20 0 254 0 0 0 0 254 0%

1/6/122 00:00:20 0 253 0 0 0 0 253 0%

1/6/123 00:00:20 1 253 0 0 0 0 253 0%

1/6/124 00:00:20 0 254 0 0 0 0 252 0%

1/6/125 00:00:20 0 242 0 0 0 0 242 0%

regards,

makchitale · ‎04-15-2003

A complete hex (group of 6 modems) seems to have all calls failing on them...

1)Try reflashing the mica portware on them & see if they take any successful call...since this is 12.2.6 will need to use the SPE commands for recovery.

conf term

spe x/y/z a/b/c

firmware location xxxxxx

2)It's worth moving to 2.7.4.0 portware.

3)If the problem still appears on the same set of modems then there could be an hardware issue.

Thanks, Mak.

mmt · ‎01-30-2004

I think it is a bug. Here is my show modem summary, Although my 5800 is answering calls just fine. I am running 12.2.19a:

as-58#sh modem summary

Avg Hold Incoming calls Outgoing calls Busied Failed No Succ

Time Succ Fail Avail Succ Fail Avail Out Dial Ans Pct.

00:18:43 26 7348 232 0 2 232 0 0 929 0%