Cisco Systems (VISM) VISM Alarms, UNIX Snoop Trace Tool, Symptoms and Solutions

6-5
Cisco VISM Installation and Configuration Guide
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Chapter6 Troubleshooting Ti ps
VISM Alarms
VISM Alarms
Table 6 -1 describes VISM T1 and E1 card alarms.
Refer to T1.403 for DS1 and G.704 for E1 definitions of alarm states. Alarms are propagated to the
remote end over the ATM network in accordance with ATM specifications.
UNIX Snoop Trace Tool
Use the UNIX snoop trace tool to assist in diagnosing a problem. The snoop command ca n determine if
there is any activity between the VISM and the call agent. The following example shows the command
and a typical resulting terminal display:
snoop -x 42 -ta <ip address of CA> port <udp port of CA>
E.g snoop -x 42 -ta vismvsc1 port 2427
Symptoms and Solutions
This section includes possible solutions to the following possible symptoms:
•“VISM Card Did Not Become Active” section on page6-6
•“T1/E1 Configuration Mismatch” section on page 6-6
•“DSP Download Failure” section on page 6-7
•“VISM Front Card/Back Card Mismatch” section on page 6-8
•“Cannot Use the cc Command to Access a VISM Card” section on page 6-9
•“VISM Card Resets Intermittently” section on page 6-9
•“VISM Card Does Not Accept a Firmware Download” section on page6-9
•“Echo Is Heard on a Voice Call” section on page 6-9
•“VISM Card LEDs Are Not Lighted” section on page 6-9
Table6-1 VISM T1 and E1 Card Alarms
Error Alarm Type Down stream (ATM side) Up Stream (TDM side) Comments
Link Failure—receive
LOS1LOS1
1. LOS = Loss of service.
AIS2
2. AIS = Alarm indication signal.
RAI3
3. RAI = Remote alarm indicator.
RAI3 returned on the transmit
line.
Receive RAI3Yello w RAI 3None —
Receive LOF4
4. LOF = Loss of frame.
—AIS
2RAI3RAI3 returned on the transmit
line.
Receive AIS2AIS2AIS2RAI3RAI3 returned on the transmit
line.