Troubleshooting guide

Troubleshooting Guide
206
Reading E2T Card Statistics
When troubleshooting network issues, you can use the e2tshow command to read statistics
for E2T cards.
1. Connect to the E2T card:
- For LX or 250/700-user controllers, connect a TAPI cable.
- For CX, CXi, MX, or 100-user controllers, connect directly to the maintenance port.
- For MXe/MXe Server, telnet to port 2007.
2. Enter e2tshow.
3. Check the output When reading the output of e2tshow, a large quantity of errors in the
following categories indicates a network issue:
- RTP Seq total missing pkts
- RTP Seq Packets out of order
- RTP Seq Pkts duplicate SEQ
- Jitter Underflow
- Jitter Overflow
The following figure shows a sample result of the e2tshow command:
r2trace off Turns OFF any r2trace command
Note: For 250/700 user controllers, you will need a TAPI cable to perform this procedure.
(RS232 serial cable with a PS2 connector on one end and a DB9 connector at the other.)
Note: E2T statistics accumulate over time and do not clear until the system is reset or
the e2tclear command is entered. Reading the data without knowing when collection
was started may be misleading. We recommend that you clear the statistics first (using
e2tclear) to set a reference mark and then monitor it at regular intervals.
Table 70: R2 card trace commands
Command Purpose