Chapter 3: Troubleshooting Tools; Port Mirroring; Port Mirroring Commands; Port Statistics - Avaya WLAN 8100 Series Troubleshooting Manual

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Chapter 3: Troubleshooting Tools

These are the available troubleshooting tools and their applications.

WLAN 8100 series switches have a port mirroring feature that helps you to monitor and analyze

network traffic. The port mirroring feature supports both ingress (incoming traffic) and egress

(outgoing traffic) port mirroring. When port mirroring is enabled, the ingress or egress packets

of the mirrored (source) port are forwarded normally and a copy of the packets is sent from the

mirrored port to the mirroring (destination) port.

You can observe and analyze packet traffic at the mirroring port using a network analyzer. A

copy of the packet can be captured and analyzed. Unlike other methods that are used to

analyze packet traffic, the packet traffic is uninterrupted and packets flow normally through the

mirrored port.

You can use the port mirroring commands to assist in diagnostics and information gathering.

Use port statistics commands to display information on received and transmitted packets at

the ports. The ingress and egress counts occur at the MAC layer. Count updates occur once

every second.

The WLAN 8100 Series device is equipped with a time domain reflectometer (TDR). The TDR

provides a diagnostic capability to test connected cables for defects, such as short pin and pin

open. You can obtain TDR test results from the CLI or the WMS.

Avaya WLAN 8100 Troubleshooting Guide

August 2011

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