Chapter 4: Troubleshooting Tools; Port Mirroring - Avaya Virtual Services Platform 7000 Series Troubleshooting Manual

Chapter 4: Troubleshooting tools

This chapter describes protocols, utilities, and diagnostic tools that you can use with Avaya Virtual
Services Platform 7000 Series products to help you troubleshoot operational and configuration
issues. You can configure and display files, monitor and analyze traffic, capture and analyze data
packets, trace data flows, view and monitor statistics, and manage event messages.
Certain protocols and tools are tailored for troubleshooting specific Avaya Virtual Services Platform
7000 Series network topologies. Other tools are more general in their application and can be used
to diagnose and monitor ingress and egress traffic.

Port mirroring

With port mirroring, you can monitor and analyze ingress (incoming) and egress (outgoing) network
traffic. When you enable port mirroring, 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 designate a switch port to monitor traffic on any other specified switch ports (port based) or
to monitor traffic to or from any two specified addresses that the switch learned (address-based).
Although you can configure the switch to monitor both ingress and egress traffic, the following
restrictions apply for port-based and address-based port mirroring:
• For Xtx mode, you can only configure one port as the monitor port and one port as the mirrored
port (monitoring traffic transmitted by port X).
• For Xrx mode, you can only configure one port as the monitor port and one port as the mirrored
port (monitoring traffic received by port X).
• For XrxOrXtx mode, you can only configure one port as the monitor port and one port as the
mirrored port (monitoring traffic received by port X OR transmitted by port X).
• For XrxYtx mode, you can only configure one port as the monitor port, one port for mirroring
traffic received by port X and one port for mirroring traffic transmitted by port Y (monitoring
traffic received by port X AND transmitted by port Y).
• For XrxOrYtx mode, you can only configure one port as the monitor port, one port for mirroring
traffic received by port X and one port for mirroring traffic sent by port Y (monitoring traffic
received by port X OR transmitted by port Y).
• For XrxYtxOrYrxXtx mode, you can only configure one port as the monitor port, one port for
mirroring traffic received or sent by port X and one port for mirroring traffic sent or received by
July 2015
Comments on this document? infodev@avaya.com
Troubleshooting Avaya VSP 7000 Series
17