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Troubleshooting Tools; Introduction; Port Mirroring - HP 438031-B21 - 1:10Gb Ethernet BL-c Switch Application Manual

Hp 1:10gb ethernet bl-c switch for c-class bladesystem application guide.
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Troubleshooting tools


This appendix discusses some tools to help you use the Port Mirroring feature to troubleshoot common
network problems on the switch.

Port Mirroring

The Port Mirroring feature on the switch is very useful for troubleshooting any connection-oriented
problem. Any traffic in or out of one or more ports can be mirrored to a single monitoring port to which a
network monitor can be attached.
Port Mirroring can be used as a troubleshooting tool or to enhance the security of your network. For
example, an Intrusion Detection Service (IDS) server can be connected to the monitor port to detect
intruders attacking the network.
As shown in the following figure, port 19 is monitoring ingress traffic (traffic entering the switch) on
port 24 and egress traffic (traffic leaving the switch) on port 1. You can attach a device to port 19 to
monitor the traffic on ports 24 and 1.
Figure 28
Port Mirroring
This figure shows two mirrored ports monitored by a single port. Similarly, you can have one mirrored
port to one monitored port, or many mirrored ports to one monitored port. The switch does not support a
single port being monitored by multiple ports because it supports only one monitored port configured at a
Troubleshooting tools


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