Configuring mac address mirroring, Configuring mac, Mac address mirroring – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual

Page 806

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Brocade 6910 Ethernet Access Switch Configuration Guide

53-1002581-01

Configuring MAC Address Mirroring

35

Configuring MAC Address Mirroring

Use the MAC Address > Mirror (Add) page to mirror traffic matching a specified source address
from any port on the switch to a target port for real-time analysis. You can then attach a logic
analyzer or RMON probe to the target port and study the traffic crossing the source port in a
completely unobtrusive manner.

CLI References

•

“Local Port Mirroring Commands”

on page 301

Command Usage

•

When mirroring traffic from a MAC address, ingress traffic with the specified source address
entering any port in the switch, other than the target port, will be mirrored to the destination
port.

•

All mirror sessions must share the same destination port.

•

Spanning Tree BPDU packets are not mirrored to the target port.

•

When mirroring port traffic, the target port must be included in the same VLAN as the source
port when using MSTP (see

“”

on page 759).

•

When mirroring VLAN traffic (see

“Configuring VLAN Mirroring”

on page 746) or packets based

on a source MAC address, the target port cannot be set to the same target ports as that used
for port mirroring (see

“Configuring Local Port Mirroring”

on page 679).

•

When traffic matches the rules for both port mirroring, and for mirroring of VLAN traffic or
packets based on a MAC address, the matching packets will not be sent to target port
specified for port mirroring.

Parameters

These parameters are displayed:

•

Source MAC – MAC address in the form of xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx.

•

Target Port – The port that will mirror the traffic from the source port. (Range: 1-12)

Interface

To mirror packets based on a MAC address:

1. Click MAC Address, Mirror.

2. Select Add from the Action list.

3. Specify the source MAC address and destination port.

4. Click Apply.

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