Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 806)

756 Brocade 6910 Ethernet Access Switch Configuration Guide
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Configuring MAC Address Mirroring
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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.