C
HAPTER
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| Address Table Settings
Configuring MAC Address Mirroring
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Figure 101: Clearing Entries in the Dynamic MAC Address Table
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 1017
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 "Spanning Tree
Algorithm" on page 237).
◆ When mirroring VLAN traffic (see "Configuring VLAN Mirroring" on
page 222) 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 154).
◆ 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.
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