8 overview: port mirroring, Overview: port mirroring -42 – Enterasys Networks 1G58x-09 User Manual
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Port Configuration Command Set
Overview: Port Mirroring
4-42
Matrix E1 Series (1G58x-09 and 1H582-xx) Configuration Guide
4.3.8
Overview: Port Mirroring
The Matrix E1 allows you to mirror the traffic being switched on one or more ports for the purposes
of network traffic analysis and connection assurance. When port mirroring is enabled, one port
becomes a monitor port for other ports within the device. When configuring port mirroring on this
device, note that
•
A given source port may only be mirrored to one target port. However, multiple source ports
may be mirrored to the same target port.
•
Only one port per port grouping can be designated as a source port. For more information on port
grouping designations, refer to
.
•
A maximum of 12 source/target port pairs may be configured.
•
Traffic mirrored includes both received and transmitted packets.
•
Unknown protocol packets and broadcast packets can be forwarded out the monitor port when
mirroring is enabled.
•
None of the ports in a trunk or LAG should be configured as a mirror source port or mirror target
port. If a port with an active LACP link is configured as a mirror source or target port, the LACP
link will be brought down. Note that all eight ports in the same port group are affected—once
one port in the group is mirrored, any other LACP ports in the same group will be removed from
the trunk. For more information about link aggregation, refer to
.
For details on how to specify port designation in the CLI syntax, refer to
CAUTION: Port mirroring configuration should be performed only by personnel who are
knowledgeable about the effects of port mirroring and its impact on network operation.