HP ProCurve 6120G/XG, Configuration Manual, Page: 496 / 662

Monitoring and Analyzing Switch Operation
Traffic Mirroring
Mirrored Traffic Destinations
Local Destinations
A local mirrored traffic destination is a port on the same switch as the source
of the traffic being mirrored.
C a u t i o n
Configuring a mirroring source switch with the destination and traffic selec­
tion criteria for a given mirroring session causes the switch to immediately
begin mirroring traffic to that destination.
Monitored Traffic Sources
You can configure mirroring for traffic entering or leaving the switch on:
■ Ports and static trunks: Provides the flexibility for mirroring on indi­
vidual ports, groups of ports, and/or static port trunks.
Criteria for Selecting Mirrored Traffic
On the monitored sources listed above, you can configure the following
criteria to select the traffic you want to mirror:
■ Direction of traffic movement (entering or leaving the switch, or both)
■
Source and/or destination MAC addresses in packet headers
Mirroring Sessions
A mirroring session consists of a mirroring source and destination. A mirroring
source can be a port or static-trunk list. For any session, the destination must
be a single (exit) port.
Multiple mirroring sessions can be mapped to the same exit port, which
provides flexibility in distributing hosts such as traffic analyzers or an IDS.
Mirroring sessions can have the same or a different destination. You can
configure an exit port on the local (source) switch as the destination in a
mirroring session. When configuring a mirroring destination, take into
account the following options:
■
Mirrored traffic belonging to different sessions can be directed to the
same destination or to different destinations.
■ You can reduce the risk of oversubscribing a single exit port by directing
traffic from different session sources to different exit ports.
■ You can segregate traffic by type, direction, or source.
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