Diagnosing Switch Problems Port Mirroring
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 34-11
mirrored port before being sent over the switch backplane to an NMS station. Therefore, management
frames destined for the RMON probe are first forwarded out of the mirrored port. After being received on
the mirrored port, copies of the frames are mirrored out of the mirroring port—the probe attached to the
mirroring port receives the management frames.
Port Mirroring Using External RMON Probe
OmniSwitch
Mirrored
Mirroring Port
NMS Workstation
RMON Probe
A. RMON probe frames sent from the mirroring port
B. ...appear to come from the mirrored port
when the NMS Workstation receives them.
OmniSwitch
Mirrored Port
Mirroring Port
NMS Workstation
RMON Probe
D. ...and port mirroring sends copies of the
Management frames to the mirroring port.
C. Management frames from the NMS Workstation are sent to the mirrored port....
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