Reference Guide

Congure source and destination port, and trac direction
OS10(conf-mon-local-1)# source interface ethernet 1/1/7-1/1/8 rx
OS10(conf-mon-local-1)# destination interface ethernet1/1/1
OS10(conf-mon-local-1)# no shut
View congured monitoring sessions
In the State eld, true indicates that the port is enabled. In the Reason eld, Is UP indicates that hardware resources are allocated.
OS10# show monitor session all
S.Id Source Destination Dir SrcIP DstIP DSCP TTL State Reason
----------------------------------------------------------------------
1 ethernet1/1/7 ethernet1/1/1 rx N/A N/A N/A N/A true Is UP
Remote port monitoring
Remote port monitoring allows you to monitor ingress and/or egress trac on multiple source ports of multiple devices and forward the
monitored trac to multiple destination ports on dierent remote devices. Remote port monitoring helps network administrators monitor
and analyze trac to troubleshoot network problems in a time-saving and ecient way.
In a remote port monitoring session, monitored trac is tagged with a VLAN ID and switched on a user-dened, non-routable L2 VLAN.
The VLAN is reserved in the network to carry only monitored trac, which is forwarded on all egress ports of the VLAN. You must
congure each intermediate switch that participates in the transport of monitored trac with the reserved L2 VLAN. Remote port
monitoring supports monitoring sessions in which multiple source and destination ports distribute across multiple network devices.
Session and VLAN requirements
Remote port monitoring requires a source session (monitored ports on dierent source devices), a reserved tagged VLAN for transporting
monitored trac (congured on source, intermediate, and destination devices), and a destination session (destination ports connected to
analyzers on destination devices).
• Congure any network device with source ports and destination ports and enable it to function in an intermediate transport session for
a reserved VLAN at the same time for multiple remote port monitoring sessions. Enable and disable individual monitoring sessions.
• A remote port monitoring session mirrors monitored trac by prexing the reserved VLAN tag to monitored packets to transmit using
the reserved VLAN.
• The source address, destination address, and original VLAN ID of the mirrored packet are prexed with the tagged VLAN header.
Untagged source packets are tagged with the reserved VLAN ID.
Layer 2
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