Users Guide
• The member port of the reserved VLAN must have the MTU and IPMTU value as MAX+4 (to hold the VLAN tag parameter).
• To associate with source session, the reserved VLAN can have a maximum of four member ports.
• To associate with destination session, the reserved VLAN can have multiple member ports.
• The reserved VLAN cannot have untagged ports.
Reserved L2 VLAN
• MAC address learning in the reserved VLAN is automatically disabled.
• There is no restriction on the VLAN IDs used for the reserved remote monitoring VLAN. Valid VLAN IDs are from 2 to 4093. The default
VLAN ID is not supported.
• In monitored trac, packets that have the same destination MAC address as an intermediate or destination device in the path used by
the reserved VLAN to transport the mirrored trac are dropped by the device that receives the trac if the device has a L3 VLAN
congured.
Source session
• Congure physical ports and port-channels as sources in remote port monitoring and use them in the same source session. You can use
both L2 (congured with the switchport command) and L3 ports as source ports. Optionally congure one or more source VLANs
to congure the VLAN trac to be monitored on source ports.
• Use the default VLAN and native VLANs as a source VLAN.
• You cannot congure the dedicated VLAN used to transport mirrored trac as a source VLAN.
Restrictions
• When you use a source VLAN, enable ow-based monitoring (flow-based enable).
• In a source VLAN, only received (rx) trac is monitored.
• You cannot congure a source port-channel or source VLAN in a source session if the port-channel or VLAN has a member port
congured as a destination port in a remote port monitoring session.
• You cannot use a destination port for remote port monitoring as a source port, including the session the port functions as the
destination port.
• The reserved VLAN used to transport mirrored trac must be a L2 VLAN — L3 VLANs are not supported.
Congure remote port monitoring
Remote port monitoring requires a source interface (monitored ports on dierent source network devices) and a reserved tagged VLAN for
transporting mirrored trac (congured on the source, intermediate, and destination devices).
1 Create a remote monitoring session in CONFIGURATION mode.
monitor session session-id type rspan-source
2 Enter the source to monitor trac in MONITOR-SESSION mode.
source interface interface-range direction
3 Enter the destination to send the trac to in MONITOR-SESSION mode.
destination remote-vlan vlan-id
4 Enable the monitoring interface in MONITOR-SESSION mode.
no shut
Create remote monitoring session
OS10(config)# monitor session 10 type rspan-source
OS10(conf-mon-rspan-source-10)#
Congure source and destination port, and trac direction
OS10(conf-mon-rspan-source-10)# source interface vlan 10 rx
OS10(conf-mon-rspan-source-10)# destination remote-vlan 100
OS10(conf-mon-rspan-source-10)# no shut
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