Concept Guide

• By default, ingress trac on a destination port is dropped.
Restrictions
When you congure remote port mirroring, the following restrictions apply:
• You can congure the same source port to be used in multiple source sessions.
• You cannot congure a source port channel or source VLAN in a source session if the port channel or VLAN has a member port that is
congured as a destination port in a remote-port mirroring session.
• A destination port for remote port mirroring cannot be used as a source port, including the session in which the port functions as the
destination port.
• A destination port cannot be used in any spanning tree instance.
• The reserved VLAN used to transport mirrored trac must be a L2 VLAN. L3 VLANs are not supported.
• On a source switch on which you congure source ports for remote port mirroring, you can add only one port to the dedicated RPM
VLAN which is used to transport mirrored trac. You can congure multiple ports for the dedicated RPM VLAN on intermediate and
destination switches.
Displaying Remote-Port Mirroring Congurations
To display the current conguration of remote port mirroring for a specied session, enter the show cong command in MONITOR
SESSION conguration mode.
DellEMC(conf-mon-sess-2)#show config
!
monitor session 2 type rpm
source fortyGigE 1/32/1 destination remote-vlan 300 direction rx
source Port-channel 10 destination remote-vlan 300 direction rx
no disable
To display the currently congured source and destination sessions for remote port mirroring on a switch, enter the show monitor session
command in EXEC Privilege mode.
DellEMC(conf)#do show monitor session
SessID Source Destination Dir Mode Source IP Dest IP
------ ------ ----------- --- ---- --------- --------
1 remote-vlan 100 Fo 1/32/1 N/A N/A N/A N/A
1 remote-vlan 100 Po 100 N/A N/A N/A N/A
2 Fo 1/4/1 remote-vlan 300 rx Port N/A N/A
2 Po 10 remote-vlan 300 rx Port N/A N/A
To display the current conguration of the reserved VLAN, enter the show vlan command.
DellEMC#show vlan
Codes: * - Default VLAN, G - GVRP VLANs, R - Remote Port Mirroring VLANs, P - Primary, C -
Community, I - Isolated
O - Openflow
Q: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
o - OpenFlow untagged, O - OpenFlow tagged
G - GVRP tagged, M - Vlan-stack
i - Internal untagged, I - Internal tagged, v - VLT untagged, V - VLT tagged
NUM Status Description Q Ports
* 1 Inactive
R 100 Active T Fo 1/20/1
R 300 Active T Fo 1/24/1
Port Monitoring
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