Users Guide

Port monitoring
Port monitoring monitors ingress or egress traffic of one port to another for analysis. A monitoring port (MG) or destination port
is the port where the monitored traffic is sent for analysis. A monitored port (MD) or source port is the source interface that is
monitored for traffic analysis.
NOTE: This feature is not supported on the Z9332F-ON platform.
The different types of port monitoring are:
● Local port monitoring—Port monitoring is done in the same switch. The switch forwards a copy of incoming and outgoing
traffic from one port to another port for further analysis.
● Remote port monitoring (RPM)—Port monitoring is done on traffic running across a remote device in the same network.
The L2 network carries the monitored traffic.
● Encapsulated remote port monitoring (ERPM)—Port monitoring is done on the L3 network. The traffic from the source
port is encapsulated and forwards to the destination port in another switch.
Configuration notes
All Dell EMC PowerSwitches except MX-Series, S4200-Series, S5200 Series, and Z9332F-ON:
● When you configure a port as a source interface, and add the same port to the remote VLAN used for monitoring traffic,
the configuration fails and the system does not display an error message. Dell EMC recommends adding the ports to the
destination remote VLAN first and then configuring the source interface. In this case, when you configure the destination
port as source, the system displays an error message.
● When you configure remote port mirroring and overwrite the transport VLAN by re-entering the destination remotevlan
vlan-id command with a different VLAN ID, an error message displays. The new remote VLAN configuration is not accepted.
You must first remove the configured remote VLAN using the no version of the command, and then re-enter the command
with the new remote VLAN ID.
● VLAN statistics on the remote port mirroring (RPM) VLAN interface are not incremented on the following switches:
S4048-ON, S4048T-ON, S4100-ON, S6010-ON, and Z9264F-ON. For these switches, the show interface vlan rpm_vlanid
command does not display statistics for the mirrored traffic.
Local port monitoring
For local port monitoring, the monitored source ports and monitoring destination ports are on the same device.
Configure local monitoring session
1. Verify that the intended monitoring port has no configuration other than no shutdown and no switchport.
show running-configuration
2. Create a monitoring session in CONFIGURATION mode.
monitor session session-id [local]
3. Enter the source and direction of the monitored traffic in MONITOR-SESSION mode.
source interface interface-type {both | rx | tx}
4. Enter the destination of traffic in MONITOR-SESSION mode.
destination interface interface-type
Create monitoring session
OS10(config)# monitor session 1
OS10(conf-mon-local-1)#
Layer 2
553