Configuring Rspan - Dell Networking N4000 Series Configuration Manual

Configuring RSPAN

RSPAN is an extension of port mirroring that operates across multiple
switches. Use the following commands in Privileged EXEC mode to configure
RSPAN. Remember to assign VLANs to physical interfaces (steps not shown).
Configuring RSPAN (Source Switch)
Command
configure
vlan-id
vlan
remote-span
exit
interface te1/0/1
switchport mode trunk
switch trunk allowed
vlan-id
vlan
exit
monitor session
session_number source
interface
interface
tx | both}]
monitor session
session_number
destination remote vlan
vlan_id
reflector-port
interface_id
monitor session
session_number
mode
Purpose
Enter Global Configuration mode.
Configure an RSPAN VLAN.
Configure the VLAN as a spanning VLAN.
Exit to Global Configuration mode.
Enter interface configuration mode.
Set the egress span interface to trunk mode.
Restrict the trunk to the spanning VLAN (optional).
Exit to Global Configuration mode.
Configure a source (monitored) port for a monitor session.
• session_number —The monitoring session ID, which is
[{rx |
always 1.
• sourceinterface—The interface to be monitored. The
internal CPU port may not be configured as an RSPAN
source.
• rx | tx | both — Monitor ingress (rx) or egress (tx)
traffic. If no parameter is given, both ingress and egress
traffic are monitored.
Configure a local RSPAN reflector port on the source
switch. The reflector port should be configured as a trunk
port.
Enable the administrative mode for the configured port
mirroring session to start sending the traffic from the
source port to the destination (probe) port.
Monitoring Switch Traffic
445