Cisco Nexus 5600 Series - Configuring an ERSPAN Destination Session

PurposeCommand or Action
Defines the maximum transmission unit (MTU) truncation
size for ERSPAN packets. Valid values are from 64 to 1518.
mtu mtu-value
Example:
switch(config-erspan-src)# mtu
64
Step 4
The default is no truncation enabled.
Updates the configuration and exits ERSPAN source session
configuration mode.
exit
Example:
switch(config-mon-erspan-src)#
exit
Step 5
(Optional)
Saves the change persistently through reboots and restarts by
copying the running configuration to the startup configuration.
copy running-config
startup-config
Example:
switch(config)# copy
running-config startup-config
Step 6
Configuring an ERSPAN Destination Session
You can configure an ERSPAN destination session to copy packets from a source IP address to destination
ports on the local device. By default, ERSPAN destination sessions are created in the shut state.
Before You Begin
Ensure that you have already configured the destination ports in monitor mode.
Procedure
PurposeCommand or Action
Enters global configuration mode.config t
Example:
switch# config t
switch(config)#
Step 1
Enters interface configuration mode on the selected
slot and port or range of ports.
interface ethernet slot/port[-port]
Example:
switch(config)# interface ethernet
2/5
switch(config-if)#
Step 2
Configures switchport parameters for the selected
slot and port or range of ports.
switchport
Example:
switch(config-if)# switchport
Step 3
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
OL-31641-01 207
Configuring ERSPAN
Configuring an ERSPAN Destination Session