Cisco Nexus 3548 - Configuring an ERSPAN Destination Session

PurposeCommand or Action
(Optional)
Configures the IP time-to-live (TTL) value for the
ERSPAN traffic. The range is from 1 to 255.
ip ttl ttl-number
Example:
switch(config-erspan-src)# ip ttl 25
Step 11
(Optional)
Configures the differentiated services code point
(DSCP) value of the packets in the ERSPAN traffic.
The range is from 0 to 63.
ip dscp dscp-number
Example:
switch(config-erspan-src)# ip dscp 42
Step 12
Enables the ERSPAN source session. By default,
the session is created in the shut state.
Only two ERSPAN source sessions can
be running simultaneously.
Note
no shut
Example:
switch(config-erspan-src)# no shut
Step 13
(Optional)
Displays the ERSPAN session configuration.
show monitor session {all | session-number
| range session-range}
Example:
switch(config-erspan-src)# show
monitor session 3
Step 14
(Optional)
Displays the running ERSPAN configuration.
show running-config monitor
Example:
switch(config-erspan-src)# show
running-config monitor
Step 15
(Optional)
Displays the ERSPAN startup configuration.
show startup-config monitor
Example:
switch(config-erspan-src)# show
startup-config monitor
Step 16
(Optional)
Copies the running configuration to the startup
configuration.
copy running-config startup-config
Example:
switch(config-erspan-src)# copy
running-config startup-config
Step 17
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.
Cisco Nexus 3548 Switch NX-OS System Management Configuration Guide, Release 6.x
166
Configuring ERSPAN
Configuring an ERSPAN Destination Session