Cisco Nexus 3548 - Configuring ERSPAN Filtering

PurposeCommand or Action
(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 11
Configuring ERSPAN Filtering
You can configure SPAN filters for local and ERSPAN-source sessions only. SPAN and ERSPAN Filtering,
on page 143 provides more information about filters.
Procedure
PurposeCommand or Action
Enters global configuration mode.switch# configure terminal
Step 1
Configures an ERSPAN source session.switch(config)# monitor session
{session-number | all} type
erspan-source
Step 2
Creates an ERSPAN filter.switch(config-erspan-src)# filter {ip
source-ip-address source-ip-mask
Step 3
destination-ip-address
destination-ip-mask | mac
source-mac-address source-mac-mask
destination-mac-address
destination-mac-mask}
Configures the ERSPAN ID for the ERSPAN source
session. The ERSPAN range is from 1 to 1023. This
switch(config-erspan-src)# erspan-id
erspan-id
Step 4
ID uniquely identifies a source and destination
ERSPAN session pair. The ERSPAN ID configured in
the corresponding destination ERSPAN session must
be same as the one configured in the source session.
Configures the VRF that the ERSPAN source session
uses for traffic forwarding.
switch(config-erspan-src)# vrf vrf-name
Step 5
Configures the destination IP address in the ERSPAN
session. Only one destination IP address is supported
per ERSPAN source session.
switch(config-erspan-src)# destination
ip ip-address
Step 6
Configures the sources and traffic direction in which
to copy packets. You can enter a range of Ethernet ports,
a port channel, or a range of VLANs.
switch(config-erspan-src)# source
[interface [type slot/port] | port-channel
channel-number] | [vlan vlan-range] [rx
| tx | both]
Step 7
Cisco Nexus 3548 Switch NX-OS System Management Configuration Guide, Release 6.x
171
Configuring ERSPAN
Configuring ERSPAN Filtering