Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual page 798

Configuring Local SPAN, RSPAN, and ERSPAN
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When clearing monitor sessions, note the following information:
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This example shows how to configure session 3 to monitor bidirectional traffic from Gigabit Ethernet
port 4/1:
Router(config)# monitor session 3 type erspan-source
Router(config-mon-erspan-src)# source interface gigabitethernet 4/1
Router(config-mon-erspan-src)# destination
Router(config-mon-erspan-src-dst)# ip address 10.1.1.1
Router(config-mon-erspan-src-dst)# origin ip address 20.1.1.1
Router(config-mon-erspan-src-dst)# erspan-id 101
For additional examples, see the
Configuring ERSPAN Destination Sessions
You cannot monitor ERSPAN traffic locally.
Note
To configure an ERSPAN destination session, perform this task:
Command
Step 1
Router# configure terminal
Step 2
Router(config)# monitor session
ERSPAN_destination_session_number type
erspan-destination
Router(config)# no monitor session
{session_number | all |
range session_range[[,session_range],...]}
Step 3
Router(config-mon-erspan-dst)# description
session_description
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
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vlan_range is first_vlan_ID - last_vlan_ID.
mixed_vlan_list is, in any order, single_vlan , vlan_range , ...
ERSPAN_flow_id can range from 1 to 1023.
All ERSPAN source sessions on a switch must use the same source IP address. Enter the origin ip
address ip_address force command to change the origin IP address configured in all ERSPAN
source sessions on the switch.
ttl_value can range from 1 to 255.
ipp_value can range from 0 to 7.
dscp_value can range from 0 to 63.
The no monitor session number command entered with no other parameters clears
session session_number.
session_range is first_session_number-last_session_number.
In the no monitor session range command, do not enter spaces before or after the dash. If
Note
you enter multiple ranges, do not enter spaces before or after the commas.
Chapter 48
"Configuration Examples" section on page
Purpose
Enters global configuration mode.
Configures an ERSPAN destination session number and
enters ERSPAN destination session configuration mode
for the session.
Clears the monitor configuration.
(Optional) Describes the ERSPAN destination session.
Configuring Local SPAN, RSPAN, and ERSPAN
48-23.
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