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Chapter 43
Monitoring Network Traffic Using SPAN
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
Configure an RSPAN Session
A RSPAN session is similar to a SPAN session, with the destination interface being an RSPAN tunnel.
To configure an RSPAN session in the source switch for the scenario in
Command
Step 1
switchS# config t
Step 2
switchS(config)# span session 2
switchS(config-span)#
Step 3
switchS(config-span)# destination interface
fc-tunnel 100
Step 4
switchS(config-span)# source interface fc1/1
Configuration in All Intermediate Switches
This section identifies the tasks that must be performed in all intermediate switches in the end-to-end
path of the RSPAN tunnel:
•
•
•
Configuring VSAN Interfaces
Figure 43-13
This example assumes that VSAN 5 is already configured in the VSAN database.
Note
To create a VSAN interface in the destination switch for the scenario in
Command
Step 1
switchD# config t
Step 2
switchD(config)# interface vsan 5
switchD(config-if)#
Step 3
switchD(config-if)# ip address
10.10.10.2 255.255.255.0
Step 4
switchD(config-if)# no shutdown
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Configuring VSAN Interfaces, page 43-21
Enabling FC Tunnels, page 43-22
Enabling IP Routing, page 43-22
depicts an RSPAN tunnel configuration terminating in the destination switch (Switch D).
Figure
Purpose
Enters configuration mode.
Configures the specified SPAN session (2).
If the session does not exist, it is created. The
session ID ranges from 1 to 16.
Configures the specified RSPAN tunnel
(100) in a session.
Configures the source interface (fc1/1) for
this session and spans the traffic from
interface fc1/1 to RSPAN tunnel 100.
Figure
Purpose
Enters configuration mode.
Configures the specified VSAN interface (VSAN 5) in
the destination switch (Switch D).
Configures the IP address and subnet for the VSAN
interface in the destination switch (Switch D).
Enables traffic flow to administratively allow traffic
(provided the operational state is up).
Cisco MDS 9000 Family Configuration Guide
Remote SPAN
43-11, follow these steps:
43-13, follow these steps:
43-21
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