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Remote 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 .
Mapping the FC Tunnel
The tunnel-id-map option specifies the egress interface of the tunnel at the destination switch (see
Figure
Figure 43-13
source switch S
To terminate the FC tunnel in the destination switch for the scenario in
Command
Step 1
switchD# config t
Step 2
switchD(config)# fc-tunnel
tunnel-id-map 100 interface fc2/1
Explicit Paths
You can specify an explicit path through the Cisco MDS Fibre channel fabric (source-based routing),
using the explicit-path option. For example, if you have multiple paths to a tunnel destination, you can
use this option to specify the fc-tunnel to always take one path to the destination switch. The software
then uses this specified path even if other paths are available.
This option is especially useful if you prefer to direct the traffic through a certain path although other
paths are available. In an RSPAN situation, you can specify the explicit path so the RSPAN traffic does
not interfere with the existing user traffic. You can create any number of explicit paths in a switch (see
Figure
Cisco MDS 9000 Family Configuration Guide
43-24
43-13).
FC Tunnel Configuration
Cisco MDS
ST port
ST
fc2/1
IP address of VSAN 5
interface = 10.10.10.1
43-14).
Chapter 43
Cisco MDS
Fibre Channel
fabric
FC tunnel destination
Purpose
Enters configuration mode.
Terminates the FC tunnel (100) in the destination switch
(switch D). The tunnel ID range is from 1 to 255.
Monitoring Network Traffic Using SPAN
Cisco MDS
destination switch D
IP address of VSAN 5
interface = 10.10.10.2
Figure
43-13, follow these steps:
OL-6973-03, Cisco MDS SAN-OS Release 2.x
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