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Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
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Chapter 26 Configuring SPAN and RSPAN
Configuring RSPAN
Adding RSPAN Source Ports in Intermediate Switches
This example shows how to add RSPAN source ports in intermediate switches.
Figure 26-4
shows an
RSPAN configuration; see
Table 26-3
for the commands to configure this RSPAN session. Ports 2/1-2
in Switch C can be configured for the same RSPAN session.
Figure 26-4 Adding RSPAN Source Ports in an Intermediate Switch
Configuring Multiple RSPAN Sessions
This example shows how to configure multiple RSPAN sessions.
Figure 26-5
shows an RSPAN
configuration; see
Table 26-4
for the configuration commands to configure this RSPAN session. This is
a typical scenario where the monitoring probes would be placed in the data center and source ports in
Table 26-2 Making Modifications to an Active RSPAN Session
Switch
Action
RSPAN CLI Commands
A (source)
Disable the RSPAN session.
set rspan disable source 901
B (source)
Remove source port 3/2 from the RSPAN session.
set rspan source 3/1, 3/3 901 reflector 3/4
B (source)
Add source port 3/2 to the RSPAN session.
set rspan source 3/1-3 901 reflector 3/4
Table 26-3 Adding RSPAN Source Ports in an Intermediate Switch
Switch
Ports
Reflector
Port
RSPAN
VLAN
Direction
RSPAN CLI Commands
A (source)
4/1, 4/2
4/3
901
Ingress
set rspan source 4/1-2 901 rx reflector 4/3
B (source)
3/1, 3/2, 3/3
3/4
901
Bidirectional
set rspan source 3/1-3 901 reflector 3/4
C (intermediate)
–
–
901
–
No RSPAN CLI command needed
C (source)
2/1, 2/2
2/3
901
Bidirectional
set rspan source 2/1-2 901 reflector 2/3
D (destination)
1/2
–
901
–
set rspan destination 1/2 901
1/1
1/2
3/1 2/1
2/2 3/2
1/2
4/1 4/2 4/3
1/2
3/1 3/2
1/1
3/3 3/4
Switch A
Switch C
Switch D
Switch B
Probe
Destination switch
(data center)
Intermediate switch
(distribution)
Source switch(es)
(access)
2/1.5
58635
T1
T2
T3