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Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
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Chapter 38 Configuring SPAN and RSPAN
Configuring RSPAN
RSPAN Hardware Requirements
RSPAN supervisor engine requirements are as follows:
•
For source switches—Catalyst 6000 family switch with any of the following:
–
Supervisor Engine 1 and Policy Feature Card (PFC): WS-X6K-SUP1A-PFC
–
Supervisor Engine 1, PFC, and Multilayer Switch Feature Card (MSFC):
WS-X6K-SUP1A-MSFC
–
Supervisor Engine 1, PFC, and MSFC2: WS-X6K-S1A-MSFC2
–
Supervisor Engine 2 and PFC2: WS-X6K-S2-PFC2
–
Supervisor Engine 2, PFC2, and MSFC2: WS-X6K-S1A-MSFC2
•
For destination or intermediate switches—Any Cisco switch supporting RSPAN VLAN
No third party or other Cisco switches can be placed in the end-to-end path for RSPAN traffic.
Understanding How RSPAN Works
Note
See the
“Understanding How SPAN and RSPAN Works” section on page 38-1
for concepts and
terminology that apply to both SPAN and RSPAN configuration.
RSPAN has all the features of SPAN (see the
“Understanding How SPAN Works” section on page 38-5
),
plus support for source ports and destination ports distributed across multiple switches, allowing remote
monitoring of multiple switches across your network (see
Figure 38-2
).
The traffic for each RSPAN session is carried over a user-specified RSPAN VLAN that is dedicated for
that RSPAN session in all participating switches. The SPAN traffic from the sources, which cannot be
in the RSPAN VLAN, is switched to the RSPAN VLAN and then forwarded to destination ports
configured in the RSPAN VLAN. The traffic type for sources (ingress, egress, or both) in an RSPAN
session can be different in different source switches, but is the same for all sources in each source switch
for each RSPAN session. Do not configure any ports in an RSPAN VLAN except those selected to carry
RSPAN traffic. Learning is disabled on the RSPAN VLAN.
