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Configuring RSPAN on the Switch
Configuring RSPAN on the Switch
These sections describe how to configure RSPAN:
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RSPAN Hardware Requirements
The RSPAN supervisor engine requirements are as follows:
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No third party or other Cisco switches can be placed in the end-to-end path for RSPAN traffic.
Understanding How RSPAN Works
See the
Note
terminology that apply to both the SPAN and RSPAN configurations.
RSPAN has all the features of SPAN (see the
plus support for the source ports and the destination ports that are distributed across multiple switches,
allowing remote monitoring of multiple switches across your network (see
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 is forwarded to the destination ports that
are configured in the RSPAN VLAN. The traffic type for the sources (ingress, egress, or both) in an
RSPAN session can be different in the different source switches but is the same for all the sources in
each source switch for each RSPAN session. Do not configure any ports in an RSPAN VLAN except
those that are selected to carry the RSPAN traffic. Learning is disabled on the RSPAN VLAN.
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
49-10
RSPAN Hardware Requirements, page 49-10
Understanding How RSPAN Works, page 49-10
RSPAN Configuration Guidelines, page 49-11
Configuring RSPAN, page 49-12
RSPAN Configuration Examples, page 49-15
For source switches—The Catalyst 6500 series switch with any of the following:
Supervisor Engine 1A and Policy Feature Card (PFC): WS-X6K-SUP1A-PFC
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Supervisor Engine 1A, PFC, and Multilayer Switch Feature Card (MSFC):
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WS-X6K-SUP1A-MSFC
Supervisor Engine 1A, PFC, and MSFC2: WS-X6K-S1A-MSFC2
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Supervisor Engine 2 and PFC2: WS-X6K-S2-PFC2
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Supervisor Engine 1A, PFC, and MSFC2: WS-X6K-S1A-MSFC2
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Supervisor Engine 720 with the following onboard components: Policy Feature Card 3A
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(PFC3A/PFC3B/PFC3BXL), Multilayer Switch Feature Card 3 (MSFC3), and integrated
720-Gbps switch fabric: WS-SUP720
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Supervisor Engine 32, PFC3B/PFC3BXL, and MSFC2A: WS-SUP32-GE-3B
For destination or intermediate switches—Any Cisco switch supporting RSPAN VLAN
"Understanding How SPAN and RSPAN Work" section on page 49-1
Chapter 49
Configuring SPAN, RSPAN and the Mini Protocol Analyzer
"Understanding How SPAN Works" section on page
for the concepts and
49-6),
Figure
49-2).
OL-8978-04
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