Chapter 38
Configuring SPAN and RSPAN
RSPAN Hardware Requirements
RSPAN supervisor engine requirements are as follows:
•
•
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 SPAN and RSPAN configuration.
RSPAN has all the features of SPAN (see the
plus support for source ports and destination ports 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 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.
78-13315-02
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
"Understanding How SPAN and RSPAN Works" section on page 38-1
"Understanding How SPAN Works" section on page
Figure
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
Configuring RSPAN
for concepts and
38-2).
38-5),
38-9
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