Local Span; Chapter 27 Configuring Span And Rspan - Cisco Catalyst 2975 Software Configuration Manual

Understanding SPAN and RSPAN
These sections contain this conceptual information:
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Local SPAN

Local SPAN supports a SPAN session entirely within one switch; all source ports or source VLANs and
destination ports are in the same switch or switch stack. Local SPAN copies traffic from one or more
source ports in any VLAN or from one or more VLANs to a destination port for analysis. For example,
in Figure
network analyzer on port 10receives all network traffic from port 5 without being physically attached to
port 5.
Figure 27-1
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Catalyst 2975 Switch Software Configuration Guide
27-2
Local SPAN, page 27-2
Remote SPAN, page 27-3
SPAN and RSPAN Concepts and Terminology, page 27-4
SPAN and RSPAN Interaction with Other Features, page 27-9
SPAN and RSPAN and Switch Stacks, page 27-10
27-1, all traffic on port 5 (the source port) is mirrored to port 10 (the destination port). A
Example of Local SPAN Configuration on a Single Switch
1 2 3 4 5 6 7 8 9 10 11 12
6 7
5 8
4 9
3
2
Network analyzer
Port 5 traffic mirrored
on Port 10
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12
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Chapter 27 Configuring SPAN and RSPAN
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