Chapter 34 Configuring Local Span And Rspan - Cisco 7609 Configuration Manual

Cisco ios software configuration guide—12.1e
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Understanding How Local SPAN and RSPAN Work
Local SPAN Overview
Local SPAN supports source ports, source VLANs, and destination ports on the same Cisco 7600 series
router. 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 (see
traffic on Ethernet port 5 (the source port) is copied to Ethernet port 10. A network analyzer on Ethernet
port 10 receives all network traffic from Ethernet port 5 without being physically attached to Ethernet
port 5.
Figure 34-1 Example SPAN Configuration
E1
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
34-2
1 2 3 4 5 6 7 8 9 10 11 12
E6 E7
E5
E8
E4
E9
E3
E2
Network analyzer
Figure
34-1). For example, as shown in
Port 5 traffic mirrored
on port 10
E11
E12
E10
Chapter 34
Configuring Local SPAN and RSPAN
Figure
34-1, all
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