Cisco Systems OL-8241-02 - page 73

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Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-8241-02
Chapter1 Configuring Interfaces and Circuits
Configuring the Switched Port Analyzer Feature
Figure 1-3 shows an example of SPAN connectivity with a protocol analyzer
connected to port 2/13 on a CSS. In this example, the CSS copies all packets
received or transmitted on Fast Ethernet (FE) port2/4 (SSPAN port) to FE
port 2/13 (DSPAN port). The analyzer connected to DSPAN port 2/13 receives all
network traffic that the SSPAN port receives or transmits.
Figure1-3 Example of SPAN Connectivity
From Client To Server
Copy of
SSPAN Rx
frame
Protocol analyzer or
RMON device
SSPAN port DSPAN port Normal egress port
Identical packets
87482
To Client From Server
Copy of
SSPAN Tx
frame
Protocol analyzer or
RMON device
SSPAN port DSPAN port
Normal egress port
Identical packets
SSPAN Rx
SSPAN Tx