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49-6

Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7

OL-8978-04

Chapter 49 Configuring SPAN, RSPAN and the Mini Protocol Analyzer

Configuring SPAN on the Switch

See Table 49-1 for the supported combinations of SPAN, RSPAN, and Mini Protocol Analyzer sessions.

You can configure multiple ports or VLANs as sources for each SPAN session, and you can configure a

single source port for each Mini Protocol Analyzer session.

Configuring SPAN on the Switch

These sections describe how to configure SPAN:

• SPAN Hardware Requirements, page 49-6

• Understanding How SPAN Works, page 49-6

• SPAN Configuration Guidelines, page 49-7

• Configuring SPAN from the CLI, page 49-8

SPAN Hardware Requirements

All Catalyst 6500 series switch supervisor engines support SPAN.

Understanding How SPAN Works

SPAN selects the network traffic for analysis by a network analyzer such as a SwitchProbe device or

other Remote Monitoring (RMON) probe. SPAN mirrors the traffic from one or more source ports on

any VLAN, from one or more VLANs, or from the sc0 console interface to the destination ports for

analysis (see Figure 49-1). In Figure 49-1, all traffic on Ethernet port 5 (the source port) is mirrored to

Ethernet port 10. A network analyzer on Ethernet port 10 receives all network traffic from Ethernet

port 5 without being physically attached to it.

Table 49-1 SPAN RSPAN and Mini Protocol Analyzer Session Limits

SPAN, RSPAN, and Mini Protocol Analyzer Sessions Catalyst 6500 Series Switches

rx or both SPAN sessions 2

1. Each RSPAN source session or Mini Protocol Analyzer session reduces the limit for rx or both SPAN sessions by one.

tx SPAN sessions 4

Mini Protocol Analyzer sessions 1

tx, rx, or both RSPAN source sessions 1

2. Supervisor Engine 720 supports two RSPAN source sessions.

RSPAN destinations 24

Total SPAN sessions 30

3. 2 rx or both SPAN sessions + 4 tx SPAN sessions + 24 RSPAN destination sessions = 30 total SPAN sessions. A Mini

Protocol Analyzer session counts as one rx or both SPAN session.

Cisco WS-C6506 User Manual

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