HP Cisco Nexus 5000 Cisco MDS 9000 Family CLI Configuration Guide - Release 4. - Page 1268

Remote SPAN Chapter 51 Monitoring Network Traffic Using SPAN Send documentation comments to [email protected] To reference the explicit path, follow these steps: Step 1 Step 2 Step 3 Command switchS# config t switchS(config)# interface fc-tunnel 100 switchS(config)# explicit-path Path1 Purpose Enters configuration mode. References the tunnel ID for Path1. Links Path1 to the tunnel ID. This configuration explicitly specifies Path 1 to be used for the RSPAN traffic. Refer to RFC 3209 for further details on explicit paths and source-based routing. Monitoring RSPAN Traffic Once the session is configured, other SPAN sources for this session can also be configured as required. Figure 51-15 shows an RSPAN setup where one session with destination port fc2/1 and source interface fc1/1 is used to capture traffic in both ingress and egress directions. Figure 51-15 Fibre Channel Analyzer Using a Single SD Port to Monitor RSPAN Traffic Source switch destination switch TX RX fc1/1 Cisco MDS 9000 switch TE port ST port Fibre Channel fabric Cisco MDS 9000 switch SD port fc2/1 FC analyzer 99009 To use this setup, the analyzer should have the capability of distinguishing ingress and egress traffic for all captured frames. Sample Scenarios Note RSPAN can be combined with the local SPAN feature so SD ports forward local SPAN traffic along with remote SPAN traffic. Various SPAN source and tunnel scenarios are described in this section. Single Source with One RSPAN Tunnel The source Switch S and the destination Switch D are interconnected through a Fibre Channel fabric. An RSPAN tunnel is configured as a destination interface for the SPAN session and the ST port forwards SPAN traffic through the RSPAN tunnel (see Figure 51-16). 51-28 Cisco MDS 9000 Family CLI Configuration Guide OL-18084-01, Cisco MDS NX-OS Release 4.x