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Can a RSPAN Source Session and the Destination Session Exist on the Same Catalyst Switch?

April 26, 2017catalyst destination exist session source Switch

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Can a RSPAN Source Session and the Destination Session Exist on the Same Catalyst Switch?

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No. RSPAN does not work when the RSPAN source session and the RSPAN destination session are on the same switch. If an RSPAN source session is configured with a particular RSPAN VLAN and an RSPAN destination session for that RSPAN VLAN is configured on the same switch, then the RSPAN destination session’s destination port will not transmit the captured packets from the RSPAN source session due to hardware limitations. This is not supported on the 4500 Series and 3750 Series Switches. This issue is documented in Cisco bug ID CSCeg08870 (registered customers only) . This is an example: monitor session 1 source interface Gi6/44 monitor session 1 destination remote vlan 666 monitor session 2 destination interface Gi6/2 monitor session 2 source remote vlan 666 The workaround for this issue is to use the regular SPAN.