1 Reply Latest reply: Oct 20, 2015 7:22 AM by Steven Davidson RSS

    SPAN session on Catalyst 3750G

    chacha2me

      How many SPAN session can I have on the Catalyst 3750G? Thx

        • 1. Re: SPAN session on Catalyst 3750G
          Steven Davidson

          SPAN on the Catalyst 2940, 2950, 2955, 2960, 2970, 3550, 3560, 3560-E, 3750 and 3750-E Series Switches

          These are guidelines for the configuration of the SPAN feature on the Catalyst 2940, 2950, 2955, 2960, 2970, 3550, 3560, 3560-E, 3750, and 3750-E Series Switches:

          • The Catalyst 2950 Switches can have only one SPAN session active at a time and can monitor only source ports. These switches cannot monitor VLANs.
          • The Catalyst 2950 and 3550 Switches can forward traffic on a destination SPAN port in Cisco IOS Software Release 12.1(13)EA1 and later.
          • The Catalyst 3550, 3560, and 3750 Switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs.
          • The Catalyst 2970, 3560, and 3750 Switches do not require the configuration of a reflector port when you configure an RSPAN session.
          • The Catalyst 3750 Switches support session configuration with the use of source and destination ports that reside on any of the switch stack members.
          • Only one destination port is allowed per SPAN session, and the same port cannot be a destination port for multiple SPAN sessions. Therefore, you cannot have two SPAN sessions that use the same destination port.

          Source: Catalyst Switched Port Analyzer (SPAN) Configuration Example - Cisco