RSPAN Trunked port - 6509

Discussion in 'Cisco' started by Paul Groth, Oct 28, 2005.

  1. Paul Groth

    Paul Groth Guest

    Hi All,

    I am wanting to do an RSPAN session on my 6509 of a trunked port. Once
    I setup the RSPAN session by using the command 'set rspan source 6/48
    445 both', the traffic seems only to go to the RSPAN VLAN, it doesn't
    continue to flow to the other side of the trunked port..

    I am guessing I am using the commmand incorrectly as I am redirecting
    the traffic only to the RSPAN vlan, it should be going to both the
    RSPAN vlan and to the other side of the trunked port.


    Paul Groth, Oct 28, 2005
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  2. Paul Groth

    DigitalVinyl Guest

    Rspan essentially forwards whatever traffic you are spanning ('both'
    of port 6/48 in your case) onto a VLAN (445). You then listen to that
    vlan to hear the spanned traffic. The VLAN you've created must stretch
    across all switches between you ad the monitored port.

    So vlan 445 is the vlan you've created just for RSPAN traffic.

    You are monitoring port 6/48 on the switch you issued this command on.

    You then need to log into the switch you sniffer/PC is on. You then
    issue the rspan destination command. This sends all the traffic on the
    445 to you port. Basically...

    set rspan destination mod/port 445

    Just check the syntax--i think i got that right.
    DiGiTAL_ViNYL (no email)
    DigitalVinyl, Oct 29, 2005
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