Ruihai,
If you do not specify the keyword 'create' with the set span command and you have only
one session, the session will be overwritten. If a matching destination port exists,
the
particular session will be overwritten (with or without specifying create). If you
specify the keyword 'create' and there is no matching destination port, the session
will
be created.
Catalyst 6000 Family Switches (SPAN and RSPAN Session Limits)
2 rx or both(rx & tx) SPAN sessions + 4 tx SPAN sessions + 24 RSPAN destination
sessions
= 30 total SPAN sessions
for more info visit CCO... Configuring SPAN and RSPAN
cheers,
Nick
Ruihai An wrote:
> We need at least two SPAN ports on each 6505 switch to connect our IDS and
> Sniffer. When we config the second SPAN, it always overwrite the prevously
> configured SPAN port. It seems you can not configure more than more than
> two SPAN on one switch. I am not sure if that is true.
>
> Thanks
>
> Ruihai
>
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