Span session trafic seen in multiple switch

Unanswered Question
Nov 21st, 2007

Hi,

in my Campus Lan, i've one core switch (4506) and several acess swicth (2950)

On an access switch i create a monitor sesion to get trafic for a particular port. Works fine.

On another switch (not in the same stack), i create another monitor session (with the same number) to see trafic for a particulor poirt on this switch. Works fine BUT i also see trafic from monitor on the other span session ?

I don't understand why. I don't use rspan.

Any idea ?

Regards

I have this problem too.
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glen.grant Wed, 11/21/2007 - 05:53

If its a trunked environment you could see some of the same traffic.

Kevin Dorrell Wed, 11/21/2007 - 06:09

Are you sure it is not just the broadcast traffic you are seeing? If so, that would be normal.

Kevin Dorrell

Luxembourg

gbusson Wed, 11/21/2007 - 09:20

No, i ve all traffic and the port spanned are not in trunk mode

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