Cisco employees have confirmed for me that devices connected to span ports
are unable to act as normal hosts by design.






Priscilla Oppenheimer <[EMAIL PROTECTED]>@groupstudy.com on 12/29/2000
03:27:52 PM

Please respond to Priscilla Oppenheimer <[EMAIL PROTECTED]>

Sent by:  [EMAIL PROTECTED]

To:   [EMAIL PROTECTED]
cc:    (bcc: Kevin Cullimore)
Subject:  can SPAN port transmit?


Hi folks,

If I connect a Sniffer-like device to the SPAN port of a switch, will the
Sniffer-like device be able to transmit data?

My guess is no. From my reading on Cisco's SwitchProbe external hardware
probes, it appears that the SwitchProbe needs an additional port to send
data to a network management system. One port connects to a SPAN port on
the switch and the other port connects to a normal port and is configured
in "management mode."

But, does anyone have experience with trying to send from a device
connected to a SPAN port?

Thanks

Priscilla

________________________

Priscilla Oppenheimer
http://www.priscilla.com

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