On a cat 6509 I setup my port to span a vlan with not much traffic and I can
surf and send/receive email without any noticeable difficulty. I've done
this a couple of time before and it seems to work okay. I have seen it done
on a unix system running tcpdump and it was able to surf, I have used NAI
sniffer on my win nt system as a span but I was just gathering data.
happy new year
Dave H
span command I used:
set span 10 4/44 both inpkts enable
show my port setting:
CAT> (enable) sh port 4/44
Port Name Status Vlan Duplex Speed Type
----- ------------------ ---------- ---------- ------ ----- ------------
4/44 2B044-GY monitor 110 full 100 10/100BaseTX
show span:
CAT> (enable) sh span
Destination : Port 4/44
Admin Source : VLAN 10
Oper Source : Port 1/1-2
Direction : transmit/receive
Incoming Packets: enabled
Learning : enabled
Multicast : enabled
Filter : -
Status : active
-----Original Message-----
From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 29, 2000 3:28 PM
To: [EMAIL PROTECTED]
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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