Switches with monitoring port

[premod_dm]

Hi,

Can someone point me to commercial L2 switches with a monitoring port? My idea is to use this port to sniff the entire traffic passing through?

Thanks

 

[Naveed Alam]

hi...
see it on www.cisco.com
cisco 1900 series have console port...

Regards

 

[makri]

hello

use a packet sniffer like ethereal

makri

 

[bernie75]

hello

use a packet sniffer like ethereal

makri

How does it work ?
I have thought a switch would remember the MAC address and would not send the packet to a 2nd pc with the installed ethereal.
Do you clone the MAC address ?

Bernie

 

[premod_dm]

Switches do not forward all traffic to all ports (as hubs do). Hence with a normal switch only broadcasts and packets addressed to a specific port (MAC) can be monitored. Monitoring switches should allow us to see the traffic flowing through all ports. Of course, we can use a sniffer to capture and analyse this traffic.