Block Cascated Hub

ifabrizio · ‎02-25-2008

Dear All,

I have a 3750-48TS at Access layer, I'd like to prevent that someone try to connect on the fastethernet ports some Hubs,How can I do that?

I have just configured the ethernet ports with the commands "switchport mode access" to prevent trunk on them.

Could you help me pls.

BR.

Igor.

aijaz802 · ‎02-25-2008

Hi,

You can use "switchport port-security" command to limit the number of pcs to connect to this port and thru mac address restrictions.

Please check the link for more information....

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_25_sed/command/reference/cli3.html

Pls. rate if it helps...

Regards,

*aijaz*

Jon Marshall · ‎02-25-2008

Hi Igor

We use port-security on our switches to stop people connecting hubs to the switch ports. We allow 1 mac-address only on each port which means that if a user connects in a hub to use multiple machines the port will shutdown.

Have a read of port security on the 3750 and please come back with any further questions

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_40_se/configuration/guide/swtrafc.html#wp1038501

Jon