I have a Cisco 2960, Version 12.2(25)SEE.
Each interface is in trunk mode: a ip-phone (alcatel) and a PC are connected to each interface. And DATA and VOICE are in two different VLAN.
It works fine.
However, I notice today that when I sniff, with Ethereal for example, any port, I see ALL the unicast trafic!
Is it the normal behaviour of a trunk port? Does the switch send by dafault all unicast VLAN trafic to any trunk port configured on it? Even if a host is connected to this trunk interface?
How can I solve this security point?
Thanks you by advance for your help!