Is the "broadcast traffic" 255.255.255.255?
If so, can VLAN block it?
As a frame comes through an ingress port, the switch does three things ... 1. where to forward it, 2. should it be forwarded, and 3. how it should be forwarded.
#2 is refering to QoS and those types of things so we are really talking about #1 and #3.
1. The switch takes the frame's destination address and looks it up in the Content Addressable Memory (CAM) table. If the address is there, all it has to do is read off the egress port and the vlan ID to figure out which port it needs to go out (that is #3). But if it can't find the address (and this is what we are interested in), the switch will then flood that frame out every switchport ... in that vlan.
So ... a switch will not forward a broadcast out every switchport ... just every switchport in a vlan. A frame containing the address FF:FF:FF:FF:FF:FF will be forwarded to all connected segments ... of that vlan.