资讯

XDA Developers on MSN

Some more advanced features to enable on your managed switch (that aren't VLANs)

Say hello to Quality of Service, Link Aggregation, Access Control Lists, Spanning Tree Protocol, and IGMP Snooping.
Ars Technica

Prevent VLAN to VLAN access on Cisco switch

Setup an access list on the router allowing them to communicate in the first place. If that is the 4500 set it up there.