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Controlling Broadcast Frames with Virtual LANs |
 | | A virtual LAN consists of two or more Token Ring segments that are joined by Catalyst 1600 devices, where stations can only make connections to other stations or servers that are part of the same virtual LAN. |
 | | Although the virtual LANs share the ring on which the servers are located, broadcast frames are not forwarded from either virtual LAN onto rings that only belong to the other. |
 | | In a permeable virtual LAN, any ring that is connected directly to a ring that belongs to the virtual LAN can forward broadcast frames onto the virtual LAN, and receive broadcast frames from inside the virtual LAN. |
| www.cisco.com /univercd/cc/td/doc/product/rtrmgmt/tv/tv4/cat16mgr/vlan.htm (934 words) |