A multiprocessor bridge construction allows ports that are operable under a spanning tree protocol to coexist with ports that are inoperable under the spanning tree protocol, thus making it possible to improve the frame-repeating capability of the bridge, to equip the bridge with a large number of ports, and to divide the spanning tree topology into a plurality of portions to be managed.
6,246,680 Highly integrated multi-layer switch element architecture
* 6,128,666 Distributed VLAN mechanism for packet field replacement in a multi-layered switched network element using a control field/signal for indicating modification of a packet with a database search engine
6,088,356 System and method for a multi-layer network element
6,081,512 Spanning tree support in a high performance network device
6,081,522 System and method for a multi-layer network element
* 6,052,738 Method and apparatus in a packet routing switch for controlling access at different data rates to a shared memory
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