Troxell Law Office, PLLC
Method and apparatus for packet forwarding in a switch controller
The present invention provides a method and apparatus for packet forwarding within a switch controller. In addition to unicast and broadcast forwarding, the method and apparatus can also analyze and forward IP multicast packets without the need of a CPU and a separate multicast address table, thereby enabling IP multicasting for the switch controller. Wherein, specific packet parsing and updating rules are used to analyze IP multicast control packets, and a multicast router or an address table is updated based on the analyzing result. IP multicast packets is then forwarded according to the updated tables. Moreover, with an extra flag bit set in each address table entry, unicast and multicast forwarding can share the same address table.
Realtek Semiconductor Corp.
H H
H04L H04L
inventional inventional
Chun-Feng Jin-Ru
Liu Chen