Inter-LAN connecting device with combination of routing and swit

Details Inter-LAN connecting device with combination of routing and swit Inter-LAN connecting device with combination of routing and swit

1996-05-31

1998-09-01

Safourek, Benedict V.

Multiplex communications

Pathfinding or routing

Through a circuit switch

370402, H04L 1246

Patent

active

058020470

ABSTRACT:
When a host connected to physical ports carries out communication outside virtual LANs formed by grouping the physical ports, a CPU for a switch determines a MAC address of the router as a destination MAC address corresponding to logic ports grouped in the same virtual LAN including a receive port to receive a packet and writes the packet and a virtual LAN number attached thereto into a first buffer for switch-router communication. A CPU for a router writes the packet written in the first buffer for switch-router communication along with the virtual LAN number into a second buffer for switch-router communication. The CPU for the switch writes the packet written in the second buffer for switch-router communication into a third buffer for physical port transmit-receive to transmit the packet to the physical ports.

REFERENCES:
patent: 5485455 (1996-01-01), Dobbins et al.
patent: 5579308 (1996-11-01), Humpleman

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