Patent ID: 6101188
Filing Date: 2000-08-08
Classification: H04L

Abstract:
An internetworking router for a LAN switching hub apparatus comprising:an address learning table which holds as a set for a certain period of time a source second layer address for a packet received from a plurality of LAN interfaces and the LAN interface of said plurality of LAN interfaces which has received said packet;a plurality of bridge groups which construct a plurality of virtual LANs by arbitrarily combining those of said plurality of LAN interfaces which can be relayed to each other;said plurality of bridge groups having said address learning tables for relaying process independently of each other, andbridge processing means which performs learning processing the address learning table of said plurality of bridge groups to which the received packet belongs to;wherein a destination second layer address is extracted from said received packet and said address learning table is searched using said destination second layer address as a key to specify a LAN interface which corresponds to said destination second layer address from within said plurality of LAN interfaces, and then said packet is relayed and sent out only to said specified LAN interface.