Distributed load sharing

Details Distributed load sharing Distributed load sharing

1988-01-15

1989-03-07

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

34082502, H04J 302, H01H 6700

Patent

active

048113379

ABSTRACT:
Methods and apparatus for exchanging frames between bridges distribute load sharing in a communications network. The communications network is of the kind in which bridges, and related stations and local LANS, e.g. Ethernet LANs and 802 LANs, can be linked by paths in a plurality of sub-networks and wherein the bridges are linked to support a Spanning Tree Protocol (STP) which elects one bridge as a root and then with respect to said root, computes and utilizes one and only one loop-free set of primary paths between all bridges. Remaining paths, i.e. paths other than said STP primary paths, between the bridges are examined as possible sub-network paths for a Distributed Load Sharing (DLS) configuration in which frames exchanged between certain stations can utilize more than the STP one set of primary paths. Certain ones of the remaining paths are selected as DLS paths under certain conditions and frame are routed over a selected DLS path only when those frames meet certain criteria.

REFERENCES:
patent: 4347498 (1982-08-01), Lee et al.
patent: 4399531 (1983-08-01), Grande et al.
patent: 4627052 (1986-12-01), Hoare et al.

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