US Patent No: 5,684,800

Number of patents in Portfolio can not be more than 2000

Method for establishing restricted broadcast groups in a switched network

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Abstract

Method and apparatus for establishing restricted broadcast groups in a switched network. The method assigns different virtual LAN identifiers (VLAN-IDs) to different subsets of associated end systems or access ports. Tables are maintained for mapping the VLAN-IDs with associated end systems and access ports. When a broadcast packet is received at a first switch, it is encapsulated with a VLAN header, including the VLAN-IDs, and sent out a multicast channel to all other switches in the network (domain). The original packet is sent out the other access ports of the receiving switch for the designated VLAN-IDs. The switches receiving the VLAN packet remove the header and send the original packet out access ports associated with the VLAN-IDs extracted from the header. The method provides a mechanism for forwarding broadcast packets of a protocol not supported by the switching mechanism, as well as multicast packets and unicast packets from undiscovered end systems.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ENTERASYS NETWORKS, INC.ROCHESTER, NH403

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andlauer, Phil Londonderry, NH 5 1033
Dobbins, Kurt Bedford, NH 19 2114
Skubisz, Michael Durham, NH 11 1002

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