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Limiting the size of the MAC address table in a hybrid node

A MAC address table and MAC address technology, applied in the field of 802.1ah provider backbone bridge bridge bridge network, can solve the problems of expensive capital and operating expenses

Inactive Publication Date: 2012-04-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to use VPLS and / or PBB, the entire network needs to be upgraded at once, which can be expensive in terms of capital and operational expenditures

Method used

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  • Limiting the size of the MAC address table in a hybrid node
  • Limiting the size of the MAC address table in a hybrid node
  • Limiting the size of the MAC address table in a hybrid node

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Embodiment Construction

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention, such as network elements, LAN, VPLS, PBB, subnetworks, bridging, provider bridging, packets, MAC, ARP, broadcast, How operands are specified, resource and network partitioning / sharing implementations, types and interrelationships of system components, and logical partitioning / integration choices. However, it will be understood by those skilled in the art that the present invention may be practiced without such specific details. In other instances, control structures, gate level circuits and full software instruction sequences have not been shown in detail in order not to obscure the invention. With the included description, those skilled in the art will be able to implement appropriate functionality without undue experimentation.

[0028] References in the specification to "one embodiment," "an embodiment," "an example embodiment," e...

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Abstract

A method and apparatus to limit the number of MAC addresses stored in the MAC address table of a hybrid bridging node operating two bridging protocols is described. The operation of the two bridging protocols in the hybrid node allows for an incremental transition of a provider bridging network from operating a legacy bridging protocol that shares MAC addresses to a bridging network that operates VPLS and / or PBB bridging protocols. The hybrid bridging node selectively broadcasts unicast packets with unknown MAC addresses from the nodes operating VTLS and / or PBB to nodes operating a legacy bridging protocol.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application 61 / 172661, filed April 24, 2009, entitled "A Pay-As-You-Grow Gradual Cutover Method to Scale a Provider Bridge Network to a VPLS or Provider Backbone Bridging Network" right. [0003] In addition, this application is related to the US patent application 12 / 463364 entitled "An Address Resolution Optimization Procedure to Effect a Gradual Cutover from a Provider Bridge Network to a VPLS or Provider Backbone Bridging Network" filed on May 8, 2009. technical field [0004] Embodiments of the invention relate to the field of bridged networks, and more particularly, to transitioning bridged networks from 802.1ad bridged networks to Virtual Private Local Area Service (VPLS) bridged networks or 802.1ah Provider Backbone Bridging (PBB) bridged networks. Background technique [0005] Provider bridge networks provide customers with bridged access to network ...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L45/741
CPCH04L12/462H04L49/604H04L49/45H04L12/4641H04L45/586H04L49/602
Inventor S·基尼A·塔卡奇
Owner TELEFON AB LM ERICSSON (PUBL)