Single-homing and active-active multi-homing in a virtual private LAN service
US8724627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Oct 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/68
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, single-homing and active-active multi-homing is provided in a Virtual Private LAN Service (VPLS). A customer edge node actively communicates frames of a same Virtual Private Network (VPN) instance with two or more VPLS nodes of a VPLS network. The VPLS nodes are configured to appropriately forward frames throughout the VPLS network: without looping of a frame sent by the same external node back to the same external node, without flooding multiple copies of a frame to the same external node, and while performing learning of addresses in forwarding tables of said VPLS nodes such that said forwarding tables of said VPLS nodes converge despite frames of the same LAN service being received by said at least two of said VPLS nodes from the same external node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.