Address learning in a layer two bridging network
US8520680B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Oct 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4662
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network system includes a provider backbone bridged network (PBBN) and a multi-homed provider bridge network (PBN) having an L2 switch that operate as backboned edge bridge (BEBs) to bridge L2 packets between the PBN and the PBBN. The L2 switch executes a PBBN routing instance and a separate PBN routing instance. A plurality of packet-forwarding engine (PFE) of the L2 switch are configured to forward L2 packets between interfaces of the PBN routing instance and the PBBN routing instance. The PFEs store L2 network address tables that specify L2 network addresses reachable by the interfaces. The PFEs of the L2 switch are configured to selectively share L2 network addresses between the L2 network address tables of the PBN routing instance and the L2 network address tables of the PBBN routing instance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.