System and method for implementing virtual ports within ring networks
US7778205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Apr 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0654
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various systems and methods for implementing virtual ports within ring networks are disclosed. For example, one method involves allocating a logical port that corresponds to a first port and a second port and instantiating a spanning tree protocol instance. The first port and the second port are both assigned to a first ring network. The spanning tree protocol instance selectively blocks the logical port; however, the spanning tree protocol instance is unable to block the first port independently of blocking the second port. Events (e.g., link failures and recoveries) that occur within the ring network are communicated to spanning tree by transitioning the state of the logical port in response to receiving a ring protocol control packet. The spanning tree protocol instance initiates a bridge protocol data unit (BPDU) exchange from the logical port in response to a transition in the state of the logical port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.