Preventing transient loops in broadcast/multicast trees during distribution of link state information
US7817580B2 · kind B2 · utility
10Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Sep 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/32
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
According to the present invention, methods and apparatus are provided to improve the link state routing protocol (LSRP) to prevent transient loops during topology changes. Broadcast and shared multicast traffic may be dropped on particular ports upon detecting link state change until neighboring nodes have computed routes using updated link state information. An acknowledgment is sent upon receiving a link state record. Sync and sync-ack packets are used to determine when link state information is synchronized with that of peer nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.