Color blocking logic mechanism for a high-performance network switch
US5764636A · kind A · utility
244Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Mar 28, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/76
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A color blocking logic (CBL) mechanism implements spanning tree states with respect to data frames transported between port interface circuitry over a link connecting different switches in a network. Each port interface circuit preferably supports multiple virtual local area network (VLAN) designations and associates those VLAN designations with data frames transmitted to and from the switch over the link. The CBL mechanism cooperates with a forwarding engine of the switch to selectively enable the port interface circuit to receive certain VLAN-designated frames, and to discard others, in an efficient and cost-effective manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.