Control and distribution protocol for a portable router framework
US6977924B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A control and distribution protocol (CDP) is implemented for transport across a backplane bus, through a high-speed serial link or through a switching fabric connection. The protocol includes an intra-system transport of dynamic routing protocol (DRP) IP messages, the distribution of routing information within the router, the transport of control and maintenance messages, and the transport of IP and multi-protocol label switching (MPLS) traffic between ingress and egress ports. The protocol further includes a dynamic routing and control driver which interacts with dynamic routing control applications to exchange messages that are to be transmitted to packet flow processors and to handoff messages received from packet flow processors. A packet flow processor driver which services messages carried between the dynamic routing control and packet flow processors. An IP traffic interface provides transfer of IP L3/L2 protocol data unit (PDU) header primitive from the packet flow processors. Both the DRC driver and PFP driver include a framework transport interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.