Differential services support for control traffic from privileged nodes in IP networks
US7920564B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2006 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Aug 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network device receives a packet at a network interface and determines whether the packet represents control traffic. The network device also determines whether the packet is received from a privileged node. To achieve this, a source address is extracted from the packet, a query of the source address is performed in an address database, and a node status attribute associated with the source address is returned from the address database. If the packet represents control traffic and is received from a privileged node, the network device may modify one or more attributes of associated with the packet. These attributes may include a traffic class, drop precedence, or bandwidth restriction. Packets that represent control traffic may be placed in a priority queue for further processing based upon their modified attributes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.