Packet transfer apparatus
US7430205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Apr 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/168
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A packet transfer apparatus which can switch a communication path for each of a plurality of users using the same L2TP tunnel is provided. Packet transfer apparatuses terminating L2TP contain a table specifying a flow threshold level and a priority level of each subscriber; the amount of packet flow of each subscriber is measured in accordance with the information in the table; if the threshold level is exceeded, the packet communication path is switched in accordance with the priority level specified for each subscriber. The OSPF protocol is used to manage the path information, and the information of a plurality of paths to a destination is stored in a path management table. The path is switched by specifying destination routers with the source routing option in the IP header of a packet after L2TP encapsulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.