Apparatus and method to hide transit only multi-access networks in OSPF
US9356856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2013 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jul 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0407
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a first router determines whether a network coupling the first router to one or more second routers is transit-only, wherein transit-only indicates connecting only routers to provide for transmission of data from router to router. When the network is transit-only, the first router generates an Open Shortest Path First (OSPF) Link State Advertisement (LSA) that includes an address for the network and a designated network mask. The designated network mast operates as a transit-only identification that indicates the address should not be installed in a Routing Information Base (RIB) upon receipt of the OSPF LSA at the one or more second routers. When the network is not transit-only, the first router generates an OSPF LSA that includes the address for the network but does not include the designated network mask, to permit installation of the address in a RIB upon receipt of the OSPF LSA at the one or more second routers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.