System and method for routing network traffic through weighted zones
US7480735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2003 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jan 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for routing between nodes in a network or subnet. An end node is associated with multiple identifiers for routing purposes, and therefore multiple paths may exist between two end nodes. Network nodes and components (e.g., switches) are grouped into fault zones. Each physical enclosure of network entities may comprise a separate fault zone. For each zone through which a path between two nodes passes, a weight is calculated equal to the number of paths between the nodes that traverse that zone. Path weights are calculated for each path between the nodes, equal to the sum of the weights of each zone in the path. To improve network fault tolerance, new paths may be designed to avoid fault zones and existing paths with high weights. Instead of fault zones, other criteria may be used to assign weights, such as mean time between failures (MTBF), cost, speed, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.