Method for assisting load balancing in a server cluster by rerouting IP traffic, and a server cluster and a client, operating according to same
US7003575B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2001 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Oct 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An invention enables network traffic rerouting, while avoiding the necessity of traffic to pass via a cluster's master node. By doing so, neither the master node, nor its communication link become a critical failure or load point, thus disrupting the cluster performance. At first a client sends a packet a certain server of the cluster. If the client is redirected, said server adds a redirection header, defined by a new redirection protocol, to the packet, and returns the packet to the client. A service address and a redirection flag are placed in the header. The client receives the packet with the redirection header and connects to the target server whose address is in the header. From then on, the target server handles the client's packet and the whole transmission related to it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.