Difference between revisions of "LVS/TUN"
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| − | It stands for Linux Virtual Server via IP Tunneling, an IP load balancing technology implemented in LVS. | + | It stands for Linux Virtual Server via IP Tunneling, an IP [[load balancing]] technology implemented in LVS. |
IP tunneling (IP encapsulation) is a technique to encapsulate IP | IP tunneling (IP encapsulation) is a technique to encapsulate IP | ||
datagram within IP datagram, which allows datagrams destined for one | datagram within IP datagram, which allows datagrams destined for one | ||
IP address to be wrapped and redirected to another IP address. This | IP address to be wrapped and redirected to another IP address. This | ||
| − | technique can be used to build a virtual server that the load balancer | + | technique can be used to build a virtual server that the [[load balancer]] |
tunnels the request packets to the different servers, and the servers | tunnels the request packets to the different servers, and the servers | ||
process the requests and return the results to the clients directly, | process the requests and return the results to the clients directly, | ||
thus the service can still appear as a virtual service on a single IP | thus the service can still appear as a virtual service on a single IP | ||
address. | address. | ||
| + | |||
| + | == Real Server == | ||
| + | |||
| + | For ARP issue in the LVS/TUN cluster, see the article [[ARP Issues in LVS/DR and LVS/TUN Clusters]]. | ||
| + | |||
| + | If real servers run UDP service, it is probably worth reading the article [[UDP service binding issue in LVS/DR and LVS/TUN]]. | ||
== Examples == | == Examples == | ||
Latest revision as of 15:05, 22 October 2007
It stands for Linux Virtual Server via IP Tunneling, an IP load balancing technology implemented in LVS.
IP tunneling (IP encapsulation) is a technique to encapsulate IP datagram within IP datagram, which allows datagrams destined for one IP address to be wrapped and redirected to another IP address. This technique can be used to build a virtual server that the load balancer tunnels the request packets to the different servers, and the servers process the requests and return the results to the clients directly, thus the service can still appear as a virtual service on a single IP address.
Real Server
For ARP issue in the LVS/TUN cluster, see the article ARP Issues in LVS/DR and LVS/TUN Clusters.
If real servers run UDP service, it is probably worth reading the article UDP service binding issue in LVS/DR and LVS/TUN.
Examples
See Also
- See more information about Linux Virtual Server via IP Tunneling at http://www.linuxvirtualserver.org/VS-IPTunneling.html
- LVS-TUN troubleshooting HOWTO from Julian
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