![]() As well, the virtual server can appear as the IP address of a single port or service of a server farm. ![]() The virtual server can masquerade as the IP address for all TCP and UDP ports of the real server farm.New connections are rate limited and allowed to increase gradually to keep the server from becoming overloaded. With weighted least connections, SLB controls the access to a new real server, providing a slow start function.SLB assigns new connections to the real server with the number of active connections farthest below its capacity. Each real server is assigned a weight m, where its capacity for active connections is m divided by the sum of all server weights. Weighted least connections: SLB assigns new connections to the real server with the least number of active connections.For a weight n, a server is assigned n new connections before SLB moves on to the next server. Weighted round-robin: Each real server is assigned a weight that gives it the capability to handle connections, relative to the other servers.Server load balancing is performed by one of these methods: As clients open new connections to the virtual server, SLB decides which real server to use based on a load-balancing algorithm.
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