3Com SERVER LOAD BALANCER 3C16120 User Manual page 59

6 Choose a algorithm. The default algorithm is Round-robin. Table 10
describes the available algorithms.
Table 10 Supported Algorithms and Description
Supported Algorithms
Destination
Round Robin
Weighted Round Robin
Least Connections
Weighted Least
Connections
7 Leave Sticky Mode field set to Off.
8 The default health check is Ping, click Next. Other available health checks
are:
Ping — Server Load Balancer periodically pings each server using ICMP
I
Echo. The number of retries are configurable. If successive ping
attempts fail, the server is marked as down and is removed from the
pool of available servers.
Creating a Cache Profile (Optional)
Description
The Destination IP address of the client's packets is
hashed and used as an index to an array of active
servers bound to the service. This is appropriate for
redirection of sessions between a smaller set of clients
and a larger set of servers, for example, local users of
the extraNet, or the World-Wide Web
Each new connection is assigned to the next server in
the list. This distributes connections evenly between
the servers.
Similar to Round Robin, except that N consecutive new
connections are assigned to a server before selecting
the next server in the list, where N is the weight
assigned to the server. Servers with higher
performance or capacity should be assigned higher
weight.
The weight assigned to the server is assigned using the
Assign caches to services (Advanced)... window. A
weight field is provided.
Each new connection is assigned to the server having
the fewest number of open connections. If several
servers have the same low number of open
connections, then the new connection is sent to the
server that was least recently sent a new connection
Similar to Least Connections, except that N consecutive
new connections are assigned to a server before next
selecting the server with the least number of open
connections, where N is the weight assigned to the
server
59