User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
17-13
B
ALANCING
M
ETHODS
protocol is enabled, the subnet containing the VIPs is propagated through the
network.
B
ALANCING
M
ETHODS
A load balancing method defines, in part, the logic that the switch uses to determine
which node should receive a connection hosted by a particular virtual server. Individual
load balancing methods take into account one or more dynamic factors, such as current
connection count. Because each application of SLB is unique, node performance
depends on a number of different factors. We recommend that you experiment with
different load balancing methods, and choose the one that offers the best performance
in your particular environment.
The switch supports the following load balancing methods:
• Round-robin
• Ratio
• Least connections
• Priority
R
OUND
-R
OBIN
The default load balancing method is round-robin, and it simply passes each new
connection request to the next server in line, eventually distributing connections evenly
across the array of machines being load balanced. Round-robin works well in most
configurations, especially if the equipment that you are load balancing is roughly equal
in processing speed and memory.
To configure round-robin, use this command:
config slb pool <poolname> lb-method round-robin
R
ATIO
If you are working with servers that differ significantly in processing speed and
memory, you may want to switch to the ratio load balancing method. In ratio, the
switch distributes connections among machines according to ratio weights that you set,