Zte ZXR10 8900 Series User Manual page 127

Parameter
<string2>
balance
rr|wrr|lc|wlc|sh|dh
backup
<number>
Command Illustration:
During communication process, if one server is deleted from
the load balancing group, connections on this server will not
be disconnected and only after re-establishment of connection,
can configuration of load balancing group take effect.
If connected server gets disconnected during communication,
client will not be connected to another server in load balancing
group unless re-establishing connection.
When load balancing mode is set to weight balance algorithm,
the total number of connections is assigned according to weight
value. Here weight value is not priority.
"dh" and "sh" algorithms proceed HASH query according to IP
address. Only when source IP and destination IP are disperse,
can connections be allocated to different servers averagely.
Load balancing server can be defined before defining load bal-
ancing group. For details, please refer to section Configuring
High Availability.
2. Modifying one load balancing group.
Command
ZXR10_FW.define #virtual_server
modify name <string1>[server
<string2>][balance<rr|wrr|lc|wlc|sh|dh
>][backup <number>]
Confidential and Proprietary Information of ZTE CORPORATION
Chapter 9 Load Balancing Configuration
Description
This is one string, indicating the name of
server. As for multiple server names, space
is used between each two server names
and all server names are quoted with single
quotes, such as 'server1 server2'.
This sets load balancing mode. Six modes
are available: rr, wrr, lc, wlc, sh and dh.
"rr" indicates selecting server in load
balancing group sequentially; "wrr"
indicates selecting load balancing server in
sequence of weight; "lc" indicates selecting
server according to response time, the
faster the response time, the higher the
priority; "wlc" indicates selecting server
according to response time and weight;
the shorter the response time and the
larger the weight, the larger the priority;
"sh" indicates selecting server with HASH
query according to source address; "dh"
indicates selecting server with HASH query
according to destination address.
This specifies ID of backup load balancing
group. When all servers in one group stop
providing services, data in servers of load
balancing group will be backed up to the
specified load balancing group.
This is one number, indicating ID of load
balancing group.
Function
This modifies one load
balancing group.
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