Modifying The Ping Retries; Modifying The Relative Weight Of A Physical Server; Configuring A Server In An Slb Cluster As A Backup Server - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Configuring Server Load Balancing

Modifying the Ping Retries

The default number of ping retries is 3. You can modify this value from 0 to 255 with the
ping retries command by entering ip slb cluster, the name of the SLB cluster, ping retries, and the
user-specified number of ping retries. For example:
-> ip slb cluster Web_Server ping retries 5

Modifying the Relative Weight of a Physical Server

The default weight value assigned to an SLB cluster server is 1. To modify the relative weight of a server,
use the ip slb server ip cluster
you want to modify, cluster, the name of the SLB cluster to which this server belongs, weight, and the
value for the relative weight, which can range from 0 (the switch will prevent this server from being
assigned any new connections) to 32, with 32 having the greatest relative weight.
For example, to set the relative weight of a server with an IP address of 10.105.16.121 that belongs to an
SLB cluster called "Web_Server" to 5 enter:
-> ip slb server ip 10.105.16.121 cluster Web_Server weight 5
Server weights are relative. For example, if Servers A and B have respective weights of 5 and 10 within a
cluster, Server A would get half the traffic of server B. Since weights are relative, assigning Servers A and
B respective weights of 1 and 2, or 5 and 10, etc., would produce identical results.
Note. The ip slb server ip cluster command is also used to add or remove servers from an SLB cluster
(see "Assigning Servers to and Removing Servers from a Cluster" on page
administratively enabling and disabling a server in an SLB cluster (see
page 44-30).

Configuring a Server in an SLB Cluster as a Backup Server

You can configure a server in a cluster as a backup server with the
command by entering ip slb server ip, the IP address of the server, cluster, the name of the SLB cluster,
weight and weight value as zero.
For example, to configure a server with an IP address of 10.105.16.118 in an SLB cluster called
"Web_Server" as a backup server, enter:
-> ip slb server ip 10.105.16.118 cluster Web_Server weight 0
Assigning a weight of 0 (zero) to a server will prevent this server from being assigned any new
connections.This server will be a backup server.
OmniSwitch AOS Release 6 Network Configuration Guide
command by entering ip slb server, the IP address of the physical server
September 2009
Modifying Optional Parameters
ip slb cluster
44-27) and for
"Taking a Server On/Off Line" on
ip slb server ip cluster weight
page 44-29