Taking Clusters And Servers On/Off Line; Taking A Cluster On/Off Line; Bringing An Slb Cluster On Line; Taking An Slb Cluster Off Line - Alcatel-Lucent OmniSwitch 6800 Series Network Configuration Manual

Configuring Server Load Balancing

Taking Clusters and Servers On/Off Line

Alcatel-Lucent's Server Load Balancing (SLB) show commands provide tools to monitor traffic and trou-
bleshoot problems. These commands are described in
Statistics" on page 34-35. If problems are identified, you can use the
command to administratively disable an entire SLB cluster or the
administratively disable individual servers within an SLB cluster. These commands are described in the
following sections.

Taking a Cluster On/Off Line

The following subsections describe how to bring an SLB cluster on line and how to take it off line with the
ip slb cluster admin status

Bringing an SLB Cluster On Line

You can bring an administratively disabled SLB cluster on line with the
command by entering ip slb cluster, the name of the SLB cluster, and admin status enable.
For example, to bring an SLB cluster called "WorldWideWeb" on line, you would enter:
-> ip slb cluster WorldWideWeb admin status enable

Taking an SLB Cluster Off Line

You can take a Server Load Balancing (SLB) cluster off line with the
command by entering ip slb cluster, the name of the SLB cluster, and admin status disable.
For example, to take an SLB cluster called "WorldWideWeb" off line, you would enter:
-> ip slb cluster WorldWideWeb admin status disable

Taking a Server On/Off Line

The following subsections describe how to bring a physical server on line and how to take it off line with
the ip slb server ip cluster
Note. The ip slb server ip cluster command is also used to add or remove physical servers from an SLB
cluster (see "Assigning Servers to and Removing Servers from a Cluster" on page

Bringing a Server On Line

You bring an administratively disabled server in an SLB cluster on line with the
command by entering ip slb server, the IP address of the server you want to enable in dotted decimal
format, cluster, the name of the SLB cluster to which the server belongs, and admin status enable.
For example, to administratively enable a server with an IP address of 10.105.16.121 that belongs to an
SLB cluster called "Web_Server", you would enter:
-> ip slb server ip 10.105.16.121 cluster Web_Server admin status enable
OmniSwitch 6800/6850/9000 Network Configuration Guide
command.
command.
Taking Clusters and Servers On/Off Line
"Displaying Server Load Balancing Status and
ip slb cluster admin status
ip slb server ip cluster
ip slb cluster admin status
ip slb cluster admin status
March 2008
command to
34-26).
ip slb server ip cluster
page 34-29