Configuring Server Load Balancing Taking Clusters and Servers On/Off Line
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 24-16
Taking Clusters and Servers On/Off Line
Server Load Balancing (SLB) show commands provide tools to monitor traffic and troubleshoot problems.
These commands are described in “Displaying Server Load Balancing Status and Statistics” on
page 24-21. If problems are identified, you can use the ip slb cluster admin-state command to
administratively disable an entire SLB cluster or the ip slb server ip cluster command to 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-state command.
Bringing an SLB Cluster On Line
You can bring an administratively disabled SLB cluster on line with the ip slb cluster admin-state
command by entering ip slb cluster, the name of the SLB cluster, and admin-state enable.
For example, to bring an SLB cluster called “WorldWideWeb” on line, you would enter:
-> ip slb cluster WorldWideWeb admin-state enable
Taking an SLB Cluster Off Line
You can take a Server Load Balancing (SLB) cluster off line with the ip slb cluster admin-state
command by entering ip slb cluster, the name of the SLB cluster, and admin-state disable.
For example, to take an SLB cluster called “WorldWideWeb” off line, you would enter:
-> ip slb cluster WorldWideWeb admin-state 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 command.
Bringing a Server On Line
You bring an administratively disabled server in an SLB cluster on line with the ip slb server ip cluster
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-state 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-state enable
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 24-13).
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