User guide

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XTREME
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OFTWARE
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17-3
SLB C
OMPONENTS
N
ODES
A node is an individual service on a physical server that consists of an IP addresses and
a port number.
P
OOLS
A pool is a group of nodes that are mapped to a corresponding virtual server. Pools are
used to more easily scale large networks that contain many nodes. Pools may be
configured independently and associated with virtual servers in complex ways.
Each pool contains its own load balancing method. When associated with a virtual
server, the pool can not be deleted from the SLB configuration. Pools must be added
before, and deleted after, the virtual servers that reference them. If a pool is not
associated with a virtual server, it is not used for load balancing.
To create a pool, use the following command:
create slb pool <poolname> {lb-method [round-robin | ratio | priority |
least-connections]}
To add nodes to a pool, use the following command:
config slb pool <poolname> add <ipaddress>:<L4Port> {ratio <ratio> |
priority <priority>}
To delete nodes from a pool, use the following command:
config slb pool <poolname> delete <ipaddress>:<L4Port>
V
IRTUAL
S
ERVERS
Virtual servers are the backbone of the SLB configuration. Virtual servers define the
groups of servers or other network equipment that the switch load balances. Before you
configure virtual servers, you need to know:
• The forwarding mode for your network design.
• The name of the pool.
• The virtual IP address.
• The virtual port number.