Alcatel-Lucent 6850-48 Guida Di Riferimento

Server Load Balancing Commands

page 57-4

OmniSwitch CLI Reference Guide

Configures a Server Load Balancing (SLB) cluster on a switch.

ip slb cluster name {vip ip_address | condition string} [l3 | l2]

no ip slb cluster name

The name of the Server Load Balancing (SLB) cluster. The name can 
consist of a maximum of 23 characters. Spaces must be enclosed within 
quotation marks (e.g., “mail server”).

The Virtual IP (VIP) address for the Server Load Balancing cluster. This 
IP address must be in dotted decimal format.

The name of an existing QoS policy condition that identifies the Server 
Load Balancing cluster.

Specifies Layer 3 Server Load Balancing mode. The source and destina-
tion MAC and TTL of each packet is modified before the packet is 
bridged or routed to the server. 

Specifies Layer 2 Server Load Balancing mode. Packets are not modi-
fied before they are bridged to the server. This parameter is only avail-
able when using the condition parameter.

OmniSwitch 6400, 6850, 9000, 9000E

• Use the no form of this command to delete a Server Load Balancing cluster.

• The VIP address of the SLB cluster must be an address that is in the same subnet as the servers.

• Specifying the l3 parameter when configuring a VIP cluster is not required. VIP clusters only use the 

Layer-3 mode to route traffic to the servers. Layer-2 mode is not supported with this type of cluster.

• The QoS policy condition must exist before it is assigned to an SLB cluster. Use the policy condition 

command to create the QoS policy condition. See the “QoS Policy Commands” chapter for more infor-
mation.

• SLB clusters are not active if the Server Load Balancing feature is disabled for the switch. Use the 

 command to enable this feature. Note, however, that it is possible to configure clusters and 

add or remove servers from a cluster even when SLB is disabled for the switch.