Configure NLB support

Use Microsoft Network Load Balancing (NLB) to share the workload among multiple clustering servers. For information about software scaling capabilities, see Release Notes for VOSS.

Before you begin

For all modes, configure an IP address on the VLAN enabled with NLB.
To switch between Unicast NLB and Multicast NLB, you must first disable the NLB support.

About this task

Use the following procedure to configure NLB support on an IP interface to enable or disable NLB support.

The default value is NLB support disabled.

Note

SPBM supports Network Load Balancing (NLB) Unicast and Multicast modes.

Procedure

Enter VLAN Interface Configuration mode:

enable

configure terminal

interface vlan <1–4059>
Enable NLB support on an interface:

nlb-mode unicast

Or,

nlb-mode multicast

To switch from one nlb-mode to another, you must first disable the NLB support, and then enter the new nlb-mode.
Optional: Disable NLB support on an interface:

no nlb-mode

Example

Configure unicast mode for VLAN 2, and then switch to multicast mode.

Switch:1(config)#interface vlan 2
Switch:1(config-if)#nlb-mode unicast
Switch:1(config-if)#no nlb-mode
Switch:1(config-if)#nlb-mode multicast