8RELEASE NOTE INFORMATION

 

Redundant Configuration

 

When resetting Device A, the primary IP addresses (for both Device A &

 

Device B), the subnet mask and the default router settings are preserved.

 

The device redundancy setting is set to none and Device B synchronizes to

 

this configuration setting. When Device B discovers that it is no longer

 

part of a redundant configuration, all of the settings are reset to factory

 

defaults including the primary IP address, subnet mask and default router.

 

In redundant configurations, resetting Device B’s configuration is not

 

recommended as Device A is unaffected and Device B becomes

 

unreachable due to the loss of its primary IP address.

Clock Settings

When Device A is configured, it does not pass the configuration for set

 

clock to Device B. You must set the clock on Device B using the CLI.

 

 

Redundant

The following are known issues that pertain to the Server Load Balancer

Configuration

and the Server Load Balancer Plus when configuration for redundancy.

Issues

The Server Load Balancer and Server Load Balancer Plus support the

 

 

following redundant configurations:

 

Active-Passive

 

Active-Active

Virtual Router

The Server Load Balancer and Server Load Balancer Plus use the Virtual

Redundancy Protocol

Router Redundancy Protocol (VRRP) to determine which devices should

Priority Generation

be in Active or Standby modes.

The message log, as shown below, for the Server Load Balancer and Server Load Balancer Plus contains entries that dynamically describe the state and operation of the redundant configurations.

2001-01-01 12:00:00 INFO <Ext.Prot.Vrrp> VRID 1: Priority: 40 Changing to Priority: 41

The dynamic update of the priority field is an indication of the process that the Server Load Balancer and Server Load Balancer Plus continuously performs to determine its overall network connectivity. In comparing this priority field with its peer’s, the unit with the greatest network connectivity value is deemed the Active device.

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HP SuperStack 3 Load Balancer Appliance manual Redundant, Configuration, Issues