Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Chapter 17: High Availability
Configuring HA
For load sharing HA, if remote ping fails on one of the two cluster
members, that member will become unavailable until the remote
interface is again detected. If there is only one active cluster member
and a remote ping failure is detected, that member will audit the failure
and remain in the cluster until another member joins the cluster
(without a ping failure), or until the remote system is detected.
• Click OK to return to the High Availability Advanced Network
Properties window.
b In the Ping the Remote Test IP field, specify how often (in seconds) the
HA cluster will ping the remote address to ensure that an interface and
path are operational.
c In the Consecutive ping failures before takeover field, specify the
number of failed ping attempts that must occur before a secondary/
standby takes over as the primary.
If the primary becomes unavailable immediately after a ping attempt has
been issued, the time it takes for a secondary/standby to take over will
be slightly longer (this is because it will take close to an entire test interval
before the first failure is detected).
d [Conditional] The Force ARP Reset area lists the IP address and burb of
each system that you determine needs to update its ARP cache with the
new cluster alias IP. Use this area to list all systems that are known to
ignore gratuitous ARPs, but that need to know the new cluster alias.
Note: This area is not available if you are configuring Load Sharing HA.
To define a system to be included in the Force ARP Reset list, click
New. The Force ARP Reset window appears. Enter the IP Address and
select the burb for the system, and then click OK.
To modify an entry, select the appropriate entry and click Modify.
To delete an IP address from the list, select the address and click
Delete.
13 The State Change Summary window displays a list of the actions that will
be performed when you click Execute.
Important: The Sidewinder G2 will be automatically rebooted after the
transition process is complete. Carefully review the changes before you click
Execute, as changes you make after initially executing the state change will
require an additional reboot.
If you want to make changes to your configuration before executing, click
Back to navigate to the appropriate window(s) and make the necessary
changes.
When you are satisfied with the summary of changes, click Execute. A
progress bar will appear while the configuration changes are made. If the
transition is successful the Success window appears, displaying the new
state, and the Sidewinder G2 will automatically reboot. Click Finish.
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