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Configure SNMP Trap Sink2
This option allows the user to specify a list of hosts to which a SNMPv2 trap will be sent when a trap is
generated.
5.6. Enable/Disable L7 persistency state failover
Note: This feature is only available on a HA cluster configuration
When an L7 persistency option has been enabled, the active LoadMaster will automatically send connection
information to the standby machine so that if the active machine fails, the standby machine can take over the
processing of requests as if nothing had happened. The connection information is sent using a Multicast
protocol. The parameters for this may be changed under “Multicast Configuration”.
This toggle option will either enable or disable the transfer of L7 connection information. If this feature takes
too much bandwidth or is not required, then it may be safely disabled.
5.7. Enable/Disable L4 connection state failover
Note: This feature is only available on a HA cluster configuration
When a Virtual Service is not using persistency or only IP source address persistency, the active LoadMaster
will automatically send connection information to the standby machine so that if the active machine fails, the
standby machine can take over the processing of requests as if nothing had happened. The connection
information is sent using a Multicast protocol. Only the Ethernet interface parameter under “Multicast
Configuration” has any affect on this option.
This toggle option will either enable or disable the transfer of L4 connection information. If this feature takes
too much bandwidth or is not required, then it may be safely disabled.
5.8. Multicast Configuration
Note: This option is only available on a HA cluster configuration when the L7 persistency state failover or L4
connection failover features are enabled.
With this option, the multicast address and Ethernet interface, which is to be used for the transfer of
connection information, can be changed. When using the LoadMaster in single-armed mode, the Ethernet
interface cannot be changed.
5.9. HA timeout
Note: This option is only available on a HA cluster configuration.
With this option, the time it takes a HA cluster to detect a failure can be adjusted. A value between and 1 and
5 can be set. The default value is 1. A lower value will detect failures sooner, while a higher value gives better
protection against a DOS attack.
6. Packet Filter & Access Control Lists
6.1. Access control Lists
The LoadMaster supports a “blacklist” Access Control List system. Any host or network entered into the Access
Control List will be blocked from accessing any service provided by the LoadMaster.
The LoadMaster also has a packet filter. When enabled the packet filter blocks all IP packets which are not
directed at a configured port.
The Access Control list is only enabled when the packet filter is enabled. By default the Access Control List is
disabled. This means that all source IP addresses are accepted by the LoadMaster.