Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 522)

510 Brocade Mobility RFS Controller System Reference Guide
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8. Refer to the Protocol Extension field to define the following:
9. Select OK to save the changes made to the VRRP configuration. Select Reset to revert to the
last saved configuration.
Critical Resources Configuration
Critical resources are device IP addresses or interface destinations on the network defined as
critical to the health of the network. The critical resource feature allows for the continuous
monitoring of these addresses. A critical resource, if not available, can result in the network
suffering performance degradation. A critical resource can be a gateway, AAA server, WAN interface
or any hardware or service on which the stability of the network depends. Critical resources are
pinged regularly. If there’s a connectivity issue, an event is generated stating a critical resource is
unavailable. By default, there’s no enabled critical resource policy and one needs to be created and
implemented.
Critical resources can be monitored directly through the interfaces on which they’re discovered. For
example, a critical resource on the same subnet as an Access Point can be monitored by its IP
address. However, a critical resource located on a VLAN must continue to monitored on that VLAN.
Critical resources can be configured for Access Points and wireless controllers using their
respective profiles.
To define critical resources:
1. Select Configuration > Profiles.
Preempt Select this option to ensure a high priority backup router is available to preempt a lower
priority backup router resource. The default setting is enabled. When selected, the Preempt
Delay option becomes enabled to set the actual delay interval for pre-emption. This setting
determines if a node with a higher priority can takeover all the Virtual IPs from the nodes with
a lower priority.
Preempt Delay If the Preempt option is selected, use the spinner control to set the delay interval (in
seconds) for pre-emption.
Interface Select this value to enable/disable VRRP operation and define the VLAN (1 - 4,094) interface
where VRRP is running. These are the interfaces monitored to detect a link failure.
Sync Group Select the option to assign a VRRP sync group to this VRRP ID’s group of virtual IP addresses.
This triggers VRRP failover if an advertisement is not received from the virtual masters that
are part of this VRRP sync group. This setting is disabled b y default.
Network Monitoring:
Local Interface Select the wwan1, pppoe1 and VLAN ID(s) as needed to extend VRRP monitoring to these
local interfaces. Once selected, these interfaces can be assigned an increasing or decreasing
level or priority for virtual routing within the VRRP group.
Network Monitoring:
Critical Resource Name Assign the priority level for the selected local interfaces. Backup virtual routers can increase
or decrease their priority in case the critical resources connected to the master router fail,
and transition to the master state. Additionally, the master virtual router can lower its priority
if the critical resources connected to it fails, so the backup can transition to the master state.
This value can only be set on the backup or master router resource, not both. Options include
None, increment-priority and decrement priority.
Network Monitoring:
Delta Priority Use this setting to decrement the configured priority (by the set value) when the monitored
interface is down. When critical resource monitoring, the configured value is incremented by
the value defined.