•Configuring Management Neighbors [page 64]
•Configuring Maintenance Mode [page 68]
•Configuring Cross-Landscape Fault Correlation [page 70]
•Configuring Port Fault Correlation [page 72]
•Configuring Port Status Monitoring [page 80]
•PollPortStatus Feature [page 86]
•Wide Area Link Monitoring [page 87]
•Port Layer Alarm Suppression [page 90]
•Port Criticality [page 90]
•Live Pipes [page 91]
•Automatic Port Status Alarm Clearing [page 93]
•Suggested Port Fault Settings for Optimal Fault Notification [page 94]
Configuring General Fault Isolation Parameters
The Fault Isolation model is a model in SPECTRUM’s database which stores information about various aspects of SPECTRUM’s fault isolation
functionality. The Fault Isolation Model Information view allows you to configure these settings. To access the Fault Isolation Model Information view:
1. Highlight the VNM icon and select Configuration from the Icon Subviews menu. This brings up the Landscape Configuration view.
2. In the Configure/Information panel, double-click the Fault Isolation entry, select it and click OK. The Fault Isolation Model Information view (Figure 23) is displayed.
Figure 23: The Fault Isolation Model Information View
The following fields can be configured:
ICMP Support Enabled
This field controls the value of the Fault Isolation model’s ICMP_SUPPORT attribute. This attribute is used during fault isolation to determine if an attempt should be made to contact a device using the ICMP protocol when trying to ascertain the fault status of the device. When the ICMP_SUPPORT attribute is enabled (set to TRUE) on the Fault Isolation model, SPECTRUM will look at the setting of the ICMP_SUPPORT attribute at the device level. If ICMP support is also enabled on the device, SPECTRUM will attempt to contact the device using the ICMP protocol. However, when ICMP_SUPPORT is disabled (set to FALSE) on the Fault Isolation model, this setting will take precedence over the setting at the device level and will prevent any attempt to contact the device using the ICMP protocol for fault isolation.
The default setting for this field is TRUE.
ICMP Timeout
The amount of time (in milliseconds) that SPECTRUM will wait for a
response to an ICMP ping. If a response is not received within this period of time, SPECTRUM assumes the device has timed out. The default setting for this item is 3000ms (3 seconds).
ICMP Trycount
This field specifies the total number of attempts to contact a device using the ICMP protocol that will be made before SPECTRUM determines the device is down.
Lost Device Trycount
The number of retries that SPECTRUM attempts for each SNMP request sent to a device after contact with the device is lost. The default setting for this field is 1.
Contact Lost Model Destruction
This field controls whether a device is automatically destroyed when its CONTACT_STATUS is set to false. When this field is set to Enabled, models that have had their CONTACT_STATUS set to lost for a specified period of time (see the Destruction Time Delay field) will be destroyed automatically.
When this item is set to Disabled, models will never be automatically destroyed as a result of the value of the CONTACT_STATUS attribute. The default setting for this field is Disabled.
Destruction Delay Time
This field specifies the length of time (in seconds) that a model must continuously have its CONTACT_STATUS attribute set to lost before it is automatically destroyed. The default value is 604800 seconds (7 days).
Destruction Event Generation
This field controls whether an event message is created when a model is automatically destroyed. When this field is set to Enabled, an event will be generated each time a model is destroyed as a result of its CONTACT_STATUS being continuously set to lost for the length of time specified in the
Destruction Delay Time field. When this field is set to Disabled, no event message will be generated. The default setting for this field is Enabled.
Router Redundancy Retry Count
This field enables you to set the number of times SPECTRUM will attempt to contact a router’s redundant IP addresses if contact is lost with its primary address (see Redundancy [page 152]). The polling interval setting
determines the amount of time between each attempt. The default setting for this field is 2.
Port Fault Correlation
This field allows you to configure the port fault correlation feature.See Port Fault Correlation Options [page 72] for an explanation of each of the configuration options.
Unresolved Fault Alarm Disposition
If SPECTRUM’s information about the connectivity of your network model is incomplete, SPECTRUM may be unable to find the root cause of a network outage. In this case, the status of all devices affected by the outage is set to gray, and a red unresolved fault alarm is generated. This alarm indicates that SPECTRUM has lost contact with a group of devices, but was unable to pinpoint the cause.
All of the devices to which SPECTRUM has lost contact are listed in the impact scope of the alarm. The model name and other details of the lost devices also appear in the event that generated the alarm.
The Unresolved Fault Alarm Disposition field allows you to control how the unresolved fault alarm is generated. When set to Fault Isolation Model, the alarm will be generated on the Fault Isolation model. When set to Device In Fault Domain, the alarm will be generated on one of the devices with which SPECTRUM has lost contact. When determining which device to generate the alarm on, SPECTRUM looks for the device with the highest criticality. If the highest criticality is shared by two or more devices, SPECTRUM generates the alarm on the first of these devices that it finds. If all devices have the same criticality, then SPECTRUM chooses the device with the lowest model handle.