Dell PowerConnect 6224P User's Guide - Page 550
Routing, NSF OSPF Summary, Enabling and Disabling NSF
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failure), to correct faulty system behavior which cannot be corrected through less severe management actions, or other reasons. An unplanned restart is an unexpected failover caused by a fatal hardware failure of the management unit or a software hang or crash on the management unit. To configure the OSPF graceful restart feature, click Routing →OSPF →NSF OSPF Summary in the navigation tree. Figure 9-21. NSF OSPF Summary • Support Mode - Enables or disables OSPF to perform graceful restarts. The following options are available: - Planned- OSPF will perform a graceful restart for planned restarts. A planned restart is a failover initiated by the administrator (see "Enabling and Disabling NSF" on page 258). - Always- OSPF will perform a graceful restart for all planned and unplanned warm restart events. - Disable-OSPF will not perform graceful restarts. • Restart Interval - The grace period during which a neighboring router will be in the helper state after receiving notice that the management unit is performing a graceful restart. • Restart Status - Displays the restart status of OSPF Helper feature. The possible values are: - Not Restarting - Planned Restart - Unplanned Restart • Restart Age (secs) - Displays the amount of time since the last restart occurred. • Restart Exit Reason - Displays how the master unit on the stack last started up. The possible values are: - Not Attempted-Graceful restart has not been attempted. - In Progress-Restart is in progress. - Completed- The previous graceful restart completed successfully. 550 Configuring Routing