This object defines the maximum time that DC-OSPF will wait when a Routing Table Manager (such as DC-RTM) fails before purging routes. In some systems, the Routing Table Manager may restart independently of DC-OSPF. For example, it may be administratively deactivated and reactivated, or may be distributed to a separate process that can restart independently of the DC-OSPF process. If such a restart does not affect the forwarding table, then DC-OSPF should continue to advertise routes that it has learnt from the Routing Table Manager. This is achieved by setting ospfPmEntRtmPurgeTime to a value that gives the Routing Table Manager sufficient time to restart. A value of zero indicates that routes will be purged as soon as the join to RTM fails. Any change to the configured timer value will take effect when the timer is next started. RTM purge timers that are already running will not be affected by the change.