vrIpOspfExtLsdbLimit 1.3.6.1.4.1.562.2.4.1.100.6.7.100.1.5

The maximum number of external link-state entries that can be stored in the link-state database. If the value is -1, then there is no limit, that is the maximum number of external OSPF routes that this autonomous system border router will originate. It will begin to flush LSA(Link State Advertisement)s, if an ASBR might receive bursts of external routes (for example, a regional network), then the parameter should be configured to a reasonable level. If there are less than two thousand routes and large bursts are unlikely, then the default should be adequate. This parameter will not affect the number of external OSPF routes a router will store in it's database.