Enterasys N Standalone (NSA) Series Configuration Manual page 1099

Command Defaults
If route type is not specified, the distance value will be applied to all OSPF routes.
Example
This example shows how to change the default administrative distance for external OSPF routes to
100:
Matrix>Router1(config)#router ospf 1
Matrix>Router1(config-router)#distance ospf external 100
Routing Protocol Configuration Command Set
Matrix NSA Series Configuration Guide
Configuring OSPF
13-47