FAQ-Why Does the Nexthop of a Direct Route Redistributed Not Change After the OSPF Cost Value of the OSPF Interconnection Interface Changes

Publication Date:  2012-07-27 Views:  175 Downloads:  0
Issue Description
Q:
Why does the nexthop of a direct route redistributed not change after the OSPF cost value of the OSPF interconnection interface changes? 
 
Alarm Information
Null
Handling Process
A:
The direct routes redistributed by OSPF fall into two types: TYPE 1 and TYPE 2. By default, redistributed direct routes are of TYPE 2. For TYPE 2 external routes, internal cost values are not calculated. Therefore, even if the cost value of the interconnected interface changes, the change does not affect TYPE 2 direct routes. After the redistributed direct routes are changed to TYPE 1and the interface cost is changed, the redistributed routes and nexthop take effect immediately. 
 
Root Cause
Null
Suggestions
Null

END