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You can configure a redistribute entry for OSPF to announce routes of a certain source type, for example, static, RIP, or direct. If a route policy field is not configured for a redistribute entry, then the default action is taken on the basis of metric, metric-type, and subnet configured. This is called basic redistribution. Otherwise, you use the route policy specified to perform detailed redistribution. If no redistribution entry is configured, no external LSA is generated for non-OSPF routes.
You can also configure OSPF redistribute policies in the OSPF redistribute tab of the Policy dialog box. See Configuring an OSPF redistribute policy.
Note:
Changing OSPF Redistribute contexts is a process-oriented operation that can affect system performance and network reachability while performing the procedures. Therefore, Nortel Networks recommends that if you want to change default preferences for an OSPF Redistribute context, you should do so before enabling the protocols.
To set up or edit an OSPF redistribute policy:
| The OSPF dialog box opens with the General tab displayed. |
| The Redistribute tab opens. |
| The Policy, Insert OSPF Redistribute dialog box opens. |
Policy, Insert OSPF Redistribute dialog box fields
RouteSource
Select the route source protocol for the redistribution entry.
Enable
Enables (or disables) an OSPF redistribute entry for a specified source type.
You can also enable or disable this feature in the OSPF Redistribute tab of the Policy dialog box by clicking in the field and selecting enable or disable from the pulldown menu.
Metric
Set the OSPF route redistribution metric for basic redistribution. The value can be a range between 0 to 65535. If configured as 0, the original cost of the route is used.
MetricType
Set the OSPF route redistribution metric type. The default is Type 2.
You can also select your entry in the OSPF Redistribution tab of the Policy dialog box by clicking in the field and selecting any, type1, or type2 from the pulldown menu.
Subnets
Allows or suppresses external subnet routes while being redistributed into an OSPF domain.
You can also select your entry in the OSPF Distribution tab of the Policy dialog box by clicking in the field and selecting allow or deny from the pulldown menu.
RoutePolicy
Sets the route policy by name to be used for the detailed redistribution of external routes from a specified source into an OSPF domain.
Click the ellipse button and choose from the list in the Route Policy dialog box. To deselect an entry, use the ALT key.
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