Troubleshooting Dialon Demand Routing Issues in OSPF

This section discusses the issues related to DDR. When OSPF is configured over a DDR link, be sure to suppress OSPF Hellos because OSPF sends Hellos over point-to-point links every 10 seconds.

The most common issues related to OSPF over DDR links are as follows:

• Problem: OSPF Hellos are bringing up the link

• Problem: OSPF Hellos are not getting across the link*

• Problem: Demand circuit keeps bringing up the link NOTE

*The problem of OSPF Hellos not getting across the link was addressed earlier in the section Troubleshooting OSPF Neighbor Relationships." Refer to this section for the solution to this problem.

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