
114065 Rev. A 5-1
Chapter 5
Customizing OSPF Services
OSPF (Open Shortest Path First) is an internal gateway protocol for use in large
networks. This chapter consists of the following sections that describe OSPF and
show you how to edit OSPF parameters.
• OSPF Concepts and Terminology -- page 5-3
OSPF Addresses and Variable-Length Masks -- page 5-3
OSPF Neighbors -- page 5-3
Neighbor Adjacencies -- page 5-4
Designated Routers -- page 5-4
OSPF Areas -- page 5-5
Boundary Routers and AS External Routes -- page 5-6
• Configuring OSPF Global Features -- page 5-9
Enabling and Disabling OSPF on the Router -- page 5-9
Supplying an OSPF ID -- page 5-9
Configuring the Soloist and Backup Soloist on a Slot -- page 5-10
Using the Holddown Timer to Relieve the CPU -- page 5-11
Configuring Message Logging -- page 5-11
Configuring OSPF for Equal-Cost Multipath Routing -- page 5-13
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