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Catalyst 3560 Switch Software Configuration Guide
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Chapter 30 Configuring IP Unicast Routing
Configuring OSPF
OSPF typically requires coordination among many internal routers, area border routers (ABRs)
connected to multiple areas, and autonomous system boundary routers (ASBRs). The minimum
configuration would use all default parameter values, no authentication, and interfaces assigned to areas.
If you customize your environment, you must ensure coordinated configuration of all routers.
This section briefly describes how to configure OSPF. It includes this information:
• Default OSPF Configuration, page 30-29
• Configuring Basic OSPF Parameters, page 30-30
• Configuring OSPF Interfaces, page 30-31
• Configuring OSPF Area Parameters, page 30-32
• Configuring Other OSPF Parameters, page 30-33
• Changing LSA Group Pacing, page 30-35
• Configuring a Loopback Interface, page 30-35
• Monitoring OSPF, page 30-36
Note To enable OSPF, the switch must be running the EMI.
Default OSPF Configuration
Table 30-6 shows the default OSPF configuration.
Table 30-6 Default OSPF Configuration
Feature Default Setting
Interface parameters Cost: No default cost predefined.
Retransmit interval: 5 seconds.
Transmit delay: 1 second.
Priority: 1.
Hello interval: 10 seconds.
Dead interval: 4 times the hello interval.
No authentication.
No password specified.
MD5 authentication disabled.
Area Authentication type: 0 (no authentication).
Default cost: 1.
Range: Disabled.
Stub: No stub area defined.
NSSA: No NSSA area defined.
Auto cost 100 Mbps.
Default-information originate Disabled. When enabled, the default metric setting is 10, and the
external route type default is Type 2.
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