10-10
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
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Chapter 10 Configuring Networking Protocols
Configuring IP Routing
• Stub areas—Definition of stub areas is supported.
• Route redistribution—Routes learned through any IP routing protocol can be redistributed into
another IP routing protocol. At the intradomain level, this means that OSPF can import and export
routes learned through protocols such as EIGRP and RIP.
• Authentication—Plain text and message-digest key (MD5) authentication among neighboring
routers within an area are supported.
• Routing interface parameter—Configurable parameters supported include interface output cost,
retransmission interval, interface transmit delay, router priority, router dead and hello intervals, and
authentication key.
• Virtual links—Virtual links are supported.
• Not-so-stubby-area (NSSA)—RFC 1587.
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.
Table 10-2 shows the default OSPF configuration.
Table 10-2 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.
Default metric Built-in, automatic metric translation, as appropriate for each
routing protocol.
Distance OSPF dist1 (all routes within an area): 110.
dist2 (all routes from one area to another): 110.
and dist3 (routes from other routing domains): 110.
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