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2.5. Default Configuration Connected: An Internet Encyclopedia
2.5. Default Configuration

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2.5. Default Configuration

2.5. Default Configuration

OSPF is a powerful routing protocol, equipped with features to handle virtually any configuration requirement that might reasonably be found within an Autonomous System. With this power comes a fair degree of complexity, which the sheer number of objects in the MIB will attest to. Care has therefore been taken, in constructing this MIB, to define default values for virtually every object, to minimize the amount of parameterization required in the typical case. That default configuration is as follows:

Given the following assumptions:

  • IP has already been configured

  • The ifTable has already been configured

  • ifSpeed is estimated by the interface drivers

  • The OSPF Process automatically discovers all IP Interfaces and creates corresponding OSPF Interfaces

  • The TOS 0 metrics are autonomously derived from ifSpeed

  • The OSPF Process automatically creates the Areas required for the Interfaces

The simplest configuration of an OSPF process requires that:

  • The OSPF Process be Enabled.

This can be accomplished with a single SET:

                  ospfAdminStat := enabled.

The configured system will have the following attributes:

  • The RouterID will be one of the IP addresses of the device

  • The device will be neither an Area Border Router nor an Autonomous System Border Router.

  • Every IP Interface, with or without an address, will be an OSPF Interface.

  • The AreaID of each interface will be 0.0.0.0, the Backbone.

  • Authentication will be disabled

  • All Broadcast and Point to Point interfaces will be operational. NBMA Interfaces require the configuration of at least one neighbor.

  • Timers on all direct interfaces will be:

      Hello Interval:        10 seconds
      Dead Timeout:          40 Seconds
      Retransmission:         5 Seconds
      Transit Delay:          1 Second
      Poll Interval:        120 Seconds
    

  • no direct links to hosts will be configured.

  • no addresses will be summarized

  • Metrics, being a measure of bit duration, are unambiguous and intelligent.

  • No Virtual Links will be configured.


Next: 3. Definitions

Connected: An Internet Encyclopedia
2.5. Default Configuration

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