1 configuring ospf global parameters, Configuring ospf global parameters -10 – Riverstone Networks WICT1-12 User Manual

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14-10 Riverstone Networks RS Switch Router User Guide Release 8.0

Configuring OSPF Parameters

OSPF Configuration Guide

14.9.1

Configuring OSPF Global Parameters

The following sections describe parameters that can be set only at the global level.

Configuring the Routing Table Recalculation

The default interval between the recalculation of the routing table is 5 seconds. You can change this interval, if
necessary. Increasing the interval allows more time wherein routing changes can occur. Or, you can set it to 0, for the
recalculation to occur immediately, one after the other.

To configure the interval between routing table recalculations, enter the following command in Configure mode:

Configuring Autonomous System External (ASE) Link Advertisements

Because of the nature of OSPF, the rate at which ASEs are flooded may need to be limited. The following parameters
can be used to adjust those rate limits. These parameters specify the defaults used when importing OSPF ASE routes
into the routing table and exporting routes from the routing table into OSPF ASEs.

To specify AS external link advertisements parameters, enter the following commands in Configure mode:

router-dead interval

The interval the router waits after receiving
no Hello packets from its neighbor before
considering it as down.

transit delay

The estimated time it takes to transmit an
LSA update.

Set the interval between routing
table recalculations.

ospf set spf-holdtime

<number>

Specifies how often a batch of ASE
link state advertisements will be
generated and flooded into OSPF.
The default is 1 time per second.

ospf set export-interval

<num>

Parameter

Description

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