Avocent Cyclades-PR2000 OSPF Configuration on the Interface, Parameter, Description

Cyclades-PR2000

First, some definitions:

•An Autonomous System (AS) is a portion of the network that will use a single routing strategy. It is made up of a backbone area and optionally of non-backbone areas.

•OSPF Areas are sub-systems that have identical routing databases. An area generally has no knowledge of the routing databases of other areas.

•The Backbone connects areas and contains any routers not contained in another area.

•An Area Border Router connects areas and contains a separate database for each area it is contained in.

•An Autonomous System Boundary Router (ASBR) connects Autonomous Systems. The other Autonomous System does not necessarily need to use OSPF.

STEP ONE

If using OSPF for the first time, sketch the network and determine which routers will make up the backbone and each area. Determine if each router is an area border router or an autonomous system boundary router.

OSPF Configuration on the Interface

STEP TWO

Contrary to most other protocols in CyROS, OSPF must first be configured on each interface, then configured in the CONFIG =>IP =>OSPF menu. Enter into each interface and set the parameters listed in the table.

OSPF Menu CONFIG =>INTERFACE =><LINK> =>ROUTING PROTOCOL =>OSPF

Parameter	Description
OSPF on This	Activates OSPF. Enable Inactive is used to temporarily disable the OSPF protocol
Interface	without erasing the parameters set below. This is useful when OSPF is first configured,
	as the general parameters must be set afterwards in CONFIG=>IP =>OSPF and OSPF
	cannot function without them.

Parameters that apply only when OSPF on This Interface is Disabled.

Advertise This Non- Causes the router to include this interface in its advertisements through other interfaces
OSPF Interface	(as an external route).

This table is continued.

Chapter 9 - Routing Protocols 70