Avocent Cyclades-PR1000

Cyclades-PR1000

Chapter 9 - Routing Protocols 72

OSPF Global Configurations

STEP THREE

After completing the OSPF interface configuration for all interfaces (even those that will not use OSPF), navigate

to the OSPF Menu, CONFIG=>IP=>OSPF. Enter into the OSPF Global Commands menu and set the parameters

as indicated in the table below.

OSPF Global Commands Menu CONFIG =>IP =>OSPF =>GLOBAL

Parameter Description

OSPF Protocol Enables OSPF on all interfaces.

Router ID Assigns a unique ID to the router for use by the OSPF protocol. It must be one of the

router's IP addresses.

AS Boundary Router An Autonomous System Boundary Router (ASBR) ca n convert external routes into

OSPF routes. Which external r outes is determined through the following parameters.

In the figure, only Router 5 is an ASBR.

The following parameters apply only to

Autonomous System Boundary Ro uters

Originate Default

Gateway

Router will advertise itself as the Default Gateway (DG).

Default Gateway

External Metric Applies when

Originate Default Gateway Adve rtisement

is set to

Yes

. Defines the

metric that will be advertised by OSPF.

Default Gateway

External Metric-Type Applies when

Originate Default Gateway Adve rtisement

is set to Yes. For

Type 1

, the

total metric of this route is composed of th e internal metric (inside the autonom ous

system) and the external metri c (provided in the previous p arameter). For

Type 2

, the

total metric of this route is the v alue provided in the previous parameter.

Advertise RIP Routes Routes learned through the RIP protocol will be converted to OSPF as external routes.

RIP External Metric Applies when

Advertise RIP routes

is set to

Yes

. Defines the metric that will be

advertised by OSPF.

this table continued