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3 configuring global settings for ospf – Planet Technology WGS3-2620 User Manual

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WGS3 Layer 3 Switch User’s Manual

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Default Route

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Enables or disables advertising this switch as a default router.

Static Route

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Enables or disables advertisement of static routes.

5.7.5.2.3 Configuring Global Settings for OSPF

To implement OSPF for a large network, you must first organize the network into logical areas to limit the

number of OSPF routers that actively exchange Link State Advertisements (LSAs). You can then define

an OSPF interface by assigning an IP interface configured on this switch to one of these groups. This

OSPF interface will send and receive OSPF traffic to neighboring OSPF routers. You can further

optimize the exchange of OSPF traffic by specifying an area range that covers a large number of

subnetwork addresses. This is an important technique for limiting the amount of traffic exchanged

between Area Border Routers (ABRs). And finally, you must specify a virtual link to any OSPF area that

is not physically attached to the OSPF backbone. Virtual links can also be used to provide a redundant

link between contiguous areas to prevent areas from being partitioned, or to merge backbone areas.

The OSPF global configuration consist a configuration page and a few sub-menu.


Parameter Default Description

Router ID

Selection

STATIC INTF Defines how the Router ID is determined: There are three options:

STATIC: User can manual configure the Router ID.

STATIC INTF: The VLAN 1 IP address will be used as Router ID

ACTIVE INTF: The first active interface will be used as Router ID

Router ID

VLAN 1 IP

A 32-bit number assigned to each router running the OSPF protocol.

This number uniquely identifies the router within an Autonomous

System.

RFC 1583

Compatibility

Disabled

Enable or disable the compatibility to RFC 1583 OSPF version 2