Chapter 30. Ospf; Ospfv2 Overview - Lenovo CN4093 Application Manual

Chapter 30. OSPF

OSPFv2 Overview

© Copyright Lenovo 2015
Lenovo N/OS supports the Open Shortest Path First (OSPF) routing protocol. The
Lenovo N/OS implementation conforms to the OSPF version 2 specifications
detailed in Internet RFC 1583, and OSPF version 3 specifications in RFC 5340. The
following sections discuss OSPF support for the CN4093 10Gb Converged Scalable
Switch (CN4093):
 "OSPFv2 Overview" on page
concepts, such as types of OSPF areas, types of routing devices, neighbors,
adjacencies, link state database, authentication, and internal versus external
routing.
 "OSPFv2 Implementation in Lenovo N/OS" on page
how OSPFv2 is implemented in Lenovo N/OS, such as configuration
parameters, electing the designated router, summarizing routes, defining route
maps and so forth.
"OSPFv2 Configuration Examples" on page

step-by-step instructions on configuring different OSPFv2 examples:
Creating a simple OSPF domain

Creating virtual links

Summarizing routes

 "OSPFv3 Implementation in Lenovo N/OS" on page
differences and additional features found in OSPFv3.
OSPF is designed for routing traffic within a single IP domain called an
Autonomous System (AS). The AS can be divided into smaller logical units known
as areas.
All routing devices maintain link information in their own Link State Database
(LSDB). The LSDB for all routing devices within an area is identical but is not
exchanged between different areas. Only routing updates are exchanged between
areas, thereby significantly reducing the overhead for maintaining routing
information on a large, dynamic network.
447. This section provides information on OSPFv2
463. This section provides
452. This section describes
471. This section describes
447