Intra-Area Ospf; Inter-Area Ospf - Bay Networks Nautica 200 Reference Manual

NauticaRS Release 4.1 Reference Guide

Intra-Area OSPF

Inter-Area OSPF

8-28
Figure 8-6 shows how OSPF operates. An area can consist of
Broadcast networks, non-broadcast networks, stub networks and
hosts. Exactly how Areas are defined is up to the System
Administrator.
The central area is known as the Backbone and is the area through
which other areas route data. The backbone is always defined as
Area 0. The routers that link the areas together are known as Area
Border Routers (ABR). An ABR is a router that can see at least 2
other areas (One of these must be the Backbone). In
all three Routers (A, B and C) are ABRs.
For advanced configuration of OSPF the
should be set to
YES
Advanced-Manager, refer to page 5-15.
Intra-Area OSPF allows OSPF to run within a single area. By
enabling OSPF and disabling RIP, the router is configured to the
default settings which are suitable for standard Intra-Area OSPF
operation. The configuration can be optimized by enabling
Advanced-Manager
parameters now available on the relevant PAth.
The default area for Intra-Area networking is 0.
Seepage 5-15 for more details on
Warning: While the Nautica Series supports the concurrent
operation of RIP and OSPF, it does not support the exchange of
routing information between the two protocols.
Inter-Area OSPF allows different areas within a large corporate
autonomous system to communicate with each other. It also
allows more efficient distribution of routing information (Routing
Tables etc.) between networks.
in . For more information on the
system#
( ) and adjusting the OSPF
system#
Advanced-Manager
Figure
Advanced-Manager
options.
117237-C Rev. A
8-6,