Netgear Switch M4100 User Manual download pdf (Page 116)

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116 | Chapter 7. OSPF

ProSafe M4100 and M7100 Managed Switches

A screen similar to the following displays.

b. In the Area ID field, enter 0.0.0.1.

c. Click Add to save the settings.

8. Redistribute the RIP routes into the OSPF area.

a. Select Routing > OSPF >

Advanced > Route Redistribution.

A screen similar to the following displays.

b. Under Route Redistribution, in the Available Source list, select RIP.

c. Click Add to add a route redistribution.

VLAN Routing OSPF

For larger networks Open Shortest Path First (OSPF) is generally used in preference to RIP.

OSPF offers the following benefits to the administrator of a large and/or complex network:

• Less network traffic:

- Routing table updates are sent only when a change has occurred

- Only the part of the table that has changed is sent

- Updates are sent to a multicast, not a broadcast, address

• Hierarchical management, allowing the network to be subdivided

The top level of the hierarchy of an OSPF network is known as an autonomous system (AS)

or routing domain, and is a collection of networks with a common administration and routing

strategy

. The AS is divided into areas: intra-area routing is used when a source and

destination address are in the same area, and inter-area routing across an OSPF backbone

is used when they are not. An inter-area router communicates with border routers in each of

the areas to which it provides connectivity.

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Netgear Switch M4100 User Manual Page 116

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