Vlan Routing Ospf - NETGEAR GSM7228PS Software Administration Manual

ProSafe 7000 Managed Switch Release 8.0.3
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.
The 7000 Series Managed Switch operating as a router and running OSPF will determine the
best route using the assigned cost and the type of the OSPF route. The order for choosing a
route if more than one type of route exists is as follows:
- Intra-area
- Inter-area
- External type 1: the route is external to the AS
- External Type 2: the route was learned from other protocols such as RIP
Chapter 7. OSPF | 93