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An excerpt from a university course on IP Routing Protocols and Internetwork Design, focusing on the concepts of delivery, forwarding, and routing. It covers topics such as direct and indirect delivery, forwarding techniques, route method versus next-hop method, host-specific versus network-specific method, default method, simplified forwarding module in classless addressing, address aggregation, longest mask matching, and unicast routing protocols. The document also introduces autonomous systems and popular routing protocols.
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(Assistant Professor)
ETN 770: IP Routing Protocols andInternetwork Design 1
DELIVERY
The network layer supervises the handling of the
packets by the underlying physical networks. We
define this handling as the delivery of a packet.
Direct Versus Indirect Delivery
Topics discussed in this section:
ETN 770: IP Routing Protocols
ETN 770: IP Routing Protocols 4
FORWARDING
Forwarding means to place the packet in its route to
its destination. Forwarding requires a host or a router
to have a routing table. When a host has a packet to
send or when a router has received a packet to be
forwarded, it looks at this table to find the route to the
final destination.
Forwarding Techniques
Forwarding Process
Routing Table
Topics discussed in this section:
ETN 770: IP Routing Protocols 5
Route method versus next-hop method
ETN 770: IP Routing Protocols 7
Default method
ETN 770: IP Routing Protocols 8
Simplified forwarding module in classless
address
ETN 770: IP Routing Protocols 10
Address aggregation
ETN 770: IP Routing Protocols 11
Longest mask matching
ETN 770: IP Routing Protocols 13
Autonomous systems
ETN 770: IP Routing Protocols 14
Popular routing protocols
ETN 770: IP Routing Protocols 16
Initialization of tables in distance vector routing
ETN 770: IP Routing Protocols 17
Updating in distance vector routing
ETN 770: IP Routing Protocols 19
Three-node instability
ETN 770: IP Routing Protocols 20
Three-node instability