IP datagram format
IP Fragmentation & Reassembly
IP Fragmentation and Reassembly
ICMP: Internet Control Message Protocol
Routing in the Internet
Internet AS Hierarchy
Intra-AS Routing
RIP ( Routing Information Protocol)
RIP (Routing Information Protocol)
RIP: Link Failure and Recovery
RIP Table processing
RIP Table example (continued)
OSPF (Open Shortest Path First)
OSPF “advanced” features (not in RIP)
Hierarchical OSPF
IGRP (Interior Gateway Routing Protocol)
Inter-AS routing
Internet inter-AS routing: BGP
Why different Intra- and Inter-AS routing ?
Router Architecture Overview
Input Port Functions
Input Port Queuing
Three types of switching fabrics
Switching Via Memory
Switching Via Bus
Switching Via An Interconnection Network
Output Ports
Output port queueing
IPv6
IPv6 Header (Cont)
Other Changes from IPv4
Transition From IPv4 To IPv6
Dual Stack Approach
Tunneling
Email: shankar@cs.umd.edu