5.2 FORWARDING WALK-THROUGH

There is no separate specification of the forwarding function in IP. Instead, forwarding is covered by the protocol specifications for the internet layer protocols ([INTERNET:1], [INTERNET:2], [INTERNET:3], [INTERNET:8], and [ROUTE:11]).

• 5.2.1 Forwarding Algorithm
  • 5.2.1.1 General
  • 5.2.1.2 Unicast
  • 5.2.1.3 Multicast
• 5.2.2 IP Header Validation
• 5.2.3 Local Delivery Decision
• 5.2.4 Determining the Next Hop Address
  • 5.2.4.1 IP Destination Address
  • 5.2.4.2 Local/Remote Decision
  • 5.2.4.3 Next Hop Address
  • 5.2.4.4 Administrative Preference
  • 5.2.4.5 Load Splitting
• 5.2.5 Unused IP Header Bits: RFC-791 Section 3.1
• 5.2.6 Fragmentation and Reassembly: RFC-791 Section 3.2
• 5.2.7 Internet Control Message Protocol - ICMP
  • 5.2.7.1 Destination Unreachable
  • 5.2.7.2 Redirect
  • 5.2.7.3 Time Exceeded
• 5.2.8 INTERNET GROUP MANAGEMENT PROTOCOL - IGMP