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Table of contents
Slide 1
Background
Slide 3
Background (Cont.)
Where ICMP is in the Stack
Packet Format
ICMP Packet Format and Fields
Message Types
Message Type List: Only The Most Important
Example: Destination Unreachable
Common Destination Unreachable Codes
Host and Port Unreachable Transactions
ICMP Message Format: Destination Unreachable
ICMP Transaction: Destination Unreachable Host Unreachable
ICMP Transaction: Destination Unreachable Port Unreachable
Example: Router Advertisement
Router Solicitation / Advertisement Transactions
ICMP Message Format: Router Advertisement
ICMP Router Advertisement
Ping
Slide 21
Where Ping is in the Stack
ICMP Packet Format: Echo Request and Echo Response
ICMP Echo Fields
Ping Packets
Example Ping Traces: Yahoo and MIT
References
Author:
Mike Borella