Network Abstract

ISO-OSI Model

Physical layer, data link layer, network layer, transport layer, session layer, presentation layer and application layer

TCP-IP Architecture

link layer, internet layer, transport layer, application layer

Ethernet

topology: bus or star.

CSMA/CD

listen before sending, listen while sending, stop when afflict, delay then resend.

Wireless Network

802.11

AP IBSS

CSMA/CA

CA aka conflict avoid.

RTS CTS

IP Protocol

IPv4 IPv6

ICMP

Broadcast address: 255.255.255.255

ARP Protocol

Router

Table-drive IP selection.

Route select algorithm

Route aggregation, longest match principle

Special route item