Review of Important Networking Concepts. Introductory material. This module uses the example from the previous module to review important networking concepts: protocol architecture, protocol layers, encapsulation, demultiplexing, network abstractions. Sending a packet from Argon to Neon.
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This module uses the example from the previous module to review important networking concepts: protocol architecture, protocol layers, encapsulation, demultiplexing, network abstractions.
DNS: What is the IP address of “neon.tcpip-lab.edu”?
DNS: The IP address of “neon.tcpip-lab.edu” is 184.108.40.206
ARP: What is the MAC address of 220.127.116.11?
ARP: What is the MAC address of 18.104.22.168?
ARP: The MAC address of 22.214.171.124 is 00:20:af:03:98:28
ARP: The MAC address of 126.96.36.199 is 00:e0:f9:23:a8:20Sending a packet from Argon to Neon
188.8.131.52 is not on my local network.
Therefore, I need to send the packet to my
default gateway with address 184.108.40.206
220.127.116.11 is on my local network.
Therefore, I can send the packet directly.
The TCP/IP protocol architecture is the protocol architecture of the Internet
The TCP/IP suite has four layers: Application, Transport, Network, and Data Link Layer
End systems (hosts) implement all four layers. Gateways (Routers) only have the bottom two layers.TCP/IP Protocol Architecture
The TCP/IP protocol stack does not define the lower layers of a complete protocol stack
1. a remote entity a the same layer using a common protocol
2. adjacent entities at the local system via service interfaces
Frame is an IP datagram
Frame is an IP datagram
IP datagram is a TCP segment for port 80
Send HTTP Request to neon
Establish a connection to 18.104.22.168 at port 80
Open TCP connection to 22.214.171.124 port 80
Send IP datagram to 126.96.36.199
Send a datagram (which contains a connection request) to 188.8.131.52
Send the datagram to 184.108.40.206
Send the datagram to 220.127.116.11
Send Ethernet frame to 00:e0:f9:23:a8:20
Send Ethernet frame to 00:20:af:03:98:28Layers in the Example
00e0 f923 a820 00a0 2471 e444 0800 4500 002c 9d08 4000 8006 8bff 808f 8990808f 4715 065b 0050 0009 465b 0000 0000 6002 2000 598e 0000 0204 05b4
Option: maximum segment size
in this frameEncapsulation and Demultiplexing: Application data