1. Chap 10 IP Addressing Andres, Wen-Yuan Liao
Department of Computer Science and Engineering
De Lin Institute of Technology

3. Overview
The details of IP address classes, network and node addresses, and subnet masking
The concepts you need to understand before configuring an IP address

4. Subnetting The purpose of IP address
The role of host network on a routed network
The role of broadcast addresses on a routed network
The assignment of router interface and network IP addresses

5. IP address 32-bit dotted-decimal format
Router interfaces must be configured with an IP address

6. The role of host network
A host address
all 1s: IP broadcast
all 0s: "this network" or "the wire itself"
The routing table contains entries for network or wire addresses

9. Broadcast Addresses
The messages are intended to be seen by every host on a network
Directed broadcasts
Be directed into a specific network/subnet
All 1s in the host portion of the address
Flooded broadcasts ( )
Local broadcasts

10. Router Commands ip addresses command ip host command
ip name-server command
Enable and disable DNS on a router
Show hosts command

11. ip addresses command
Establish the logical network address of an interface
term ip netmask-format: specify the format of network masks
bit count
dotted-decimal (default)
Hexadecimal

13. ip host command
Make a static name-to-address entry in the router's configuration file

16. ip name-server Defines which hosts can provide the name service
Maximum of six IP addresses

19. Show hosts command
Display a cached list of host names and addresses

22. Verifying Address Configuration
Verification commands
The telnet and ping commands
The trace command

27. trace command trace is supported by IP, CLNS, VINES, and AppleTalk
!H -- Not forwarded by the router, usually due to an access list
P -- The protocol was unreachable
N -- The network was unreachable
U -- The port was unreachable
* -- Time out

29. Summary 32-bit logical address: IP address Broadcast messages
ip address / ip host / ip name-server / show hosts
telnet, ping, and trace