Routing Methods in Telecommunications: Complex Project Task Part ipv4 Network Addressing Map

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Routing Methods in Telecommunications: Complex Project Task

Part 1. IPv4 Network Addressing Map

Table 1

0	0	1	2	255	128	0			168	255
1
2

10
								Class B



					172		16-	-31
			Class A



					191
					192				168


								Class C


					223
					224
								Class D Multicast
								Class D Multicast
					239
					240
								Class E Reserved
								Class E Reserved
127					255

IP-Classes (mega networks):

A: 0…..…….……….. 2⁷-2networks x 2²⁴ addresses

B: 10.........................… 2⁶⁺⁸networks x 2¹⁶ addresses

C: 110..……………… 2⁵⁺¹⁶networks x 2⁸ addresses

D: 1110……………… 2²⁸ addresses

E: 1111....…………… 2²⁸-1 addresses

Internal (non public) networks:

A: 10.0.0.0/8

B: 172.16-31.0.0/16

C: 192.168.0-255.0/24

Loop Back network: 127.0.0.0/8

CIDR (Classless Inter-Domain Routing) since 1993 valid

Class-aware IPv4 Address Mapping

0 10 126 127 128 172 191 192 223 224 239 240 255

Multicast

Reserved
Part 2. IPv4 Class-aware routing

Table 2 -Test Questions

Nr.	Class-aware Addressing Case	Solution	Mark
1	How many different networks of class “A” exist ?
2	How many different networks of class “B” exist ?
3	How many different networks of class “C” exist ?
4	How many IPv4 addresses in a class “A” network exist ?
5	How many IPv4 addresses in a class “B” network exist ?
6	How many IPv4 addresses in a class “C” network exist ?
7	How many different public networks of class “A” exist ?
8	How many different public networks of class “B” exist ?
9	How many different public networks of class “C” exist ?
10	How many different private networks of class “A” exist ?
11	How many different private networks of class “B” exist ?
12	How many different private networks of class “C” exist ?
13	How many interfaces may have the network 172.16.0.0/16 ?
14	To what network belongs the address 192.168.25.30 ?
15	What is the broadcast address for the host 172.30.1.1 ?
16	Create a multicast address
17	To what class belongs the address 255.255.255.1 ?
18	What means the address 127.1.1.1 ?
19	What is the loopback network address ?
20	How many different loopback addresses exist ?
21	What network includes two interfaces: 170.20.30.40 and 170.20.40.50 ?
22	What network includes the following interfaces: 200.30.40.50 and 200.30.40.60 ?
23	How many interfaces may have the network 192.168.1.0 ?
24	How many interfaces may have the network, that includes the network interface 172.21.1.1 ?
25	How many interfaces may have the network that includes the network interface 10.192.168.25 ?
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Part 3. IPv4–Classless Interdomain Routing (CIDR – IETF 1993)

3.1 Host IPv4 routing table

Get access to your PC routing table. Be sure you do understand all the records in the table.

Be ready to comment the routing table records

Table 3

Table 4

Start – Run – cmd – OK route print

Route interfaces

0×1 ……………………………………. MS TCP Loopback interface

0×2 … 20 cf 30 b3 af a2 ……………… Realtec PCIe FE Family Controller

Active routes:

Network address Network mask Gateway address Interface Metrics

0.0.0.0 0.0.0.0 192.168.13.1 192.168.13.11 20

127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1

192.168.13.0 255.255.255.240 192.168.13.11 192.168.13.11 20

192.168.13.11 255.255.255.255 127.0.0.1 127.0.0.1 20

192.168.13.255 255.255.255.255 192.168.13.11 192.168.13.11 20

224.0.0.0 240.0.0.0 192.168.13.11 192.168.13.11 20

255.255.255.255 255.255.255.255 192.168.13.11 192.168.13.11 1

Default gateway 192.168.13.1

Permanent routes:

Absent

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