Subnetting and supernetting in tcp ip pdf
File Name: subnetting and supernetting in tcp ip .zip
Covers procedures involved in subnetting Class A, B, and C networks, as well as those involved in supernetting Class C networks. In the past few years, as the number of hosts connected to the Internet has grown beyond expectations, it has become apparent that the present IP addressing scheme imposes limitations on network size. This has led to two concepts for IP network administrators: subnetting and supernetting.
When a large network is subnetted, the network is divided into at least two smaller subnetworks, with each subnetwork subnet having its own subnetwork address subnetid. When supernetting is performed, several small Class C networks are combined to create one large network, or supernetwork. Subnetting Each IP address is 32 bits long. A portion of each IP address represents the network netid , and a portion represents the host hostid. This means that IP addressing imposes its own hierarchy to follow for reaching any host on an internetwork.
The network is first reached using the netid, and then the specific host is reached using the hostid. This addressing scheme approaches all networks as if they are just one large network with several hosts.
If this addressing were the only one allowed, there would be two serious limitations on network design: Hosts on the network could not be organized into groups.
With this scheme, you could not create separate networks for departments within an organization. All networks would be at the same level. If all hosts were connected to the same physical network, bandwidth would be quickly consumed during peak usage hours. All users would be sending and receiving over the same cable. The effect of having all hosts connected to the same physical network is shown in Figure A.
Figure A In this example, all our hosts are connected to the same physical network. Figure B Now the Marketing and Finance departments each have their own subnets: Class B network without subnetting Netid Hostid Class B network with subnetting Netid Subnetid Hostid Class A network with original subnet masking Netid Hostid Class A network with new subnet masking Netid Subnetid Hostid Class B network with original subnet mask Netid Hostid Class B network with new subnet mask Netid Subnetid Hostid First subnet Subnet address First address Last address Broadcast Class C network with original subnet mask Netid Hostid Class C network with new subnet mask Netid Subnetid Hostid Figure C The original class network is subnetted into six smaller subnetworks.
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Now the Marketing and Finance departments each have their own subnets:
IPv4 - Subnetting
classification, subnetting and super netting and also explain the method of all computers on the Internet, use the TCP/IP protocol as gmworldwide.org .
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Orders delivered to U. Learn more. An addressing scheme is clearly a requirement for communications in a computer network. With an addressing scheme, packets are forwarded from one location to another.
LECTIONS & TESTS
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Subnet Address & Mask. →Host IP address: →Class B - network mask: →Subnet Mask. ⇨ Longer than natural class mask; Length.