# Tcp/Ip Lan Plan

Submitted By JPRenolds
Words 315
Pages 2
TCP/IP LAN Plan CheckPoint
An IPv6 address is 128 bits compared to the IPv4, which is only 32 bits.

The subnet mask of an IP address, defines the network portions and which part is the host portion.

Each of the three class IP addresses have a range, which cannot be routed across the internet. Since the IP address 172.19.243.254 falls in the range of the class B 172.16 to 172.31 ranges it cannot be routed across the internet.

Computers to communicate on a TCP/IP logical network they must have an IP address. An IP address is unique to the devices on a network providing the network ID and the host ID there for, for a computer to talk to another computer within a logical network they both must have an network ID and a host ID.

Reallocating bits from the host ID to a network ID one must remember subnets take the power of 2, meaning to create 16 subnets one must reallocate 4 bits to the 2 power (2x2=4x2=8x2=16).

A class C network address is 255.255.255.0, leaving the last octet for identification of subnets. 32 subnets equals 6 bits, converted to binary provides a 11111100 binary bit pattern with the sixth 1 representing the 32nds place. The binary bit pattern 11111100 is equal to (128+64+32+16+8+4) 252, which is a subnet mask of 255.255.255.252.

To assign address to 62 hosts one must use the formula 2n-2 with n representing the number of host bits. 62 host is (2*2=4*2=8*2=16*2=32*2=64-2=62) 6 host bits.

Why subnet, the ability to break up large networks in to smaller networks, free up available IP addresses, create logical works groups, increase efficiency, reduction broadcast traffic increases...

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