Class A/B/C Networks

[InlineFour]

When would you need to use a class A/B network when class C already handles 254 hosts?

besides needing more than 254 hosts, what other reason is there to use a class A/B network?

 

[cross6]

if you need more networks.

For example, you might subnet out an range to give you a TON of networks, but only two hosts per network. You'd use this if you had a ton of point to point links. The router on either side would get one of the two host ip's for the subnet. This helps you save alot of address space.

 

[Goosemaster]

For organization it helps to an extent. For the msot part, if you are a growing business with like 50 employees and use a class C range, you are going to have headaches in the future if you are planning a very complex and intense topolofy.

 

[Rilex]

When 192.168 gets boring (I personally use 10.x.x.x even though I have less than 15 IP-enabled devices).

 

[Tazanator]

okay .. a good example would be in the following configuration ...

you have
Pay roll/human resources
Engineers
Production
Sales
Management

say 1 payroll clerk 3 engineers 6 production techs 8 sales and 3 managers

You want HR to have it's own server and engineers would need to keep new designs secure so they get a server, management always claims they have to have privacy and sales can never know what engineers may be working on (prevents them from spilling new ideas or selling something thats not ready for market)
in this company at that small stage putting each department on it's own subnet will allow room for growth and security to each unit.

 

[RebateMonger]

The Class is really immaterial. For a private network, pick an IP address range that appeals to you, and then choose an appropriate subnet mask that gives you the number of addresses you will conceivably need in that subnet.

 

[nweaver]

my test lab has 500+ PC's, so if I want them all in one subnet (broadcast domain).


I normally run them on 3 class c's (as all our live IP's are class C's, we own about 20 ranges)

 

[her209]

Originally posted by: RebateMonger
The Class is really immaterial. For a private network, pick an IP address range that appeals to you, and then choose an appropriate subnet mask that gives you the number of addresses you will conceivably need in that subnet.

123.45.67.89