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How many addresses does a Class C network have?
A Class C address consists of a 24-bit network address and an 8-bit local host address. The first three bits in the network address indicate the network class, leaving 21 bits for the actual network address. Therefore, there are 2,097,152 possible network addresses and 256 possible local host addresses.
What is the maximum number of hosts in Class C IP address?
254
Thus, for a Class C address with 8 bits available in the host field, the maximum number of hosts is 254. Today, IP addresses are associated with a subnet mask.
How do I assign IP address to more than 254?
Re: DHCP with more than 254 addresses All you have to do is turn on DHCP for that VLAN holding the 700 computers. If you’re using /24 subnet, then you can only have 253 addresses (one is the MX and the other two unusable by hosts). If your network is flat, then you probably need a /22 which hold 1022 hosts.
What happens if DHCP runs out of addresses?
A router can run out of IP addresses to assign to your devices, although it is very unlikely to happen. If the DHCP server has already allocated all available addresses, the router will refuse to assign an IP address until an existing device releases an IP address or the DHCP lease time expires.
Which class is best for subnetting?
Class A
The Class A subnet mask is 255.0. 0.0. Accordingly, Class A IP addresses are best used to serve incredibly large networks. In comparison to Class A, Class B IP addresses are better suited to serving smaller networks since they reserve 14 bits for a network, which leaves only 18 bits for hosts.
Why are there only 256 Class C networks?
There are two reasons: There’s a limited amount of class C (private) networks. We can choose between 192.168.0.0/24 and 192.168.255.0/24. What if we have more than 256 sites? There’s not enough space so you will have to pick another network range.
Do you need a subnet for every VLAN?
If this is an enterprise network, you probably use private IP addresses on your LAN. Some VLANs only required a subnet for 10 users (20 when taking growth into account) so we could have picked smaller subnets. It is however far more convenient to use the same subnet size everywhere.
How many machines are in a Class C subnet?
“Class C” means a /24 subnet, that means a subnet with 2^ (32-24) = 256 IP addresses in it, one of which (the last one) goes for the broadcast address, and one of which should not be used (the first one, also called network address). If the “machines” you’re talking about are actually network hosts able to connect to each other, they are 254.
What are the VLANs behind R3 and R4?
The VLANs behind R3 will have 40 servers, the smallest subnet we can use is a /26 which allows 62 usable IP addresses. The VLANs behind R4 will have 20 servers, the smallest subnet we can use is a /27 which allows 30 usable IP addresses. In between the routers, we can use /30 since it allows 2 usable IP addresses.