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In either IPv4 or IPv6, a network address is the first address in the network IP range. It has all zeroes in the host field, when written in binary. It cannot be assigned to a host device. It appears in a router's routing table to identify the network. For example:
O 148.43.200.80/28 [110/586] via 148.43.200.30, 00:03:07, Serial0/0/0
This shows that network 148.43.200.80 is reachable out interface s0/0/0. It is a /28 network, meaning 16 total IPv4 addresses. 148.43.200.80 is the first one, "the network address," and as said before, can't be assigned to a host device. This network would extend to 148.43.200 95, which would be the broadcast address for the network (all 1s in the binary host field), and also can't be assigned to a host.
All the addresses in the network share the network prefix. It is simply the network portion of the address, in binary. Since these are /28 addresses, the network prefix is 28 bits long...the first 28 bits of the 32 bit address. For these addresses in the example network, the network prefix is (in bold):
10010100.00101011.10001000.01010000. The remaining four bita at the end are the host bits, or host field, or host number (all the same thing).
People will write this network prefix like so: 148.43.200.80 /28. Now 148.43.200.80 is the network address, so it's easy to see where the confusion comes from. You pretty much have to understand from context whether they're talking about the network prefix or the network address.
Some people will refer to the CIDR prefix...the /28...just as the prefix, or even the network prefix, but it really is just a way to represent the subnet masking. It says that the first 28 bits of the address in question are the network bits, and will be identical for any IP in this network.
What else can I help you with?
What is the difference between a Network address and Broadcast address?
When you set up a sub network you decide upon the subnet mask and this determines the network address (all zeros in the subnet portion of the address) and the broadcast address (all ones in the subnet portion of the address). When you assign the host addresses in your subnet, then you use the addresses between the network address and the broadcast address.
What is the difference between your IPv4 address and your IP address?
IP is the internet protocol that uniquely identifies a system on a network and there is no difference between IP and IPv4 infact IPv4 is a version of like IPv6.
What is the difference between a permanent address and a care of address?
A permanent address for a mobile node is it's IP address when it is at it's home network. A care-of-address is the one its gets when it is visiting a foreign network.
Is there a difference between a static IP address and a email address?
An IP address is the address of your computer on a network. You can have a local IP address if you have a home or office network but also an Internet IP address. Your e-mail address is completely different to an IP address. http://www.whats-my-ip.biz
What is the difference between IP address and Network addressing?
ip is what they use 4 ur computer the other thing is where ur computer is at
What is the difference between network and internet?
AnswerThe difference between the two is that internet is the world wide web and network is local.
What is the difference between a hardware address and IPv4 address?
Hardware address is the MAC address. IPv4 is the IP address. The MAC address is assigned to each network device at the time it's manufactured and does not change. The IP address is manually assigned and can be changed.
What is the difference between 2G network and 3G network?
computers
Difference between ip address and macip?
See the OSI layer. The MAC address is the base addressing. IP addresses ride on top of the MAC Addresses.
What is the difference between active attacks passive attacks in network?
What is the difference between active attacks passive attacks in GSM network?
What is the difference between single stage network and multistage network?
this is out of syllabus
What is the difference between hardware address and IPv4 address?
The hardware address or MAC address is encoded on the NIC by the manufacturer for unique identification of the NIC. This cannot be changed.... The IPv4 address is an internet address usually assigned by a DHCP server for each computer on a network. This address can be changed.
