ip address

[viddz]

Iam using dongle to connect to the internet. This what ipconfig shows. any xplanations????

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 101.2.177.103
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 101.2.177.103

[Saman]

I'll tell you some more information

Code: Select all

inetnum:        101.2.176.0 - 101.2.191.255
netname:        AIRTEL
descr:          Bharti Airtel Lanka Pvt. Limited
country:        LK

You are dynamically assigned with WAN IP 101.2.177.103 by Airtel guys and that's your default gateway (the IP used to go to Internet) as well. Say another LAN adapter is there which you share your internet connection. Packets of that network will come to your machine first and then sent to internet over the default gateway (which is your dongle).

I don't see any problem with that, do you?

[viddz]

wat about the subnet mask?? 101.2.177.103 is class A(public) ip address. So subnet mask should be 255.0.0.0. How it becomes 255.255.255.255?

[Saman]

According to the network theory I leaned many years ago, I can't remember I learned any connection between network class and subnet mask. It could be calculated for each class to be useful, that is true.
When your subnet mask is 255.255.255.255, that means it is a single host subnet.

check my setting on a SLT ADSL connection with a class C WAN IP.

sltadsl.jpg (22.6 KiB) Viewed 7327 times

[viddz]

Got it. 255.255.255.255 is for PTP networks. Thanku

[SemiconductorCat]

are you asking how class A , Class B and class D , E are encoded?
It's encoded using a simple bit parttern .



Network class due to it's bit pattern it restricts to some IP range.And Number of bits
which could be used in the host address and the network address filed.


if you masked a particular IP from a network mask you'll simply obtain the network address.
As Simple as that.

Where subnet mask is totally different from the class A, B, C default network mask.
So generally there is no connection between network mask and the class that your
ip belong.


Hope this may be useful.