how to calculate subnet mask

Because to do the static address configuration JS Check, find a lot of information found on the internet is about ip,mask validity check, no ip,submask,gateway logic judgment, write down the code for the needs of people reference.Popularization of Gateway address knowledge:is to proceed with the operation 1 with 1 with a 0 for 0,0 and 0 for 0. First, the IP and subnet masks are expanded 10.70.64.223

Subnet MaskCalculator-Subnet Mask Calculator Http://bbs.szwblm.com/dv_rss.asp? S = XHTML boardid = 15 id = 25017 page = 6 The subnet mask (subnet mask) is also called the netw

Subnet Mask calculation: Decimal Turn binary:Decimal:23-> 111,010 Binary2|23---12|11---12|5---12|2---02|1---10Move the remainder from bottom to top, from high to Low: 10111 Binary goto decimal:Binary:11011-> 272 binary system1 (24) + 1 (23) + 0 (22) + 1 (21) + 1* (20) = 16 + 8 + 0 + 2 + 1 = 27From right to left, 2 of the N power operation, n increments from 0, and then multiplies each bit of

The IP address consists of 32 bits, divided into four segments, consisting of a network number and a host number. Also divided into a b C D e Five address, where a B class C address for distribution to the global network users, D E class is a special address.1, Class A address 1.0.0.0 to 126.255.255.255Only the first paragraph is the network number, and the remaining three paragraphs are the host number. In binary notation, there are 8 bits, or one byte is the network number, and 24 bits, or thr

Because to do static address configuration JS Check, find a lot of data found online are about ip,mask validity check, no ip,submask,gateway logical judgment, write down the code for the needs of the people reference. Popularization of Gateway address knowledge: 1th: Proceed with the operation 1 with 1 1,1 with 0 for 0,0 and 0 for 0. First, expand the IP and subnet masks10.70.64.223 00001010.01000110.0100

1. How many subnets will be generated The X power of 2-2 (X represents the mask bit, that is, the part of the binary system that is 1. In the current network,-2 is no longer required and can be used in all, however, you need to add the corresponding configuration commands. For example, you can use all the commands by adding the IP subnet zero command to the Cisco router .) Note: I have read a lot of boo

Have always felt that the internet is a magical thing, in the use of the time is also very confusing, you think?Have you ever wondered: what does a subnet mask do? Why is it as if it can be configured to surf the Internet (of course, now sometimes it seems to be a spell of luck)?Pre-Knowledge: Windows View routing commands:Route print The route is mainly divided into: (detail reference: http://blog.

1. The subnet mask is the IP reference:Split the network segment with!Like 192.168.0.1 and 192.168.0.2.(1). Subnet mask is 255.255.255.0So 192.168.0.X in the same network segment, can access each other.(2). Hope the Mask is 255.255.0.0So 192.168.x.x in the same network segme

A few words to master subnet mask, IP address, host number, network number, network address, broadcast address1, 191.172.16.10.33/27 in the/27 that is, the subnet mask is 255.255.255.224 that is 27 full 12. From the subnet mask 25

IP Address Subnet mask calculation, return IP segment start and end range, length, mask and other information. /** * Mask Calculator * @author Weaksun * @param string $ip IP * @param Numeric $bits Mask * @return Array Ret

This article mainly introduces Python's simple method to implement subnet mask conversion, and involves Python string-related operation skills. If you need it, refer to the following example to describe Python's simple method to implement subnet mask conversion. We will share this with you for your reference. The detai

"Data Collation" Cisco [OSI, IP Address, Network Segment, Subnet Mask]###concept###----------------------from20110712to201107161.networksegment{ Router;switch;bridge;} 2.lanblocks{broadcastdomain;broadcaststorm;multicast;lowbrandwidth;} 3.benefitsoftherouter{!forwardbroadcast;filtermsgsonlayer-3 ( Networklayer);} 4.benefitsoftheswitch{enhancelanperformance;supplymore Blandwidth;} 5.collisiondomain{datapacke

An error occurred while adding new nodes to Oracle11gR2RAC -- IP subnet mask system environment: Operating System: RedHatEL5Cluster: OracleGI (GridInfrastructure) Oracle: Oracle11.2.0.1.0: RAC System An error occurred while adding new nodes to Oracle11gR2RAC -- IP subnet mask system environment: Operating System: RedHa

In this paper, we describe a simple way to implement the subnet mask transformation in Python. Share to everyone for your reference, as follows: In this implementation, the subnet mask length is converted to the specific subnet mask