how to subnetting for class c

address divided into 2 subnets with 22 bits to identify the network number, its subnet mask is: 1111111111111111 1111111110000000 is 255.255.255.128. So we can see that the default subnet mask for Class A addresses is the 255.0.0.0,b class of 255.255.0.0,c class 255.255.255.0. The following table is the Class C address subnetting and related subnet masks:Number of subnet-subnet-netmask hosts available hosts1 255.255.255.128 128 1262 255.255.255.192 6

mask, so that it is convenient to obtain the IP address of the network address, and do not need to find the routing table. A subnet mask is an important property of a network or a subnet. In each item of the router's routing table, in addition to giving the destination network address, you must also give the subnet mask for the network. If a router is connected to two subnets, two IP addresses and subnet masks are given 、、。 Forwarding by using subnet time group

192.168/16When connected to a public network, it is converted to a public address via NAT (Network address translation) NAT: Public Private One by one correspondence (typically used to hide internal structures) PAT: Re-use the IP by changing the port number; The disadvantage is that each time you have to disassemble the tcp,checksum, and then look at the port number 3 Mask and CIDR (classless Inter Domain routing classless routing between domains) Definition: Continu

IP Address Five classes of IP addresses, just remember 0-127,128-191,192-223,224-239 (multicast), 240-255 (reserved), 127 is the self-ring address, 0.0.0.0 is the network address, 255.255.255.255 is the broadcast address. Private IP three classes, 10.x.x.x,172.16.x.x-172.31.x.x,192.168.x.x. Sub-network DivisionFrom the point of view of address assignment, the subnet is the extension of the network segment address. In order to make the use of IP address more flexible, only assign IP address netwo

can be multiple paths between routers to balance the load, improve reliability.3, subnetting: The switch can only recognize the MAC address. The MAC address is a physical address and has a flat address structure, so you can't divide subnets by MAC addresses. While the router recognizes the IP address, the IP address is assigned by the network administrator, is the logical address and the IP address has a hierarchy, is divided into network number and

divide its physical network into several subnets. Dividing subnets is purely a matter within a unit, and it still manifests itself as a network2. The method of subnetting is to borrow several bits from the host number of the network as the subnet number, of course, the host number corresponding to reduce the same number of digits, the IP address becomes: IP address::={3. Any IP datagram sent from another network to a host in this unit is still locate

172.16.127.255 and 172.16.191.255, respectively.5. Valid host range is: the host address of the first subnet is 172.16.64.1 to 172.16.127.254; the second one is 172.16.128.1 to 172.16.191.254.Class B Address Example 3: Network address: 172.16.0.0; Subnet mask 255.255.255.224 (/27)1. Subnet Number = 2 of 11 -2=2046 (because the class B address default mask is 255.255.0.0, so the network bit is 8+3=11)2. Number of hosts = 2 of 5 square -2=303. Valid subnets?: Block size=256-224=32; So the first s

diagram of the whole network Can update the database faster, the update process converges quickly In order for OSPF to be used in a large-scale network, it divides an autonomous system into multiple regions, so that the range of exchange-state information using the flooding method is limited to every region, reducing the amount of traffic on the network OSPF is sent directly with an IP datagram without UDP OSPF can calculate different routes for different types of business L

.... are learning ...There is also a Han Ligang teacher's course is also very good, learning the IP address subnetting Ultimate Explanation V2 Video Course after the conversion of the value of a more profound understanding ...650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M02/82/39/wKioL1dOsA_iQdWhAADb6OrZNRk495.jpg-wh_500x0-wm_3 -wmp_4-s_1174112190.jpg "title=" IP address. jpg "alt=" wkiol1dosa_iqdwhaadb6orznrk495.jpg-wh_50 "/>The 2 standard

, and hosts within the private network cannot communicate directly with the public network. But through the network address translation, they can do the latter.And then what. Then represents the IPV4 of the past, just like the simple occupation of operations, will soon be forgotten. Just a matter of time, so in the IPv4 world, we are 32-bit, this 32 is like the song fat that can't Meet the girl, do not like to say that they are fat skinny. Even if the affectionate singing Buddha in a line, or ca

local LAN, not used in the public network.subnets and masks:Traditional IP Address allocation method, the waste of IP address is very serious. In order to make full use of the existing IP address, the concept of mask and subnet (subnet) is proposed.The mask is a 32-bit number corresponding to the IP address, some of which are 1, and some 0. In principle these 1 and 0 can be arbitrarily combined, but generally in the design mask, the network number and subnet number of the bit value is 1, the ho

This information from the Huawei Enterprise Technology Exchange community about the computer network is very good, recommended to everyone!The following is a link to a series of articles:"Big Pulpit 01" Using TCP/IP model to understand data communication processHttp://support.huawei.com/ecommunity/bbs/10217323.html"Number of Big pulpit 02" IP subnetting (VLSM)Http://support.huawei.com/ecommunity/bbs/10217327.html"Number of Big pulpit 03" IP Routing Ba

Technology and application OSI and TCP/IP model, subnetting, VLAN, VTP, STP, ACL, OSPF and other network technologies 240 World top 500 Enterprise Desktop Engineer Course Enterprise Common computer hardware and software failure, Enterprise Client security, Outlook mail client, Lotus notes mail client, print scanning machine enterprise application, projector enterprise application, service desk, event management, problem

"192.12.0.0/19"2, 10000001.00001010. 00100000.00000000/19 "192.12.32.0/19"3, 10000001.00001010. 01000000.00000000/19 "192.12.64.0/19"4, 10000001.00001010. 01100000.00000000/19 "192.12.96.0/19"5, 10000001.00001010. 00000.00000000/19 "192.12.128.0/19"6, 10000001.00001010. 10100000.00000000/19 "192.12.160.0/19"7, 10000001.00001010. 00000.00000000/19 "192.12.192..0/19"8, 10000001.00001010. 11100000.00000000/19 "192.12.224.0/19"Select 7 from each department and assign one. The number of hosts availa

about how PHP pages turn English pages into French Title. I was trying to press a button. Convert all pages in a website from original English to French. I'd like to ask if this is possible. How can I change a single page from English to French? Seek the Great God. ------Solution-------------------- Customize multiple languages, such as en_lang.php,fr_lang.php, to write all variables in 2 different cases in the language pack. Determine which file to invoke by session. ------Solution---------

2 Networking SkillsYou need to understand the basics of networking, such as the following. Dhcp Nat Subnetting IPv4 IPv6 Public v Private IP Dns Routers and switches VLANs OSI model MAC addressing Arp As we are often exploiting these technologies, the better you understand how to they work, the more successful you'll be. Note that I do not write the guides below, but they is very informative an

, irrelevant. Their concept of the network, the network number is not the same as the theoretical books, we talked for a long time before we found two people, not a thing to say. Such as:After introducing subnetting conceptsnetwork Block =(network number >,subnet number >,host number >) (1)After the introduction of the subnet mask concept Network block = ( network number >, host number >) (2) Although the subnet number of the formula (1

that the default subnet mask for Class A addresses is the 255.0.0.0,b class of 255.255.0.0,c class 255.255.255.0. The following table is the Class C address subnetting and related subnet masks:Number of subnet-subnet-netmask hosts available hosts1 255.255.255.128 128 1262 255.255.255.192 64 623 255.255.255.224 32 304 255.255.255.240 16 145 255.255.255.248 8 66 255.255.255.252 4 2You may notice that the table above is divided by the number of hosts an

guarantee the uniqueness of the host address, but brings two burdens: first, huge network address management overhead; second, the gateway path is expanding rapidly. The second is particularly prominent. The expansion of the path finding table not only reduces the efficiency of the gateway path finding (or even overflows the path finding table, resulting in a path finding fault ), more importantly, it will increase the overhead for refreshing internal and external paths, thus increasing the net

255.255.255.240:/28 22. mask 255.255.255.248:/29 23. mask 255.255.252:/30 subnetting class A, B c AddressQuick cut for editing this section 1. How many subnets will your selected subnet mask generate? 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