vlsm subnetting

LAN.WANThe last network segment is a WAN connection and requires 2 host addresses. Support WAN links with just 2 primary seats. 2^2-2 = 2.This leaves 8 bits to define the local subnet address. The next available address block is 172.16.2.192/30.Address: 172.16.2.192Binary representation:10101100.00010000.0000010.11000000Mask: 255.255.255.252Represents 30 bits in binary:11111111.11111111.1111111.11111100The IPV4 host address range provided is:172.16.2.193 to 172.16.2.194, broadcast address is 17

IP subnetting and variable length subnet masks (vlsm) Subnetting Basics Advantages of subnetting: 1. reduce network traffic 2. Improve Network Performance 3. simplified management 4. Easy to expand geographic scope How to creat subnets How do I divide subnets? First, you must note that the power of 2: The power of 2 0

subnets will need to occupy 1 bits of the original host identity bit. At this point the network number bit becomes 22 bits and the host label becomes 7 bits. Similarly borrowing 2 host bits can divide a class C network into 4 subnets ... How did the computer know if the network was divided into subnets? This can be seen from the subnet mask. The subnet mask is as 32bit as the IP address, and the subnet mask is determined by using "1" for all corresponding bits that identify the network number i

First, we know that due to the limited number of IP addresses in the V4 version, we need to continue to divide subnets, reduce the number of hosts and increase the number of networks on the premise of the original subnet, to avoid wasting too many host addresses in a subnet as much as possible, vlsm works for this purpose. Benefits of vlsm: Efficient use of IP addresses Routing aggregation is more pow

______| Chapter 2 |------Classification of route selection protocols~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~RIP V2 featuresBasic configuration of RIP v2* *** RIP v2 implements VLSM Division (Variable Length subnet mask)Summary of CIDR routes implemented by RIP v2RIP 2 implements load balancing with equal hop pathsRIP2 authentication ConfigurationRIP2 configuration passive interface to suppress route update------------------I

Automatic summary is summarized to 172.16.0.0/16 If you are manual, you are happy to summarize where it is, and where it is, just as needed! For example, you can aggregate the data to 172.16.0.0/20 or 172.0.0.0/8. For example, if the ISP gives tnt a 210.231.223.0/24 network, if it is hidden by default, it is/24, then there is only one network segment and there are only 254 addresses, then in a practical application, TNT only assigns addresses of 64 hosts to Qingdao Company, which must b

Read Catalogue I. IP Address Basics 1.1 IP Address structure and classification 1.2 special IP address 1.3 subnet mask 1.4 IP address request two. subnetting 2.1 subnetting Concept 2.2 Class C sub-network Division 2.3 subnetting Step 2.4 subnetting Case 2.5 sub-division Network considerations 2.6 Why

IP addresses are classified into five categories--------------------------------------------------------------------------------------------------------------- ----------------------------------------------------the meaning of the subnet mask and subnetting according to the subnet maskThe subnet mask is used to divide subnets. For example, a Class A network can hold 16777214 hosts. However, in practice, it is impossible to use a class A network only f

addresses: "192.168.5.253/30, 192.168.5.254/30"Broadcast address: "192.168.5.255/30"quickly divide subnets to determine IPLet's take example 2 for example:The topic requires that we divide the 192.168.5.0/24 network address into subnets that can accommodate 101/54/2 hosts. Therefore, we need to determine the host location, and then determine the network bit based on the host bit, and finally determine the detailed IP address.① determining the host bitSet the number of hosts that you need to be

11111111Example of subnetting:1, a company to apply to a class C IP address, but to connect 6 subsidiaries, the largest one sub-The company has 26 computers, each subsidiary in a network segment, the subnet mask should be set to?A: Assume that the C network address is 192.168.0.0/24,6 subsidiary, namely Divide 8 subnets, two not, each subnet can hold 30 IP192.168.0.0-192.168.0.31/27-255.255.255.224192.168.0.32-192.168.0.63/27-255.255.255.224192.168.0

First, a sample from a Shehiren teacher's book is referenced:Host H1 the process of sending packets to H2:First, with the subnet mask in the subnet:255.255.255.128 and target host H2 IP address:128.30.33.128 and get network number: 128.30.33.128. Obviously this does not match the network number of Subnet 1:128.30.33.0.The datagram is then forwarded by the default route R1 Subnet 1. At this point, R1 will look for its own routing table. Think of the host address and subnet mask of the H2, and whe

application, a company applied for a public network, such as 201.1.2.0/24, but the company has two groups, a group of the number of hosts is 6, the number of hosts in the other group is 4, and do not want the two groups of hosts to communicate with each other, if you apply for a public network , the cost is too high, so it is necessary to divide this network into multiple subnets. The subnet is divided by the first m bits in the host bit in the network address and the network address bits as th

mask calculation. Network ID Results We all know that the network ID part is unchanged, the host ID portion becomes 0, then in the calculation of the network ID, first look at how many bits in the subnet mask to represent the network, corresponding to the IP address conversion to binary only the previous few, such as 192.168.176.15/ 19, the network ID altogether 19 bits, then the network ID the first two bytes is 192.168.x.0 to change the third byte. So how do you quickly calculate the value o

this resource?For example: 140.0.0.1/8 - 140.0.0.255/8 北京140.0.1.0/8 - 140.0.1.255/8 上海140.0.2.0/8 - 140.0.2.255/8 广州140.0.3.0/8 - 140.0.3.255/8 深圳 Now that we use VLSM technology, we can divide it into some sub-network segments for a reasonable allocation of resources, let us look at the following two network segments: 140.1.0.0/16140.2.0.0/16 This and the above network segment looks different, the actual is that we use

simply the number of subnets to pursue, must meet the basic requirements, and consider leaving a certain margin.3) Determine the subnet addressIn the above subnetting scheme, the IP address available on the campus network is:Sub-network 1:256.26.1.1~156.26.1.254Sub-network 2:256.26.2.1~256.26.2.254Sub-network 3:256.26.3.1~256.26.3.254......Sub-network 254:256.26.254.1~256.26.254.254Seven, variable length subnet mask (

IntroductionThis article describes what the IP address and its function and IP address composition, IP address classification, IP subnet partition, subnet mask, public address, private address,VLSM (variable eldest son netmask), CIDR (Non-class inter-domain routing) and other CCNA basics.Article Directory0x1. What is an IP addressthe role of the 0X2.IP address0x3.ipv4 Address Composition0x4.ipv4 Address CategoriesA. Reserved IP addressB. Private IP ad

price is more to die! Why is it so complicated? Because there is a class of IP age, "IP class" implied a lot of hidden information, information is not a high degree of cohesion! You can get a lot of things from the class ... This is not the way of God. 1.2. No class and VLSM Subnets are divided in varying degrees in each body, however, it is not enough to divide the subnet, first, the sub institutions in an organization are not necessarily the sam

indicated in the routing table; otherwise, execution (6);(6) Error in report forwarding packet;5. No classification addressing CIDR (constituting an ultra-network):(1) Variable eldest son netmask vlsm: Indicates that several different subnet masks can be used simultaneously in a network that divides subnets;(2) Non-categorical inter-domain routing CIDR:**CIDR eliminates the traditional Class A, Class B, Class C addresses and the concept of

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

into a hardware address, This hardware address is placed at the header of the Mac frame of the link layer, and then the next hop router is found based on this hardware address. Dividing the subnet only divides the host number of the IP address, not the original network number of the IP address. The same IP address and different subnet masks can be used to derive the same network location. However, different mask effects are not the same. No classification addressing CIDR (constituting a network