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(); Instantiating classes$location = $Ip->getlocation (' 218.79.93.194 '); Get where an IP address is located
The location variable returned is an array, including:Copy the Code code as follows: $location [' IP ']//IP address$loc
$location = $Ip->getlocation (' 218.79.93.194 '); Get the location of an IP address
The returned location variable is an array, including:
Copy Code code as follows:
$location [' IP ']//IP address
$location
of the intermediate recordIf ($ ip> $ endip) {// when the user's IP address is greater than the end ip address of the intermediate record$ L = $ I + 1; // change the bottom boundary of the search to an intermediate record plus one} Else {// when the user's
First: Check the physical connection is unblocked.
Configure the IP address on the network adapter connected to the client and the server to ensure that the IP address gigabitethernet1/0/0 the server-side interface is on the same network segment. Ping gigabitethernet1/0/0 interface from the client
The current IP address uses a 32-bit address, represented in dotted decimal format, for example, 172.16.0.0. The address format is: IP address = network address + host
After knowing the IP address and subnet mask, you can calculate:
1. Network Address
2. broadcast address
3. Address range
4. Several hosts on this website
Example 1: the IP
();
Copy the code get_client_ip to support IP address detection and legality verification. the returned value is the obtained IP address. if the obtained IP address is invalid, 0.0.0.0 is returned.
If necessary, you can also retu
Compute related addresses by IP address and subnet mask and operations
When you know the IP address and subnet mask, you can figure out:
1, network address
2. Broadcast Address
3. Address
of the search to an intermediate record plus one} Else {// when the user's IP address is within the IP address range recorded in the middle$ Findip = $ this-> firstip + $ I * 7;Break; // indicates that the result is found and the loop is exited.}}}// Obtain the
IP address and subnet mask used for computingAfter knowing the IP address and subnet mask, you can calculate:1. Network Address2. broadcast address3. Address range4. Several hosts on this websiteExample 1: the IP
Reasonable DHCP parameter settings can completely solve the problem of IP address conflict between routers. In some wireless networks, due to the large number of clients, in order to facilitate the management of these machines, many administrators use the DHCP service provided by the wireless router to Configure TCP/IP parameters for the client, such as the route
-> getlong3 ());$ Endip = strrev (fread ($ this-> fp, 4); // obtain the end IP address of the intermediate recordIf ($ ip> $ endip) {// when the user's IP address is greater than the end ip ad
The popularization of wireless networks has already penetrated into every corner. How can we deal with many technical problems? Here we will explain how to solve the IP address conflict problem. When wireless access points work as DHCP servers, they may cause two major problems.
The first is to increase the possibility of IP
configured on the NIC that the ARP request enters.3. If the value is 2-2, it must be met, and the source IP address of the ARP request and the request IP address must belong to the same subnet before replying.4. Value: 3 -- if the IP ad
bits and 1 are the same, the IP address belongs to the same network segment, the one after the 24-bit path changes randomly and belongs to the same network segment. In this example, the IP address (a) 188.188.0.111 is in the range of 188.188.0.0 ~ 188.188.1.255, which belon
, get an integer of 3, so we have determined that the third segment of the IP address should be divided into three different numbers, that is, set ** in 000000 ** to three numbers. You can only enter 1 and 0, and the numbers are different each time. As for what to fill in, it will be convenient, such as 00000011, convert it to binary, which is 1, 2, 3, so that the third segment is also determined. In this w
can be allocated to 254 computers, 530/254 = 2.086, using the method of entering 1, get an integer of 3, so we have determined that the third segment of the IP address should be divided into three different numbers, that is, set ** in 000000 ** to three numbers. You can only enter 1 and 0, and the numbers are different each time. As for what to fill in, it will be convenient, such as 00000011, convert it t
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