Problems with computer assignment of IP, questions about IP address assignment, problems with algori

It's more like a network problem, 1. Replace the network cable.

2. If it is an additional network card, please change the slot.

3. If it is extended from the panel on the wall, please pay attention to the contact of the RJ45 head.

Ping first, will it work!! Then ipconfig to see if you get the IP. If not.

You check the settings in the online neighbor attributes.,Is it set to get it automatically.。。 If the ping fails, we recommend that you check the network cable. Or see if the mail machine is normal!

Try it with the network cable next to you to see if it's your computer or the network.

If the network cable is normal with other network cables, and the network cable here is not normal, it means that the network cable is a problem.

Check if your network cable is not in good contact or if the cable quality is defective.

Replace your router or switch port to see if there is a problem with its port.

This situation has been encountered. I've come across this before. When your computer is automatically assigned an IP address it will be recorded in the route.

Then there was another computer that was set to a fixed IPAnd it just happens to be in conflict with your IP. This way you won't be able to connect to the internet.

Settle. Or set up auto-dispensing for each unit. Either set to a fixed IPThere will be no conflict.

According to what you said, it looks like your network hardware connection is not very good. If there is no problem with the hardware, then assign an IP to your computer. For example.

If it still doesn't work, find a network administrator.

You can specify a fixed IP by yourself, or it's a problem with the router interface I've had before.

Is the address pool set?

Is there a duplicate IP?

Let's set up a static IP.

Either the quality of the network cable, the network card interface and the crystal head are loose.

IP addresses are conflicting because other computers use the same IP. Whatever you do, just make sure that the IP of all your company's computers is unique. Don't let someone else's computer have the same IP as yours.

I went to someone else's machine to open the IP and changed my own last one,

The first 22 digits are the network number.

Subnet mask conversion binary is.

The first 30 digits here are all 1s

The number of bits occupied by the subnet number is 30-22 = 8 bits.

So there can be so many subnets as 2 8 = 256.

The last two digits are 00, which means that you can assign 4 IPs in the subnet.

Since 00,11 are not usable, there are two at most.

Therefore, the IP structure is that the first 22 bits are the network number, and the next 8 bits are the subnet number. The last 2 digits are the host number.

22 in the office address block represents a 22-bit subnet mask, which means that you have 4 Class C addresses, that is, 4x254 IP addresses available.

Each department presses252 Divide the subnet, .252 is counted as 30 according to the number of subnets, that is, each department has 4 IPs available, excluding the broadcast address and network segment labels, the real usable IPs are two.

The IP of the department is simply from 0 to 254, every group of 4, starting with the network segment flag and ending with the broadcast address, for example, in the address range, 1 and 2 are available, and in the address range 5 and 6 are available.

22 represents that the subnet mask has 22 1s, and the IP address is 4 segments, each segment has 8 bits, that is, the IP address has 32 bits of binary bits, and 22 is the subnet mask.

32 minus 22 and 10 more.

That is, you have 2 to the power of 10 to plan your own space, and you have 1024 IPs

1. For the sake of cost, it is recommended that ordinary users use a private address, and convert NAT to a public address at the exit.

2. Each independent department assigns its own IP address block (Class C address block is recommended). Note: Configure pointing routes on routers and Layer 3 switches.

3. It is recommended that the number of hosts for each independent network segment should not exceed 100. If there are many hosts, it is recommended to statically assign IP addresses, otherwise it will take a long time to obtain the addresses automatically, or even the addresses cannot be obtained.

4. For the server that registers the domain name and some special hosts, if you want to log in remotely on the Internet, you should give them the public network address. There are two ways, one is to assign them public IP addresses, and then the router assigns a small subnet and LAN port to them. It is also possible to do static mapping at NAT time.

In the first case, there are more hosts allocated to the public network, and the second case is suitable for fewer hosts, so only a few static mappings can be done).

5. For servers or hosts that share resources, you need to configure a static IP address.

With class A, ah. The subnets are then divided, and each branch is assigned a small segment of IP

Oh, it depends on how you distribute it, it's better to find technology.

Hello! The ISP address segment in your question is a CIDR block that includes 8 Class C addresses, i.e. What you're asking is what is the IP address of each router?

I don't know if the ISP address you mentioned refers to the address assigned by the ISP to the user, if it is an address assigned to the user, you can plan the address for each router as needed. However, since there are 120 hosts per workgroup, the mask for each subnet should be a minimum of 25 bits, i.e., 24 bits (which is also acceptable). If you want to ask what is the interface IP address of the router itself, and the interface address also needs to be in use, then we can arbitrarily take out a piece of address to be the interconnection address of the device, and the remaining address segment as the user address.

Of course, you can also plan another private network address as the interconnection address of the device, and use the entire 8 Class C addresses assigned by the ISP as the client address.

Also, if you don't look at the mask, you describe the two IP addresses respectively. If it is represented as and or , it usually represents an address range, or a specific address in a network segment.

The addresses range from to;

The addresses range from to;

The addresses range from to;

The addresses range from to;

FYI.