A lot of friends are mentioned, how to prevent breakdown of IP address conflict? This is encountered via regular meeting in actual project, if network user did not set the sentence of IP address according to the regulation, phenomenon of IP address conflict is inevitable, once this kind of phenomenon happens often, not only can affect online efficiency, and the stability that also goes against network of local area network moves.
Run stability to raise a local area network, when we cannot wait for breakdown of IP address conflict to happen, just think method goes answering, and should hit out actively, let online user cannot grab the other IP address in using a local area network.
One, what is the account that produces Ip conflict?
Produce the account that IP address conflicts:
1, a lot of users do not know " IP address " , " child net attack by surprise is piled up " , " acquiescent gateway " wait for parameter how to be installed, sometimes the information that the user is not afore-mentioned parameter that get from manager department, or the user revised these information place to bring about with privately innocently;
2, sometimes when administrator or the parameter that the user offers according to the administrator undertake installing, because error causes parameter to be defeated by a fault to also can bring about this circumstance to happen;
3, those who appear at most is when client computer maintenance is debugged, maintenance technician is used temporarily IP address application is caused;
2, group net citing
Citing:
The local area network has 150 networks node about, smooth equational cloth is in these network node 6 floor, the network node in each floor passes 100M double skeining thread and common 2 switching equipment protect join, and each common 2 switching equipment pass join of cable of 1000M fiber-optic wire to go up by switching equipment to the road again, visit safety to assure a network, all network node passes hardware firewall and each other of Internet network interconnection to connect.
Current, what unit local area network uses is 10.168.163.0 nets paragraph IP address:
This net paragraph in use acquiescent gateway address is 10.168.163.1, child net attack by surprise piles up an address 255.255.255.0,
As a result of this net paragraph can have address of 250 many IP at most, use 150 many addresses actually in working at ordinary times only, apparent and enough the requirement that large address space surplus can satisfy workstation amount completely to increase ceaselessly.
But because unit local area network used static address,allocate a method, when workstation system happens to break down suddenly or encountering virus attack cannot be started normally every time, online user go one's own way, reinstall a system at will, revise online address, intermediate frequency of result local area network is numerous phenomenon of conflict of occurrence IP address, this not only the normal online visit that affected another person badly, and the maintenance that also increased network manager workload.
3, solution
Alter to avoid online user random effectively IP address, so the plan uses an address to bind decided method, the physical address that blocks the IP address of workstation and corresponding network equipment (MAC) is bound be together surely, however this kind of method still is not the most effective, it is take temporary solution not effect a permanent cure, because get online,the user still can use modification computer network to block the method of physical address, come the IP address of filch other, very apparent this kind is not the most effective settle way.
4, how ability is solved effectively
Analysis
The to common workstation IP address on core switching equipment and address of net card physics (MAC) undertakes binding deciding operating, but undertake simply binding deciding operating, insoluble also online user installs the phenomenon of IP address at will,
After once be installed to bind,be being decided because of address of a certain IP, although get online,the user cannot continue to grab with this IP address, but he still can grab the IP address that leisure is in in using a local area network, come so phenomenon of IP address conflict still may happen.
This also is manager of a lot of networks 100 consider the issue that does not get its to solve: After the address binds the IP that in lieutenant general of core switching equipment all workstation use to arrive surely on corresponding MAC address, still cannot prevent address conflict breakdown effectively.
Want to resolve trouble of IP address conflict thoroughly, we not only need already will allocate the IP address that go out to bind in the local area network block equipment to go up to corresponding net surely. And the IP address that still needs unwanted to those is in position undertakes binding deciding.
Get online so user both neither can use the IP address that has linked net workstation, cannot use the disengaged IP address in the local area network again, because this wants a local area network only,medium online user alters at will the word of IP address, he cannot receive network of local area network normally in.
After be being configured so nevertheless, also brought another trouble, when if there is new user in the local area network,needing online visit namely then, cannot make a director choose IP address by oneself, and must apply for to get online alone to network manager beforehand, the need after network manager accepts application logins enter switching equipment tiring-room to manage a system to undertake putting number to disengaged address, online user ability receives a local area network repeatedly normally in. Carry out a proof, this kind of method not only can avoid breakdown of IP address conflict effectively to happen, and still prevent network virus effectively to travel illegally through the local area network, the stability that ensures a local area network effectively thereby moves!
5, executive process
Afore-mentioned theory analyse according to, the plan will acquiesce in the local area network first gateway address 10.168.1.143 bind the physical address that decides correspondence to go up, can control the outbreak of virus of the ARP in the local area network effectively so, way thinks again later to getting online the IP address of workstation is carried out tie calm operation, concentration binds the IP address that is in those unwanted position finally to arrive surely a fictitious net blocks physical address to go up, can achieve one Shi Erdiao's result so.
1, so how to bind the address that decide Ip and Mac physics address?
Input Cmd to enter a command to configure accord with above all, input command Ipconfig/all next, examine this machine Ip and Mac address case.
Input string commands " Arp -s 10.168.1.1 34-F3-9A-2B-9E-13 " , can bind calm.
Inquiry binds back-to-back input command Arp -a to whether succeed surely.
Apparent, acquiescent gateway address 10.168.1.143 be bound to decide 36-F3-9A-2B-9E-13 by the success, on MAC address, when other workstation gets online in the future when if grab,using 10.168.1.143 addresses, can appear the breakdown phenomenon that cannot get online, come so the moving stability of whole local area network can get assuring.
Use other IP address to prevent an user to grab, we need to bind the address of node of 150 or so networks that has gotten online rise surely, because wait for,bind decided address amount more, method of pure support handiwork gets the net of every workstation to block physical address and IP address, workload will very tremendous, configure condition to fall in the overall situation of system of switching equipment tiring-room so, carry out " Display Arp " string command, the content that will show the watch of switching equipment ARP that come out is medium later is duplicate in copying issue of this locality age to edit the window originally, after be being revised through simple editor, the ARP watch content after will be being revised again is duplicate and stickup in watch of switching equipment ARP, can be finished quickly so already got online of workstation address bind calm task.
2, the Ip address that binds calm leisure
To leaving 100 disengaged IP addresses of the left and right sides, we can use manual method ordinal each disengaged IP address is bound arrive surely on fictitious MAC address, should bind 10.168.1.156 addresses for example when going up to 07-1e-33-ea-89-75 surely, we can configure condition to fall in the overall situation of system of switching equipment tiring-room, executive string commands " Arp 10.168.1.143 07 1e 33 Ea 89 75 " , we press same method again later IP address binds will other leisure to arrive surely on 07 1e 33 Ea 89 75 of fictitious MAC address.
3, came to new user, can release Ip address to give him
After finishing the address above to bind calm task, any users cannot change IP address at will, the 10.168.1.156 addresses that if has new user to need to use leisure right now get online when the visit, network manager is OK according to the operation measure below, release 10.168.1.156 addresses from inside binding calm address list:
A, manage a system to carry out by switching equipment tiring-room in the road above all " System " command, configure systematic condition switch condition to overall situation, below this condition input string commands " Display Arp " , after clicking carriage return to bolt, from inside the ARP list that appears ever since check looks up 10.168.1.156 addresses to whether be in unwanted position, if target IP address is in unwanted position, we can continue to carry out below release measure:
B, input string to command next " No Arp 10.168.1.156 07 1e 33 Ea 89 75 Arpa " , after clicking carriage return to bolt, target IP address 10.168.1.156 bind from the address; was released in deciding list
C, below the user that tells 10.168.1.156 addresses to need to get online, in letting him install this IP address corresponding workstation system, in add an user newly to receive network of unit local area network smoothly so;
D, later the system runs in the tiring-room of core switching equipment, continue to carry out string to command " Display Arp In 10.168.1.156 " , from inside the result interface that returns ever since we can be examined get correspondence the address of net card physics of 10.168.1.156 addresses is 00-bb-eb-c3-c6-d0;
E, after getting this MAC address, we can continue to carry out string to command " Arp 10.168.1.156 00 Bb Eb C3 C6 D0 Arpa " , come so the IP address of new online user and address of net card physics are bound to be decided together by the success,
Ordinal finally executive string commands " Quit " , " Save " , in saving afore-mentioned configuration operations switching equipment system, end switching equipment configures the task.
