The author of the ADSL Modem for the Shida 2110EHR V4.5 (Dailu You), and has been achieved through its four machines to share Internet access. Recently, ADSL Modem started very frequently dropped calls. Broadband ADSL Modem connected through after a few minutes, can not open the page, Ping NIC address, no response, ADSL Modem dropped. Reopen ADSL Modem few minutes later, again dropped, so the cycle.
Failure Analysis
Under normal circumstances, ADSL Modem dropped several reasons: line quality issues, ADSL Modem and the flow of excessive heat problems.
First check the line, and ADSL connected phone call clarity, no noise, wiring is also right around there is no high-frequency electrical equipment, ADSL Modem boot process (including dropped later), the indicator is also normal, so rule out the line quality problems. Second, when the discovery of ADSL Modem dropped immediately test its temperature, feeling slightly hot, temperature normal. Since it connects four computers, so unplug the other three computers connected, leaving only one line, fault still, this may exclude the amount of traffic caused by the possibility of failure.
Is ADSL Modem own routing problem. I configure the program, the ADSL Modem is set to dial-up, and then carried out by the computer dial-up Internet access, everything is normal. Is it bad ADSL Modem for routing? At this point I found the software firewall is constantly alert. Showed multiple IP continues to connect the 135,445,2745,6129 other ports. I finally found the cause of the malfunction, the original time when the Internet by routing, public network (Internet) of the IP address is bound together with the ADSL Modem, the absence of open NAT (network address translation), the external connection requests to this address in fact the role of the above in ADSL Modem, ADSL Modem during data transmission, routing time is running at full capacity, when faced with a large number of connection requests, the computing power will be insufficient to result in dropped calls.
Solution
First, the computer's IP address and the IP address of ADSL Modem settings in the same network segment. Then enter the ADSL Modem's Web management page. Click on the page "Services" in the "NAT" option, select "Enable" and click "submit" button. Then click the page in the drop-down menu, select "NAT Rule Entry", then click the page "Add" button to add NAT rules will pop up a window, in the "Rule Flavor" column select "BIMAP". In the "Rule ID" column, fill in an ID than the existing rules, large numbers on the line (to ensure that this rule is the last rule, the old rules do not change), in the "Local Address" column casually enter a LAN There is no address, then click the "submit" button.
Finally, back to the home page Web administration page, click on "Admin 鈫?Commit & Reboot 鈫?Commit" save your changes, then click "Reboot" to restart the ADSL Modem.
After such a setting, adsl frequent dropped calls never happened ADSL Modem disconnection phenomenon, thus, failure to resolve. Above is essentially the original role of the ADSL Modem to the LAN connection requests transfer station does not exist in a computer, it can reduce the burden of ADSL Modem, the Internet really will not affect the computer.
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