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Author Topic: AC 1200 Dir 825 (Need Help) !!!  (Read 1861 times)


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AC 1200 Dir 825 (Need Help) !!!
« on: December 19, 2019, 11:02:56 PM »

Product H/W: G1 / F/w: 1.0.2 / Area : Middle East Location :Saudi Arabia /Support : no support via phone no answer via support ticket not replying

Connecting From other Fiber router with 2 methods :
Fiber Router :
primary IP:
DHCP pool starting from to

Access point (LAN to LAN) via wizard setting :

1) set DHCP pool fiber router from to
2) DLink :static  ip :
               Gateway :
               Dns one time automatic one time one time one time ISP dns
no internet

Router (Lan to wan )

1) open DMZ on fiber router  for ip 192.1681.5
2) Dlink wan :
                  DNS: not waorking changing dns to ISP works for 12 hours or so then stop mac spoof of NIC works again then i think got blocked no work
Nat on
Firewall off
RIP :off
Connection isolate :off
3)Lan settings dhcp ----- to

only internet work for 12 hours or so in wan some say because of nat your mac gets blocked by isp but without that no internet

your help is appreciated


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Re: AC 1200 Dir 825 (Need Help) !!!
« Reply #1 on: December 20, 2019, 11:25:43 AM »

Internet Service Provider and Modem Configurations
  • What ISP Modem/ONT Mfr. and model # do you have?
  • Check cable between Modem and Router, swap out to be sure. Link> Cat6 is recommended.
  • Check ISP MTU requirements, Cable is usually 1500, DSL is around 1492 down to 1472. Call the ISP and ask. Link>Checking MTU Values
  • For DSL/PPPoE connections on the router, ensure that "Always ON" option is enabled.
  • If the ISP modem has a built in router, it's best to bridge the modem. Having 2 routers on the same line can cause connection problems: Link>Double NAT and How NAT Works. Call the ISP and ask to see if the ISP modem can be bridged. To tell if the modem is bridged or not, look at the routers web page, Status/Device Info/Wan Section, if there is a 192.168.0.# address in the WAN IP address field, then the modem is not bridged. If the modem can't be bridged then see if the modem has a DMZ option and input the IP address the router gets from the modem and put that into the modems DMZ. Also check the routers DHCP IP address maybe conflicting with the ISP modems IP address of Check to see if this is the same on the ISP modem, and if modem can't be bridged, change the DIR router to or .0.254.
    Example of a D-Link router configured for PPPoE with ISP Modem bridged: PPPoE Configuration on a Router

If you need to run AP mode on the DIR router, try this:
Turning a router into an AP.

Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.