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Welcome!What region are you located?
Are you wired or wireless connected to the router?
So far others are not seeing what your experiencing.
What ISP Service do you have? Cable or DSL?
What ISP Modem do you have? Stand Alone or built in router?
What ISP Modem make and model do you have?If this modem has a built in router, it's best to bridge the modem. Having 2 routers on the same line can cause connection problems.
Double NATTo 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.
Some things to try: - Log into the routers web page at 192.168.0.1.
Setup DHCP reserved IP addresses for all devices ON the router. Setup/Networking
Ensure devices are set to auto obtain an IP address.
Set Firewall settings to Endpoint Independent for TCP and UDP under Advanced/Firewall.
Enable uPnP and Multi-cast Streaming under Advanced/Networking.Link>
Wireless Installation ConsiderationsWhat wireless modes are you using? Under Setup/Wireless/Manual.
Try single mode G or mixed G and N on 2.4Ghz and single mode N on 5Ghz?
Channel Width set for Auto 20/40Mhz or try 20Mhz only.
Try setting a manual channel to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear.
What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES, so you might want to try TPIK only or Auto.
What wireless devices do you have connected?
Any cordless house phones?
Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many?Turn off WISH, and WPS under Advanced.
Try turning off Short GI, WLAN Partition,and Extra Wireless Protection if you have it. Under Advanced/Advanced Wireless.
Turn off all anti virus and firewall programs on PC while testing. 3rd party firewalls are not generally needed when using routers as they are effective on blocking malicious inbound traffic.
Turn off all devices accept for one wired PC while testing.
Check cable between Modem and Router, swap out to be sure. Link>
Cat6 is recommended.Maybe someone can review your router settings with you using Link>
teamviewer if your interested. Its safe and secure.
I have a DIR-857 and lately also upgraded to the 1.0.2 firmware. Before upgrading (and after upgrading) it has been crashing constantly. For me it seems like the wired connections continue to work but the wifi is definitely completely gone each time it crashes. It was not like this when I first got it but it's possible it happens under heavy load as recently as I have been transferring a lot of data through it - both to the USB drive that was connected (and which has now since been disconnected to try to rule it out as a problem) and through the WAN connection.
I have just disabled all the QoS settings and will see how things go.
So far I am totally unimpressed with this piece of junk. I previously had a Linksys and had a much better experience.