D-Link DSL-3900 User Manual

99D-Link DSL-3900 User Manual
Section 7 - Troubleshooting
3. Why can’t I connect to certain sites or send and receive emails when connecting through my router?
If you are having a problem sending or receiving email, or connecting to secure sites such as eBay, banking sites, and Hotmail,
we suggest lowering the MTU in increments of ten (Ex. 1492, 1482, 1472, etc).
To nd the proper MTU Size, you’ll have to do a special ping of the destination you’re trying to go to. A destination could be
another computer, or a URL.
• Click on Start and then click Run.
• Windows® 95, 98, and Me users type in command (Windows® NT, 2000, XP, Vista®, and 7 users type in cmd) and
press Enter (or click OK).
• Once the window opens, you’ll need to do a special ping. Use the following syntax:
ping [url] [-f] [-l] [MTU value]
Example: ping yahoo.com -f -l 1472

D-Link DSL-3900 Specifications

General

Ethernet WAN	Yes
SIM card slot	-
Wi-Fi band	Dual-band (2.4 GHz / 5 GHz)
WLAN data transfer rate (max)	2600 Mbit/s
WLAN data transfer rate (first band)	800 Mbit/s
WLAN data transfer rate (second band)	1753 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Ethernet LAN (RJ-45) ports	4
Security algorithms	WPA, WPA2
Processor cores	2

Weight and Dimensions

Depth	45.5 mm
Width	258.8 mm
Height	184.1 mm