Specify Additional Settings 
Maximum size to use for pinging. (Larger packets are fragmented.) 
Used in some DHCP environments. 
Used in PPTP environments or with VPN. 
 
Tips 
An incorrect MTU setting can cause Internet communication problems. You might not be able to 
access certain websites, secure login pages, or FTP or POP servers. 
 
Clone MAC 
Some ISPs will bind your broadband account info and a specified MAC address of your computer 
together. If you can only access the Internet with a specified computer without a Router, you can try 
cloning MAC address for normal Internet access. By default, it clones the factory MAC address (the 
MAC address of the router). If you want to clone the MAC address of the current attached computer, 
select Clone Local Host’s MAC and click OK on the bottom of the page. 
 
If you want to clone other MAC address, or change the Router’s MAC address, select Manual and 
type the Mac address in the following box. 
 
WAN Speed 
By default, the WAN rate is Auto. Generally, it is not advisable to change the default value. When 
the cable length between your Router and the remote device (modem, Router, etc.) is relatively long,