Netgear WNR2500 User Manual - Page 49

Change the MTU Size, ADVANCED > Setup > WAN Setup - vpn

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N450 Wireless Router WNR2500  To set up a default DMZ server: 1. Select ADVANCED > Setup > WAN Setup. The WAN Setup screen displays. 2. Select the Default DMZ Server check box. 3. Type the IP address. 4. Click the Apply button. Change the MTU Size The maximum transmission unit (MTU) is the largest data packet a network device transmits. When one network device communicates across the Internet with another, the data packets travel through many devices along the way. If any device in the data path has a lower MTU setting than the other devices, the data packets must be split or fragmented to accommodate the device with the smallest MTU. The best MTU setting for NETGEAR equipment is often just the default value, and changing the value might fix one problem but cause another. WARNING: An incorrect MTU setting can cause Internet communication problems such as the inability to access certain websites, frames within websites, secure login pages, or FTP or POP servers. Leave the MTU unchanged unless one of these situations occurs: • You have problems connecting to your ISP or other Internet service, and technical support of either the ISP or NETGEAR recommends changing the MTU setting. These web-based applications might require an MTU change: - A secure website that does not open, or displays only part of a web page - Yahoo email - MSN portal - America Online's DSL service • You use VPN and have severe performance problems. • You used a program to optimize MTU for performance reasons, and now you have connectivity or performance problems. If you suspect an MTU problem, a common solution is to change the MTU to 1400. If you are willing to experiment, you can gradually reduce the MTU from the maximum value of 1500 until the problem goes away. genie ADVANCED Home 49

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genie ADVANCED Home
49
N450 Wireless Router WNR2500
To set up a default DMZ server:
1.
Select
ADVANCED > Setup > WAN Setup
.
The WAN Setup screen displays.
2.
Select the
Default DMZ Server
check box.
3.
Type the IP address.
4.
Click the
Apply
button.
Change the MTU Size
The maximum transmission unit (MTU) is the largest data packet a network device transmits.
When one network device communicates across the Internet with another, the data packets
travel through many devices along the way. If any device in the data path has a lower MTU
setting than the other devices, the data packets must be split or fragmented to accommodate
the device with the smallest MTU.
The best MTU setting for NETGEAR equipment is often just the default value, and changing
the value might fix one problem but cause another.
WARNING:
An incorrect MTU setting can cause Internet communication
problems such as the inability to access certain websites, frames
within websites, secure login pages, or FTP or POP servers.
Leave the MTU unchanged unless one of these situations occurs:
•
You have problems connecting to your ISP or other Internet service, and technical
support of either the ISP or NETGEAR recommends changing the MTU setting. These
web-based applications might require an MTU change:
-
A secure website that does not open, or displays only part of a web page
-
Yahoo email
-
MSN portal
-
America Online’s DSL service
•
You use VPN and have severe performance problems.
•
You used a program to optimize MTU for performance reasons, and now you have
connectivity or performance problems.
If you suspect an MTU problem, a common solution is to change the MTU to 1400. If you are
willing to experiment, you can gradually reduce the MTU from the maximum value of 1500
until the problem goes away.