Leave the MTU unchanged unless one of these situations occurs:
• You experience problems connecting to your ISP or other Internet service, and the 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
• You use VPN and experience severe performance problems.
• You used a program to optimize MTU for performance reasons and now you are experiencing 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.The following table describes common MTU sizes and applications.
Table 3. Common MTU sizes
ApplicationMTU
The largest Ethernet packet size.This setting is typical for connections
that do not use PPPoE or VPN and is the default value for NETGEAR
routers, adapters, and switches.
1500
Used in PPPoE environments.1492
Maximum size to use for pinging. (Larger packets are fragmented.)1472
Used in some DHCP environments.1468
Used in PPPoA environments.1458
Used in PPTP environments or with VPN.1436
Change the MTU Size
WARNING:
An incorrect MTU setting can cause Internet communication problems. For
example, you might not be able to access certain websites, frames within
websites, secure login pages, or FTP or POP servers. Change the MTU only
if you are sure that it is necessary for your ISP connection.
To change the MTU size:
1. Launch a web browser from a computer or mobile device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
Specify Your Internet Settings
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