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 2. Common MTU sizes
Application
MTU
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
To change the MTU size:
1. Launch a web browser from a computer or mobile device that is connected to the
router network.
2. Enter http://www.routerlogin.net.
A login window opens.
3. Enter the router admin user name and password.
The user name is admin. The password is the one that you specified the first time
that you logged in. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select ADVANCED > Setup > WAN Setup.
The WAN Setup page displays.
5. In the MTU Size field, enter a value from 616 to 1500.
6. Click the Apply button.
Your settings are saved.
User Manual
40
Specify Your Internet Settings
4-Stream AX1800 WiFi 6 Router Model RAX20