Netgear C7800 User Manual - Page 25

To change the MTU size, admin, password, ADVANCED > Setup > WAN Setup, MTU Size, Apply, Table 3.

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Page 25 highlights

AC3200 WiFi Cable Modem Router  To change the MTU size: 1. Launch a web browser from a computer or mobile device that is connected to the modem router network. 2. Enter http://routerlogin.net or http://192.168.0.1. A login window opens. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home page displays. 4. Select ADVANCED > Setup > WAN Setup. 5. In the MTU Size field, enter a value from 64 to 1500. 6. Click the Apply button. Your settings are saved. 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 MTU 1500 1492 1472 1468 1460 Application 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. Used in PPPoE environments. Maximum size to use for pinging. (Larger packets are fragmented.) Used in some DHCP environments. Usable by AOL if you do not send or receive large email attachments, for example. Specify Your Internet Settings 25

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Specify Your Internet Settings
25
AC3200
WiFi
Cable
Modem
Router
To change the MTU size:
1.
Launch a web browser from a computer or mobile device that is connected to the
modem router network.
2.
Enter
http://routerlogin.net
or
.
A login window opens.
3.
Enter the modem router user name and password.
The user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
The BASIC Home page displays.
4.
Select
ADVANCED > Setup > WAN Setup
.
5.
In the
MTU Size
field, enter a value from 64 to 1500.
6.
Click the
Apply
button.
Your settings are saved.
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
MTU
Application
1500
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.
1492
Used in PPPoE environments.
1472
Maximum size to use for pinging. (Larger packets are fragmented.)
1468
Used in some DHCP environments.
1460
Usable by AOL if you do not send or receive large email attachments, for example.