Specify Network Settings
48
AC1200 WiFi Cable Modem Router Model C6220
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 ADV
ANCED > 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 2. 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 use large email attachments, for example.
1436 Used in PPTP environments or with VPN.
1400 Maximum size for AOL DSL.
576 Typical value to connect to dial-up ISPs.
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