NETGEAR Orbi RBK753 User Manual page 38

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 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 5. 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.
1436 Used in PPTP environments or with VPN.
576 Typical value to connect to dial-up ISPs.
Specify Your Internet Settings
Orbi Whole Home Tri-Band Mesh WiFi 6 System
38 User Manual