Wan Speed (Available Only In Wireless Router Mode) - Tenda 4G600 User Manual

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B. You use VPN and encounter serious performance problems.
C. You used a program to optimize MTU for performance reasons, and now you
have connectivity or performance problems.
If you suspect an MTU problem, try changing the MTU to 1400. If this does not
help, gradually reduce the MTU from the maximum value of 1500 until the
problem disappears.
The common MTU sizes and applications are listed in the table below.
MTU
1500
1492
1472
1468
1436
Note
A wrong/improper MTU value may cause Internet communication problems. For
example, you may be unable to access certain Websites, frames within
Websites, secure login pages, FTP or POP servers.

2.3 WAN Speed (Available only in Wireless Router Mode)

Click Basic -> WAN Speed to enter the configuration interface. Here you can
configure the WAN speed and duplex mode.
III Features & Configurations | Tenda
32
Typical for connections that do not use PPPoE or VPN.
Used in PPPoE environments.
Maximum size to use for pinging. (Larger packets are
fragmented.)
Used in some DHCP environments.
Used in PPTP environments or with VPN.
Application