High Power
Wireless AC1200 Dual Band Router
27
technical support of either your ISP or Tenda suggests changing the MTU value.
Below web-based applications might require an MTU change:
A secure website that does not open, or displays only part of a web
page
Yahoo email
MSN portal
B.
You use VPN and encounter serious performance problem s.
C.
You used a program to optimize MTU for performance reasons, and now you
have connectivity or performance problems.
I f yo u su sp ect an M TU p r ob l em, t r y ch an gi n g t h e M TU to 1 400 . I f t h i s do es n o t h el p, gr adu al l y
r ed u ce th e M TU fr o m t h e maxi mu m v al u e o f 15 00
until the problem disappears.
The common MTU sizes and applications are listed in the table below.
MTU
Application
1500
Typical for connections that do not use PPPoE or
VPN.
1492
Used in PPPoE environments.
1472
Maximum size to use for pinging. (La rger packets
are fragmented.)
1468
Used in some DHCP environments.
1436
Used in PPTP environments or with VPN.
Note
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A wr on g/ i mp ro p er M TU val u e ma y cau se I n t ern et co mm u n i cat io n pr ob l ems . F o r e xa mp l e, yo u
ma y b e u n ab l e to acces s cer t ain web s i t es, fr a mes wi t hi n web s i t es , s ecu r e l o gin p a ges, o r F TP
or P OP ser ver s .
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