Netgear RANGEMAX WNDR3300 User Manual Page 88

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NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
5-20 Fine-Tuning Your Network
v1.0, February 2008
Click Delete to remove the QoS policy.
Click Edit to edit the QoS policy. Follow the instructions in the preceding sections to
change the policy settings.
3. Click Apply in the QoS Setup screen to save your changes.
Changing the MTU
The Maximum Transmission Unit (MTU) is the largest data packet a network device transmits.
When one network device communicates across the Internet with another, the data packets travel
through many devices along the way. If any device in the data path has a lower MTU setting than
the other devices, the data packets must be split or “fragmented” to accommodate the one with the
smallest MTU.
The best MTU setting for NETGEAR equipment is often just the default value, and changing the
value might fix one problem but cause another. Leave MTU unchanged unless one of these
situations occurs:
You have problems connecting to your ISP or other Internet service, and the technical support
of either the ISP or NETGEAR recommends changing the MTU setting. These might require
an MTU change:
A secure Web site that won’t open, or displays only part of a Web page
–Yahoo e-mail
–MSN
America Online’s DSL service
You use VPN and have severe performance problems.
You used a program to optimize MTU for performance reasons, and now you have
connectivity or performance problems.
Note: An incorrect MTU setting can cause Internet communication problems such as the
inability to access certain Web sites, frames within Web sites, secure login pages,
or FTP or POP servers.
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