NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
5-20 Fine-Tuning Your Network
v2.1, July 2007
1. Open the QoS Setup menu, shown in Figure 5-6 on page 5-15.
2. Select the radio button next to the QoS policy to be edited or deleted.
3. Click Delete to remove the QoS policy.
4. Click Edit to edit the QoS policy. Follow the instructions in the preceding sections to change
the policy settings.
5. Click Apply in the QoS Setup menu 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
The best MTU setting for NETGEAR equipment is often just the default value, and changing the
value may fix one problem but cause another. Leave MTU unchanged unless:
• You have problems connecting to your ISP, or other Internet service, and either the technical
support of the ISP or of NETGEAR recommends changing MTU. These may require an MTU
– A secure Web site that won't open, or only displays part of a Web page
– Yahoo email
– 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,
FTP or POP servers.