Netgear WNDR3700-100NAS 사용자 설명서

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RangeMax™ Dual Band Wireless-N Gigabit Router WNDR3700 User Manual 
Fine-Tuning Your Network
6-7
v1.3, October 2009
You used a program to optimize MTU for performance reasons, and now you have 
connectivity or performance problems.
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. 
Table 6-2
 describes common MTU sizes and applications.  
To change the MTU size:
1. In the main menu, under Advanced, select WAN Setup. 
2. In the MTU Size field, enter a new size between 64 and 1500.
3. Click Apply to save the new configuration.
Quality of Service (QoS)
QoS is an advanced feature that can be used to prioritize some types of traffic ahead of others. The 
WNDR3700 router can provide QoS prioritization over the wireless link and on the Internet 
connection. To configure QoS, use the QoS Setup screen. 
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.
Table 6-2.  Common MTU Sizes
MTU
Application
1500
The largest Ethernet packet size and the default value. This is the typical setting for non-
PPPoE, non-VPN connections, 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.
1460
Usable by AOL if you don't have large e-mail attachments, for example.
1436
Used in PPTP environments or with VPN.
1400
Maximum size for AOL DSL.
576
Typical value to connect to dial-up ISPs.