NETGEAR WNR500, Руководство пользователя

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N-150 2-Port Wireless Router WNR500 User Manual
Fine-Tuning Your Network 5-16
v1.0, November 2011
If you suspect an MTU problem, a common solution is to change the MTU size to 1400. If you are
willing to experiment, you can gradually reduce the MTU size from the maximum value of 1500
until the problem goes away.
Table 5-1 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
Quality of Service (QoS) is an advanced feature that can be used to prioritize some types of traffic
ahead of others. The WNR500 router can provide QoS prioritization over the wireless link and on
the Internet connection.
Using WMM QoS for Wireless Multimedia Applications
The WNR500 router supports Wi-Fi Multimedia Quality of Service (WMM QoS) to prioritize
wireless voice and video traffic over the wireless link. WMM QoS provides prioritization of
wireless data packets from different applications based on four access categories: voice, video,
best effort, and background. For an application to receive the benefits of WMM QoS, both it and
Table 5-1. 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 do not 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.