Linksys AG300 manual QoS Tab, PVC QoS Priority, Edit list of QoS Settings

ADSL Gateway

The QoS Tab

QoS

Quality of Service (QoS) ensures better service to high-priority types of network traffic, which may involve demanding, real-time applications, such as Internet phone calls or videoconferencing.

Enabled/Disabled. To use QoS, select Enabled. Otherwise, keep the default, Disabled.

PVC QoS Priority

PVC-based QoS assigns different levels of priority, or precedence, to different permanent virtual circuits. This is useful when you have, for example, one PVC set up for traditional Internet services (Web browsing, e-mail, and the like) and another PVC set up to carry time-sensitive data such as VoIP or IPTV streams. Giving the second PVC a higher QoS level helps ensure the best possible voice or picture quality.

Edit list of QoS Settings

In addition to PVC-based QoS, you can assign different levels of priority to different packets based on information in the packets. To do this, click the Edit list of QoS Settings button. A window titled QoS Function will appear.

This window lets you set the priority for packets selected by any of the following criteria, alone or in combination:

•Destination. IP address and Netmask (address mask), FQDM (Fully Qualified Domain Name), or MAC address.

•Source. IP address and Netmask (address mask), or MAC address

•Protocol (Transport). TCP, UDP, or All.

•Dst Port/Scr Port (Destination port and/or source port). If protocol is set to TCP or UDP.

•Ethernet Type. The value in the 13th and 14th octets of an Ethernet frame.

•ALG. Triggering of a particular Application Layer Gateway (FTP, TFTP, H.323, IRC, MMS, GRE, PPTP, or SIP).

•802.1D User Priority. Presence of a specified IEEE 802.1D user priority marker.

•802.1Q VID. Presence of a specified IEEE 802.1Q virtual LAN (VLAN) ID.

•Packet length Min/Max. Packet length between specified minimum and maximum numbers of octets.

•Priority. Set the priority of None, Low, Medium, or High.

Chapter 5: Configuring the ADSL Gateway

Figure 5-31: QoS

Figure 5-32: Edit List of QoS Settings

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The Applications & Gaming Tab