Chapter 11 Quality of Service (QoS)

these two classes are assigned priority queue based on the internal QoS mapping table on the P-660RU-Tx.

Figure 40 QoS Example

VoIP: Queue 6

DSL

50 Mbps

Boss: Queue 5

IP=192.168.1.23

11.1.1What You Can Do in the QoS Screens

•Use the QoS screen (Section 11.2 on page 103) to configure QoS settings on the P-660RU-Tx.

•Use the QoS Settings Summary screen (Section 11.2.1 on page 105) to check the summary of QoS rules and actions you configured for the P-660RU-Tx.

11.1.2What You Need to Know About QoS

802.1p

QoS is used to prioritize source-to-destination traffic flows. All packets in the same flow are given the same priority. 802.1p is a way of managing traffic in a network by grouping similar types of traffic together and treating each type as a class. You can use 802.1p to give different priorities to different packet types.

Tagging and Marking

In a QoS class, you can configure whether to add or change the DiffServ Code Point (DSCP) value, IEEE 802.1p priority level and VLAN ID number in a matched packet. When the packet passes through a compatible network, the networking device, such as a backbone switch, can provide specific treatment or service based on the tag or marker.

Finding Out More

See Section 11.3 on page 106 for advanced technical information on QoS.

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P-660RU-Tx User’s Guide