Technical Reference - ZyXEL Communications FMG Series User Manual

Table 13 QoS Classification: Add/Modify
LABEL
IP QoS Rule by type: Port
Physical Port
VLAN ID (1-4094) Enter the source VLAN ID in this field.
802.1p range
DSCP range (0 -
63)
Assign IP Precedence/VLAN/802.1p
Destination Port
Precedence
VLAN ID (1-4096) Enter the target VLAN ID in this field.
802.1p
Apply Changes

5.5 Technical Reference

The following section contains additional technical information about the FMG features described in this
chapter.
IEEE 802.1Q Tag
The IEEE 802.1Q standard defines an explicit VLAN tag in the MAC header to identify the VLAN
membership of a frame across bridges. A VLAN tag includes the 12-bit VLAN ID and 3-bit user priority.
The VLAN ID associates a frame with a specific VLAN and provides the information that devices need to
process the frame across the network.
IEEE 802.1p specifies the user priority field and defines up to eight separate traffic types. The following
table describes the traffic types defined in the IEEE 802.1d standard (which incorporates the 802.1p).
Table 14 IEEE 802.1p Priority Level and Traffic Type
PRIORITY LEVEL
Level 7
Level 6
Level 5
Level 4
Level 3
Level 2
Chapter 5 Advance
DESCRIPTION
If you want to classify the traffic by an ingress interface, select an interface from the drop-down
list box.
Select a priority level (between 0 and 7) from the drop-down list box. "0" is the lowest priority level
and "7" is the highest.
Enter a DSCP (DiffServ Code Point) number between 0 and 63 in the field provided.
If you want to classify the traffic by an engress interface, select an interface from the drop-down
list box.
Enter a range from Queue1 to 8 to re-assign IP precedence to matched traffic. 1 is the lowest
Mark priority and 8 is the highest.
IEEE 802.1p specifies the user priority field and defines up to eight separate traffic types
(between 0 and 7).
Click Apply Changes to save your changes.
TRAFFIC TYPE
Typically used for network control traffic such as router configuration messages.
Typically used for voice traffic that is especially sensitive to jitter (jitter is the variations in delay).
Typically used for video that consumes high bandwidth and is sensitive to jitter.
Typically used for controlled load, latency-sensitive traffic such as SNA (Systems Network
Architecture) transactions.
Typically used for "excellent effort" or better than best effort and would include important
business traffic that can tolerate some delay.
This is for "spare bandwidth".
FMG Series User's Guide
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