ZyXEL Communications VMG8825-B Series, Руководство пользователя, Страница: 158 / 360

Chapter 10 Quality of Service (QoS)
VMG8825-B Series User’s Guide
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DHCP This field is available only when you select IP in the Ether Type field.
Select this option and select a DHCP option.
If you select Vendor Class ID (DHCP Option 60) , enter the Vendor Class Identifier (Option 60) of
the matched traffic, such as the type of the hardware or firmware.
If you select Client ID (DHCP Option 61) , enter the Identity Association IDentifier (IAD Option 61)
of the matched traffic, such as the MAC address of the device.
If you select User Class ID (DHCP Option 77) , enter a string that identifies the user’s category or
application type in the matched DHCP packets.
If you select Vendor Specific Info (DHCP Option 125) , enter the vendor specific information of
the matched traffic, such as the product class, model name, and serial number of the device.
IP Packet
Length
This field is available only when you select IP in the Ether Type field.
Select this option and enter the minimum and maximum packet length (from 46 to 1500) in the
fields provided.
DSCP This field is available only when you select IP in the Ether Type field.
Select this option and specify a DSCP (DiffServ Code Point) number between 0 and 63 in the
field provided.
802.1P This field is available only when you select 802.1Q in the Ether Type field.
Select this option and 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.
VLAN ID This field is available only when you select 802.1Q in the Ether Type field.
Select this option and specify a VLAN ID number.
TCP ACK This field is available only when you select IP in the Ether Type field.
If you select this option, the matched TCP packets must contain the ACK (Acknowledge) flag.
Exclude Select this option to exclude the packets that match the specified criteria from this classifier.
Step3: Packet Modification
DSCP Mark This field is available only when you select IP in the Ether Type field.
If you select Remark , enter a DSCP value with which the VMG replaces the DSCP field in the
packets.
If you select Unchange , the VMG keep the DSCP field in the packets.
VLAN ID If you select Remark , enter a VLAN ID number with which the VMG replaces the VLAN ID of the
frames.
If you select Remove , the VMG deletes the VLAN ID of the frames before forwarding them out.
If you select Add , the VMG treat all matched traffic untagged and add a second VLAN ID.
If you select Unchange , the VMG keep the VLAN ID in the packets.
802.1P Mark Select a priority level with which the VMG replaces the IEEE 802.1p priority field in the packets.
If you select Unchange , the VMG keep the 802.1p priority field in the packets.
Step4: Class Routing
Forward to
Interface Select a WAN interface through which traffic of this class will be forwarded out. If you select
Unchange , the VMG forward traffic of this class according to the default routing table.
Step5: Outgoing Queue Selection
To Queue Index Select a queue that applies to this class.
You should have configured a queue in the Queue Setup screen already.
Table 50 Classification Setup: Add/Edit (continued)
LABEL DESCRIPTION