ZyXEL Communications EMG6765-Q10A, Руководство пользователя

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Chapter 21 Bandwidth Management
EMG6765-Q10A User’s Guide
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21.6 Technical Reference
The following section contains additional technical information about the EMG6765-Q10A 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.
Others
IP Protocol This field is available only when you select IP in the Ether Type field.
Select this option and select the protocol (service type) from TCP , UDP , ICMP or IGMP . If you
select User defined , enter the protocol (service type) number.
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.
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.
Step 3: Packet modification
DSCP Mark This field is available only when you select IP in the Ether Type field.
If you select Mark , enter a DSCP value with which the EMG6765-Q10A replaces the DSCP field in
the packets.
If you select Unchange , the EMG6765-Q10A keep the DSCP field in the packets.
Step 4: 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.
Back Click this to return to the previous screen.
Apply Click this to save your changes.
Cancel Click this to exit this screen without saving.
Table 66 Management > Bandwidth MGMT > Class Setup: Add/Edit new class
LABEL DESCRIPTION