ZyXEL Communications Prestige 662HW Series, Руководство пользователя

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Prestige 662HW Series User’s Guide
20-10 Media Bandwidth Management
Table 20-4 Media Bandwidth Management: Class Configuration
LABEL DESCRIPTION
Class Name Use the auto-generated name or enter a descriptive name of up to 20 alphanumeric
characters, including spaces.
BW Budget (kbps) Specify the maximum bandwidth allowed for the class in kbps. The recommendation is
a setting between 20 kbps and 20000 kbps for an individual class.
Priority Enter a number between 0 and 7 to set the priority of this class. The higher the
number, the higher the priority. The default setting is 3.
Borrow bandwidth
from parent class Select this option to allow a child-class to borrow bandwidth from its parent class if the
parent class is not using up its bandwidth budget.
Bandwidth borrowing is governed by the priority of the child-classes. That is, a child-
class with the highest priority (7) is the first to borrow bandwidth from its parent class.
Do not select this for the classes directly below the root class if you want to leave
bandwidth available for other traffic types (see
section 20.6.1 ) or you want to set the
interface’s speed to match what the next device in network can handle (see the Speed
field description in Table 20-2 ).
Bandwidth Filter
The Prestige uses a bandwidth filter to identify the traffic that belongs to a bandwidth class.
Active Select the check box to have the Prestige use this bandwidth filter when it performs
bandwidth management.
Service You can select a predefined service instead of configuring the Destination Port ,
Source Port and Protocol ID fields.
SIP (Session Initiation Protocol) is a signaling protocol used in Internet telephony,
instant messaging and other VoIP (Voice over IP) applications. Select
SIP from the
drop-down list box to configure this bandwidth filter for traffic that uses SIP. At the time
of writing, SIP was the only predefined service.
When you select None , the bandwidth class applies to all services unless you specify
one by configuring the Destination Port , Source Port and Protocol ID fields.
Destination IP
Address Enter the destination IP address in dotted decimal notation. A blank destination IP
address means any destination IP address.
Destination Subnet
Mask Enter the destination subnet mask. This field is N/A if you do not specify a Destination
IP Address . Refer to the appendix for more information on IP subnetting.
Destination Port Enter the port number of the destination. A blank destination port means any
destination port.
Source IP Address Enter the source IP address. A blank source IP address means any source IP address.
Source Subnet Mask Enter the source subnet mask. This field is N/A if you do not specify a
Source IP
Address . Refer to the appendix for more information on IP subnetting.
Source Port Enter the port number of the source. See the following table for some common
services and port numbers. A blank source port means any source port number.
Protocol ID Enter the protocol ID (service type) number, for example: 1 for ICMP, 6 for TCP or 17
for UDP. A blank protocol ID means any protocol number.
Back Click Back to go to the main Media Bandwidth Management screen.
Apply Click Apply to save your changes back to the Prestige.
Cancel
Click Cancel to begin configuring this screen afresh.