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NBG6515 User’s Guide
136
C
HAPTER
21
Bandwidth Management
21.1
Overview
This chapter contains information about configuring bandwidth management and editing rules.
ZyXEL’s Bandwidth Management allows you to specify bandwidth management rules based on an
application.
In the figure below, uplink traffic goes from the LAN device (
A
) to the WAN device (
B
). Bandwidth
management is applied before sending the packets out to the WAN. Downlink traffic comes back
from the WAN device (
B
)
to the LAN device (
A
). Bandwidth management is applied before sending
the traffic out to LAN.
Figure 102
Bandwidth Management Example
You can allocate specific amounts of bandwidth capacity (bandwidth budgets) to individual
applications (like VoIP, Web, FTP, and E-mail for example).
21.2
What You Can Do
•
Use the
General
screen (
Section 21.4 on page 137
) to enable bandwidth management and
assign bandwidth values.
•
Use the
Advanced
screen (
Section 21.5 on page 137
) to configure bandwidth managements rule
for the pre-defined services and applications.
A
B
-> VOIP
-> FTP
-> HTTP
-> Chat, Email
Page 137 / 249
Chapter 21 Bandwidth Management
NBG6515 User’s Guide
137
21.3
What You Need To Know
The sum of the bandwidth allotments that apply to the WAN interface (LAN to WAN, WLAN to WAN)
must be less than or equal to the
Upstream Bandwidth
that you configure in the
Bandwidth
Management
Advanced
screen (
Section 21.5 on page 137
).
The sum of the bandwidth allotments that apply to the LAN interface (WAN to LAN, WAN to WLAN)
must be less than or equal to the
Downstream Bandwidth
that you configure in the
Bandwidth
Management
Advanced
screen
Section 21.5 on page 137
.
21.4
General Screen
Use this screen to have the NBG apply bandwidth management.
Click
Management
> Bandwidth Management
to open the bandwidth management
General
screen.
Figure 103
Management > Bandwidth Management > General
The following table describes the labels in this screen.
21.5
Advanced Screen
Use this screen to configure bandwidth management rules for the pre-defined services or
applications.
You can also use this screen to configure bandwidth management rule for other services or
applications that are not on the pre-defined list of NBG. Additionally, you can define the source and
destination IP addresses and port for a service or application.
Table 68
Management > Bandwidth Management > General
LABEL
DESCRIPTION
Enable
Bandwidth
Management
This field allows you to have NBG apply bandwidth management.
Enable bandwidth management to give traffic that matches a bandwidth rule priority over
traffic that does not match a bandwidth rule.
Enabling bandwidth management also allows you to control the maximum or minimum
amounts of bandwidth that can be used by traffic that matches a bandwidth rule.
Apply
Click
Apply
to save your customized settings.
Reset
Click
Reset
to begin configuring this screen afresh.
Page 138 / 249
Chapter 21 Bandwidth Management
NBG6515 User’s Guide
138
Note: The two tables shown in this screen can be configured and applied at the same
time.
Click
Management
>
Bandwidth Management
>
Advanced
to open the bandwidth
management
Advanced
screen.
Figure 104
Management > Bandwidth Management > Advanced
The following table describes the labels in this screen.
Table 69
Management > Bandwidth Management > Advanced
LABEL
DESCRIPTION
Management Bandwidth
Upstream
Bandwidth
Select the total amount of bandwidth (from 64 Kilobits to 50 Megabits) that you want to
dedicate to uplink traffic. If you select
User Defined
, type the total amount of bandwidth
that you want to dedicate to uplink (or outgoing) traffic in the (kbps) text box.
This is traffic from LAN/WLAN to WAN.
Page 139 / 249
Chapter 21 Bandwidth Management
NBG6515 User’s Guide
139
21.5.1
Rule Configuration: Application Rule Configuration
If you want to edit a bandwidth management rule for a pre-defined service or application, click the
Edit
icon in the
Application List
table of the
Advanced
screen. The following screen displays.
Downstream
Bandwidth
Select the total amount of bandwidth (from 64 Kilobits to 50 Megabits) that you want to
dedicate to uplink traffic. If you select
User Defined
, type the total amount of bandwidth
that you want to dedicate to downlink (or incoming) traffic in the (kbps) text box.
This is traffic from WAN to LAN/WLAN.
Application List
Use this table to allocate specific amounts of bandwidth based on a pre-defined service.
#
This is the number of an individual bandwidth management rule.
Priority
Select a priority from the drop down list box. Choose
High
,
Mid
or
Low
.
•
High
- Select this for voice traffic or video that is especially sensitive to jitter (jitter is
the variations in delay).
•
Mid
- Select this for "excellent effort" or better than best effort and would include
important business traffic that can tolerate some delay.
•
Low
- Select this for non-critical "background" traffic such as bulk transfers that are
allowed but that should not affect other applications and users.
Category
This is the category where a service belongs.
Service
This is the name of the service.
Select the check box to have the NBG apply this bandwidth management rule.
Advanced
Setting
Click the
Edit
icon to open the
Rule Configuration
screen where you can modify the rule.
User-defined
Service
Use this table to allocate specific amounts of bandwidth to specific applications or services
you specify.
#
This is the number of an individual bandwidth management rule.
Enable
Select this check box to have the NBG apply this bandwidth management rule.
Direction
Select
TO
LAN/WLAN
to apply bandwidth management to traffic from WAN to LAN/WLAN.
Select
TO WAN
to apply bandwidth management to traffic from LAN/WLAN to WAN.
Service Name
Enter a descriptive name for the bandwidth management rule.
Category
This is the category where a service belongs.
Modify
Click the
Edit
icon to open the
Rule Configuration
screen. Modify an existing rule or
create a new rule in the
Rule Configuration
screen. See
Section 21.5.2 on page 140
for
more information.
Click the
Remove
icon to delete a rule.
Apply
Click
Apply
to save your customized settings.
Reset
Click
Reset
to begin configuring this screen afresh.
Table 69
Management > Bandwidth Management > Advanced
(continued)
LABEL
DESCRIPTION
Page 140 / 249
Chapter 21 Bandwidth Management
NBG6515 User’s Guide
140
Figure 105
Bandwidth Management Rule Configuration: Application List
The following table describes the labels in this screen.
21.5.2
Rule Configuration: User Defined Service Rule Configuration
If you want to edit a bandwidth management rule for other applications or services, click the
Edit
icon in the
User-defined Service
table of the
Advanced
screen. The following screen displays.
Figure 106
Bandwidth Management Rule Configuration: User-defined Service
Table 70
Bandwidth Management Rule Configuration: Application List
LABEL
DESCRIPTION
#
This is the number of an individual bandwidth management rule.
Enable
Select an interface’s check box to enable bandwidth management on that interface.
Direction
These read-only labels represent the physical interfaces. Bandwidth management applies to
all traffic flowing out of the router through the interface, regardless of the traffic’s source.
Traffic redirect or IP alias may cause LAN-to-LAN traffic to pass through the NBG and be
managed by bandwidth management.
Bandwidth
Select
Maximum Bandwidth
or
Minimum Bandwidth
and specify the maximum or
minimum bandwidth allowed for the rule in kilobits per second.
Protocol
This is the protocol (
TCP
,
UDP
or user-defined) used for the service.
OK
Click
OK
to save your customized settings.
Cancel
Click
Cancel
to exit this screen without saving.

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