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System Administration 81
3. If required, select Group Bandwidth Policies . Bandwidth Management must be enabled before you
can enable and specify Group Bandwidth Policies.
Note: The Bandwidth Management page only globally Enables and Disables Bandwidth Management and
Group Bandwidth Policies. Bandwidth settings themselves are set for each WAN interface in Ethernet
Ports/WAN.
4.
If desired, click the check box to enable
Weighted Fair Queuing
. See Weighted Fair Queueing on
page 22.
5.
With
Weighted Fair Queuing
enabled, you have the option to
Share Unused Bandwidth
. If checked,
unused bandwidth, if available, is distributed among users in proportion to the users’ bandwidth caps. If
unchecked, users are held to their bandwidth cap limits.
6.
If required, specify
Default Valid Subscriber Bandwidth
; Up and/or Down. These options specify the
default maximum up and down bandwidths for any subscribers that do not have a specified bandwidth
setting. A value of ‘0’ means that no limit will be applied.
7.
Click on the
Save
button to save your changes, or click the
Restore
button to reset all the values to their
previous state.
Group Bandwidth Limit Policy
The Group Bandwidth Limit Policy allows the you to assign a common bandwidth rate limiting policy to a
group of subscriber devices. All devices within the group share the total bandwidth allocated to the policy.
The Group Bandwidth Limit Policy feature defines the following vendor-specific attributes (VSAs):
Nomadix
VSA #
Name Role/Value
19 GROUP_BW_POLICY_ID Defines the ID the for the group policy. Integer between 1 and
16777215, inclusive.
20 GROUP_BW_MAX_UP Defines the total upstream bandwidth allowed for the group in
Kilobits per second. Integer value. 0 is interpreted as unlimited.
21 GROUP_BW_MAX_DOWN Defines the total downstream bandwidth allowed for the group in
Kilobits per second. Integer value. 0 is interpreted as unlimited.
Group Bandwidth Limit Policy – Operation
The NSE maintains a collection of all installed group bandwidth policies. The collection is indexed by the
bandwidth policy ID provided by the RADIUS server. The collection can store as many policy records as the
number of licensed subscriber devices. All subscriber devices sharing the same group bandwidth policy ID
belong to the same group. A subscriber device can participate in only one bandwidth-limiting group at a time.
When a login is performed to an account that returns a bandwidth policy ID that does not yet exist in the NSE,
a new policy record is created and inserted into the aforementioned collection. The subscriber authorized by
the Access-Accept is associated with the newly installed bandwidth policy ID, and the bandwidth limits
returned are invoked.
When the Access-Accept for a subscriber contains a bandwidth policy ID already present on NSE, the
subscriber is associated with the existing group policy. All subscribers that are now members of the group
share the total bandwidth allocated to the policy.
If at some point a login is performed to an account that returns the policy ID for an existing policy, but also
returns bandwidth values different than those currently allocated for that policy, the policy will be updated
with the new values found in the Access-Accept. Thus, the latest Access-Accept determines the current rates
for the entire group.