Bandwidth is the amount of data passing through a media over a period of time and is measured in terms of kilobytes per second (kbps) or kilobits per second (kbits) (1 Byte = 8 bits).
The primary objective of bandwidth policy is to manage and distribute total bandwidth on certain parameters and user attributes. Bandwidth policy allocates & limits the maximum bandwidth usage of the user and controls web and network traffic.
Policy can be defined/created for:
1. Logon Pool
It restricts the bandwidth of a Logon Pool i.e. all the users defined under the Logon Pool share the allocated bandwidth.
2. User
It restricts the bandwidth of a particular user.
3. Firewall Rule
It restricts the bandwidth of any entity to which the firewall rule is applied.
Logon Pool based bandwidth policy
Policy restricts the bandwidth for a Logon Pool i.e. all the users defined under the Logon Pool will share the allocated bandwidth.
User based bandwidth policy
Policy restricts the bandwidth for a particular user. There are two types of bandwidth restriction
• Strict
• Committed Strict
In this type of bandwidth restriction, user cannot exceed the defined bandwidth limit. Two ways to implement strict policy:
• Total (Upstream + Downstream)
• Individual Upstream and Individual Downstream
Implementation on Bandwidth specified Example Total
(Upstream + Downstream)
Total bandwidth Total bandwidth is 20 kbps and upstream and downstream combined cannot cross 20 kbps
Individual Upstream bandwidth is 20 kbps then either cannot cross 20 kbps
Table - Implementation types for Strict - Bandwidth policy
Strict policy – Bandwidth usage
Bandwidth usage Bandwidth specified Individual For a particular user
Shared Shared among all the users who have been assigned this policy Table - Bandwidth usage for Strict - Bandwidth policy
Committed
In this type of bandwidth restriction, user is allocated the guaranteed amount of bandwidth and user can draw bandwidth up to the defined burstable limit, if available.
It enables to assign fixed minimum and maximum amounts of bandwidth to users. By borrowing excess bandwidth when it is available, users are able to burst above guaranteed minimum limits, up to the burst-able rate. Guaranteed rates also assure minimum bandwidth to critical users to receive constant levels of bandwidth during peak and non-peak traffic periods.
Guaranteed represents the minimum guaranteed bandwidth and burstable represents the maximum bandwidth that a user can use, if available.
Two ways to implement committed policy:
• Total (Upstream + Downstream)
• Individual Upstream and Individual Downstream
Implementation on Bandwidth specified Example Total
(Upstream + Downstream)
Guaranteed bandwidth
Burstable bandwidth
Guaranteed bandwidth is 20 kbps then upstream and downstream combined will get 20 kbps guaranteed (minimum) bandwidth
Burstable bandwidth is 50 kbps then upstream and downstream combined can get up to 50 kbps of bandwidth (maximum), if available
Individual guaranteed bandwidth is 20 kbps then upstream and downstream get 20 kbps guaranteed (minimum) bandwidth individually
Individual brustable bandwidth is 50 kbps then upstream and downstream get maximum bandwidth up to 50 kbps, if available individually
Table - Implementation types for Committed - Bandwidth policy
Committed policy – Bandwidth usage
Bandwidth usage Bandwidth specified Individual For a particular user
Shared Shared among all the users who have been assigned this policy Table - Bandwidth usage for Committed - Bandwidth policy
Firewall Rule based bandwidth policy
Policy restricts the bandwidth for a particular IP address. It is similar to the User based policy with the same type of restrictions on Implementation type & Bandwidth usage.
Create Bandwidth policy
Select Policies Æ Bandwidth Policy Æ Create policy to open the create policy pane
Screen - Create Bandwidth policy
Common Screen Elements
Screen Elements Description Bandwidth Policy Details
Name Specify policy name. Choose a name that best describes the policy to be created
Description Specify full description of policy Priority Set the bandwidth priority
Priority can be set from 0 (highest) to 7 (lowest)
Set the priority for SSH/Voice/Telnet traffic to be highest as this traffic is more of the interaction
Create button Creates policy
Cancel button Cancels the current operation
Table - Create Bandwidth policy - Common screen elements
Note
Policies with the same name cannot be created
Create Logon Pool based bandwidth policy
Select Policies Æ Bandwidth Policy Æ Create policy to open the create policy page
Screen - Create Logon Pool based Bandwidth policy
Screen Elements Description Bandwidth Policy Details
Policy based on Click Logon Pool to create Logon Pool based policy Total Bandwidth (in KB) Specify maximum amount of total bandwidth, expressed
in terms of kbps.
Specified bandwidth will be shared by all the users of the Logon Pool
Maximum bandwidth limit is 4096 kbps
Table - Create Logon Pool based Bandwidth policy screen elements
Create User/Firewall Rule based Strict bandwidth policy
Screen - Create User/IP based Strict Bandwidth policy
Screen Elements Description Bandwidth Policy Details
Policy based on Based on the selection creates policy for User or IP address Click User to create User based policy
Click IP Address to create IP Address based policy
Policy Type Based on the selection bandwidth restriction will be applied
In Strict type of bandwidth restriction, user cannot exceed the defined bandwidth limit
In Committed type of bandwidth restriction, user is allocated the guaranteed amount of bandwidth and can draw bandwidth up to the defined burst-able limit, if available.
Implementation on Specify implementation type of Bandwidth restriction
Click Total to implement bandwidth restriction on the Total usage
Click Individual to implement bandwidth restriction on the Individual Upstream and Individual Downstream bandwidth usage
Total bandwidth
(Only for ‘TOTAL’
implementation type)
Specify maximum amount of Total bandwidth, expressed in terms of kbps Minimum bandwidth allowed is 2 kbps and maximum is 4096 kbps Upload Bandwidth
(Only for ‘INDIVIDUAL’
implementation type)
Specify maximum amount of Upstream Bandwidth, expressed in terms of kbps
Minimum bandwidth allowed is 2 kbps and maximum is 4096 kbps Download Bandwidth
(Only for ‘INDIVIDUAL’
implementation type)
Specify maximum amount of Downstream Bandwidth, expressed in terms of kbps
Minimum bandwidth allowed is 2 kbps and maximum is 4096 kbps
Bandwidth usage Specify whether the Bandwidth allocated is for particular user or shared among all the policy users
Table - Create User/IP based Strict Bandwidth policy screen elements
Create User/Firewall Rule based Committed bandwidth policy
Screen - Create User/IP based Committed Bandwidth policy
Screen Elements Description Bandwidth Policy Details
Policy based on Creates policy based on the selection Click User to create User based policy
Click IP Address to create IP address based policy
Policy Type Based on the selection bandwidth restriction will be applied
In Strict type of bandwidth restriction, user cannot exceed the defined bandwidth limit
In Committed type of bandwidth restriction, user is allocated the guaranteed amount of bandwidth and can draw bandwidth up to the defined burst-able limit, if available.
Click Committed to apply committed policy
Implementation on Specify implementation type for Bandwidth restriction Click Total to implement bandwidth restriction on Total
Click Individual to implement bandwidth restriction on Individual Upstream and Individual Downstream bandwidth
Guaranteed (Min)/ Burstable (Max)
(Only for ‘TOTAL’
implementation type)
Specify Guaranteed and Burstable amount of Total bandwidth, expressed in terms of kbps
Minimum bandwidth allowed is 2 kbps and maximum is 4096 kbps Guaranteed (Min)/ Burstable
(Max) Upload Bandwidth (Only for ‘INDIVIDUAL’
implementation type)
Specifies Guaranteed and Burstable amount of Upstream Bandwidth, expressed in terms of kbps
Minimum bandwidth allowed is 2 kbps and maximum is 4096 kbps Guaranteed (Min)/ Specifies Guaranteed and Burstable amount of Downstream Bandwidth,
Burstable(Max) Download Bandwidth
(Only for ‘INDIVIDUAL’
implementation type)
expressed in terms of kbps
Minimum bandwidth allowed is 2 kbps and maximum is 4096 kbps Bandwidth usage Specify whether bandwidth specified is for a particular User or Shared
among all the policy users
Table - Create User/IP based Committed Bandwidth policy screen elements
Update Bandwidth policy
Need to update Bandwidth Policy
1. Add/remove schedule based details to User/IP address based policy 2. Update bandwidth values
Select Policies → Bandwidth policy → Manage policy and click Policy name to be updated
Screen - Update Bandwidth policy Common Screen Elements
Screen Elements Description Bandwidth Policy details
Name Displays Bandwidth policy name, modify if required Priority Displays the bandwidth priority, modify if required
Priority can be set from 0 (highest) to 7 (lowest) Set the priority for SSH/Voice/Telnet traffic to be highest as this traffic is more of the interaction
Description Displays policy description, modify if required Update button Updates and saves the policy
Cancel button Cancels current operation and returns to the Manage Bandwidth policy page
Table - Update Bandwidth policy Common screen elements
Update Logon Pool based bandwidth policy
Screen - Update Logon Pool based Bandwidth policy
Screen Elements Description Bandwidth Policy Details
Show Members link Opens a new browser window and displays bandwidth restriction details and the member Logon Pools of the policy
Click Close to close the window Policy Based On Displays type of policy
Cannot be modified Default values to be applied all the time
Implementation on Displays Implementation type of the policy Cannot be modified
Total Bandwidth (in KB) Displays total bandwidth for the group, modify if required Maximum bandwidth limit is 4096 kbps
Table - Update Logon Pool based Bandwidth policy screen elements
Update User/Firewall Rule based Bandwidth policy
Screen - Update User based Bandwidth policy
Screen Elements Description
Bandwidth Policy Details
Show members link Opens a new browser window and displays bandwidth restriction details, schedule details and the members/users of the policy
Click Close to close the window Policy based on Displays type of policy
Cannot be modified Default values to be applied all the time
Implementation on Displays implementation type of policy Cannot be modified
Total Bandwidth
(Only for ‘TOTAL’ implementation type)
Displays total bandwidth assigned, modify if required
Upload Bandwidth (in KB)
(Only for ‘STRICT’ policy type and ‘INDIVIDUAL’ implementation type)
Modify Upstream bandwidth value
Download Bandwidth (in KB)
(Only for ‘STRICT’ policy type and ‘INDIVIDUAL’ implementation type)
Modify Downstream bandwidth value
Guaranteed – Brustable Upload Bandwidth (in KB)
(Only for ‘COMMITTED’ policy
Modify Upstream bandwidth value
type and ‘INDIVIDUAL’
implementation type)
Guaranteed – Brustable Download Bandwidth (in KB)
(Only for ‘COMMITTED’ policy type and ‘INDIVIDUAL’
implementation type)
Modify Downstream bandwidth value
Policy type Displays policy type i.e. committed or strict Cannot be modified
Update button Updates the changes made in ‘Bandwidth restriction details’ and ‘Default values to be applied all the time’
Add details button Allows to attach schedule to override default bandwidth restriction
Click Add details
Refer to Attach Schedule details for more details Table - Update User based Bandwidth policy screen elements Attach Schedule details
Strict
Screen – Assign Schedule to User based Strict Bandwidth policy
Screen Elements Description Bandwidth Policy Schedule wise details
Name Displays policy name
Policy Type Displays Type of bandwidth restriction Click Strict to apply strict policy
Implementation on Specify whether bandwidth restriction implementation is on Total or Upstream & downstream individually
For Total
Total Bandwidth - Specify maximum amount of Total bandwidth, expressed in terms of kbps
For Individual
Upload Bandwidth - Specify maximum amount of Upstream bandwidth, expressed in terms of kbps
Download Bandwidth - Specify maximum amount of Downstream
Schedule Specify Schedule
Click Schedule list to select
View details link Opens the new browser window and displays the details of the schedule selected
Click Close to close the window Add button Assigns schedule
Cancel button Cancels the current operation
Table – Assign Schedule to User based Strict Bandwidth policy screen elements
Committed
Screen - Assign Schedule to User based Committed Bandwidth policy
Screen Elements Description
Bandwidth Policy Schedule wise details Name Displays policy name
Policy Type Displays Type of bandwidth restriction Click Committed to apply committed policy
Implementation on Specify whether bandwidth restriction implementation is on Total or Upstream
& downstream individually For Total
Guaranteed(Min) Bandwidth - Specify minimum guaranteed amount of Total bandwidth, expressed in terms of kbps
Brustable(Max) Bandwidth - Specify maximum amount of Total bandwidth, expressed in terms of kbps
For Individual
Guaranteed(Min) Upload Bandwidth - Specify minimum guaranteed amount of Upstream bandwidth, expressed in terms of kbps
Brustable(Max) Upload Bandwidth - Specify maximum amount of Upstream bandwidth, expressed in terms of kbps
Guaranteed(Min) Download Bandwidth - Specify minimum guaranteed amount of Downstream bandwidth, expressed in terms of kbps
Brustable(Max) Download Bandwidth - Specify maximum amount of Downstream bandwidth, expressed in terms of kbps
Schedule Specify Schedule
Click Schedule list to select
View details link Opens new browser window and displays the details of the schedule selected Click Close to close the window
Add button Assigns schedule to the bandwidth policy Cancel button Cancels the current operation
Table – Assign Schedule to User based Committed Bandwidth policy screen elements Remove Schedule details
Screen - Remove Schedule from User based Bandwidth policy
Screen Elements Description
Select Select Schedule detail(s) for deletion Click Select to select
More than one schedule details can also be selected Select All Select all details for deletion
Click Select All to select all details Remove Detail button Removes the selected schedule detail(s)
Table - Remove Schedule from User based Bandwidth policy screen elements
Note
The changes made in the policy become effective immediately on saving the changes.
Delete Bandwidth policy Prerequisite
• Bandwidth policy not attached to any Logon Pool, user or IP address
Select Policies → Bandwidth policy → Manage policy to view the list of policies
Screen - Delete Bandwidth policy
Screen Elements Description
Del Select policy for deletion Click Del to select
More than one policy can also be selected Select All Selects all polices for deletion
Click Select All to select all policies Delete button Deletes selected policies
Table - Delete Bandwidth policy screen elements