Device Configuration : System : Profiles : Traffic Shaping
Traffic Shaping
The Traffic Shaping Policy page displays list of predefined and custom policies and provides option to create a new traffic shaping policy, schedule traffic shaping policy, update parameters or delete the policy.
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 traffic shaping policy is to manage and distribute the total bandwidth on certain parameters and user attributes. Traffic shaping policy allocates & limits the maximum bandwidth usage of the user and controls the web and network traffic.
To configure traffic shaping policy:
Define for whom you want to create policy
Define policy type
Define the implementation strategy of the policy
Define bandwidth usage
Policy can be defined/created for:
Users - It restricts the bandwidth of a particular user.
Rules - It restricts the bandwidth for any entity to which the rule is applied.
Web Categories - It restricts the bandwidth for the URL categorized under the Web Categories. To implement restriction, policy is to be assigned through Security Policies.
Applications - It restricts the bandwidth for the application. To implement restriction, policy is to be assigned through Security Policies.
Types of policies
Two types of bandwidth restriction can be placed:
1. Limit - user cannot exceed the defined bandwidth limit.
2. Guarantee - user is allocated the guaranteed amount of bandwidth and can draw bandwidth up to the defined burst-able limit, if available.
It enables to assign fixed minimum and maximum amounts of bandwidth to the users. By borrowing the excess bandwidth when 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 for receiving constant levels of bandwidth during peak and non-peak traffic periods.
Guaranteed represents the minimum guaranteed bandwidth and burst-able represents the maximum bandwidth that the user can use, if available.
Limit Upload/Download Seperately:
Policy can be implemented in two ways depending on the policy Type:
Total (Upload + Download)
Individual Upload and Individual Download
Limit Policy
In this type of bandwidth restriction, user cannot exceed the defined bandwidth limit. Two ways to implement strict policy:
Total (Upload + Download)
Individual Upload and Individual Download
Implementation Strategy
Bandwidth specified
Example
Total (Upload + Download)
Total bandwidth
Total bandwidth is 20 kbps upload and download combined cannot cross 20 kbps
Individual (Upload / Download)
Individual bandwidth i.e. separate for both
Upload and Download bandwidth is 20 kbps then either cannot cross 20 kbps
Guarantee Policy
Implementation Strategy
Bandwidth specified
Example
Total (Upload + Download)
Guaranteed bandwidth Burst-able bandwidth
Guaranteed bandwidth is 20 kbps upload and download combined will get 20 kbps guaranteed (minimum) bandwidth. Burst-able bandwidth is 50 kbps upload and download combined can get up to 50 kbps of bandwidth (maximum), if available.
Individual (Upload / Download)
Individual Guaranteed and Burstable bandwidth i.e. separate for both
Individual guaranteed bandwidth is 20 kbps Individually get 20 kbps guaranteed (minimum) bandwidth. Individual burstable bandwidth is 50 kbps Individually get maximum bandwidth up to 50 kbps, if available.
Bandwidth Usage Type
Policy can be configured for two types of bandwidth usage:
Individual - Allocated bandwidth is for the particular User/Rule/Web Category/Application only.
Shared - Allocated bandwidth is shared among all the Users/Rules/Web Categories/Applications who have been assigned this policy.
The device is shipped with predefined traffic shaping policies. These predefined policies are immediately available for use until configured otherwise. You can also define custom policies to meet your organization’s requirements.