This article explains how you can override account-level Bandwidth Management profiles at the site level.
By default, the Bandwidth Management profiles (see What are the Cato Bandwidth Management Profiles) for the entire account also apply to all the sites. Since sites are not necessarily equal in terms of connectivity (available transports and links), you can override Bandwidth Management profiles for individual sites or even a specific link (such as ISPx vs ISPy, or ISP vs MPLS).
If you select the Limit only when the line is congested option for a bandwidth policy, the Cato Cloud always optimizes and maximizes the usage of your links capacity.
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If there is no contention for capacity, throttling is not applied.
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If there is contention for capacity, throttling is applied to the extent required by the policies that you defined.
The following examples show contention for capacity:
Scenario A:
In this scenario, Cato throttles the bandwidth for network rules using P20 (even though it is currently under the limit) in order to accommodate traffic in network rules using P10, which is not limited.
|
Policy |
Bandwidth Limits |
Current Bandwidth Usage |
|---|---|---|
|
P10 |
None |
80% |
|
P20 |
50% |
40% |
|
P30 |
20% |
0% |
|
Total Potential Bandwidth Usage: |
120% |
|
Scenario B:
In this scenario, the total for bandwidth limits is more than 100%, and Cato throttles traffic dynamically as required to maximize high-priority traffic.
|
Policy |
Bandwidth Limits |
|---|---|
|
P10 |
20% |
|
P20 |
30% |
|
P30 |
40% |
|
P40 |
20% |
|
Default |
N/A |
|
Total Bandwidth Limits: |
110% |
QoS profiles and Network Rules can be configured globally (account level), and tailored with as much granularity as required (for example, at site level).
For any profile that is overridden, the Account Default column displays the global upstream (U) and downstream (D) limits, and the RESTORE button is displayed.
We recommend that you use the % unit of measurement for Bandwidth Management profiles at the global level, and Mbps at the site level if you are overriding global profiles.
To override a global Bandwidth Management Profile for a site:
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From the navigation menu, click Network > Sites and select the site.
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From the navigation menu, click Site Settings > Bandwidth Management.
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If the site has multiple internet links, configure one of these options:
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Select the Apply settings on all Internet interfaces check box to apply the Bandwidth Management settings to all internet links (default). In this case, only one set of Bandwidth profiles appears for Internet Transports.
Note
Note: By default, the Cato Cloud assumes that all Internet links are used similarly in regards to QoS and, specifically, in applying limits on QoS. You can change this default behavior by clearing this check box as explained following.
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Clear the Apply settings on all Internet interfaces check box to individually configure the Bandwidth Management settings for each Internet link. In this case, a set of Bandwidth profiles appear for each link.
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Click on the profile you wish to override. The Edit Bandwidth panel opens.
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Modify the profile details as follows:
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Override: Enable or disable by clicking on the slider. Green indicates that the global profile for the account is overridden by the limits configured for this site.
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Limits: Select if and how to limit the bandwidth for this priority as follows:
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No Limit - do not force any bandwidth limits.
Note
Note: If you select No Limit, this priority can potentially starve traffic with lower priorities.
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Always Limit - always enforce the limit according to the upload/download values you define below.
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Limit only when line is congested - enforce the limit (according to the upload/download values you define below) only if the line is congested.
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Upload Limit/Download Limit: Type the required value and select the unit of measurement (% or Mbps).
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Click Apply. The profile configuration is added.
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Click Save. The profile configuration is saved.
For any profile that was overridden, the Account Defaults column display is updated to indicate the account default values for upstream and downstream limits.
When you override a Bandwidth Management profile for a site, the Bandwidth Management screen for the site shows the values of the Account Defaults profile. You can choose to stop overriding that profile and restore the default account settings.
To restore the default account Bandwidth Management settings to a site:
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From the navigation menu, click Network > Sites and select the site.
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From the navigation menu, click Site Settings > Bandwidth Management.
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In the row for the Bandwidth Management profile, click Restore.
The custom values are removed from the profile, and the default account values are restored.
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Click Save. The account defaults for the Bandwidth Management profile are restored.
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