Set a per-host limit on bandwidth usage
Per Host QoSQuality of Service is applied at the Virtual Circuit level. It is disabled by default. A Virtual Circuit with Per Host QoS enabled is called a Dynamic Virtual Circuit (DVC).
- On your browser, open the Exinda Web UI (
https://Exinda_IPInternet protocol_address). - Key-in the User and Password.
- Click Login.
- Click Configuration > Optimizer.
- Click Create New Virtual Circuit.
- In the Virtual Circuit Name field, type a name for the virtual circuitlogical definitions that partition a a physical network circuit and used to determine what traffic passes through it and how much.
- In the Virtual Circuit Bandwidth field, type the amount of bandwidth to be used by the virtual circuit.
- To enable Per Host QoS, select the Dynamic Virtual Circuit checkbox. The dialog box expands to show the Dynamic Options.
- In the Per Host Bandwidth field, set the amount of bandwidth (in kB/s or percentage of the virtual circuit bandwidth) that each host will receive This bandwidth is guaranteed, so it will be available to each host, if required.
NOTE
If you select Automatically Share, the amount of bandwidth each host receives calculated by dividing the Virtual Circuit guaranteed bandwidth by the number of active hosts.
- In the Per Host Max Bandwidth field, set the maximum amount of bandwidth (in kB/s or percentage of the virtual circuit bandwidth) that each host can burst to. If No Bursting Allowed is selected, each host gets only the bandwidth that they have been guaranteed.
- Set the location of the hosts to which to allocate bandwidth.
NOTE
Internal Hosts are those that are on the LANLocal area network side of the appliance. External Hosts are those that are on the WANWide Area Network side of the appliance.
- Set the maximum number of hosts that can use the Dynamic Virtual Circuit. Any host that becomes active after the maximum number of hosts is exceeded do not fall into this Virtual Circuit.
NOTE
If you select Auto, the maximum number of hosts is calculated by assuming each host gets its guaranteed bandwidth.
NOTE
- There is a system limit of 325,00 hosts that can fall into each Dynamic Virtual Circuit. This may occur if the Virtual Circuit has more than 300 Mbps of bandwidth. When this limit is exceeded, hosts fall into the next applicable Virtual Circuit.
- When Per Host QoS is enabled, a further level of traffic shaping is introduced. Traffic is first shaped at the Host level, then at the Policy level. The bandwidth allocated will be the minimum of the two levels.
Examples
The following examples describe various Dynamic Virtual Circuit configurations.
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Name: Example 1 Bandwidth:1024 kb/s Direction: Both Network Object: Internal Users Dynamic Virtual Circuits Enabled: Yes Per Host Bandwidth: Auto Per User Max Bandwidth: 100% Host Location: Internal Max Hosts: Auto |
Internal Users is a Network Object that defines all hosts on the LAN side of the Exinda appliance:
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Name: Example 2 Bandwidth: 1024kbps Direction: Both Network Object: Internal Users Dynamic Virtual Circuits Enabled: Yes Per Host Bandwidth: 10% Per User Max Bandwidth: No Host Location: Internal Max Hosts: Auto |
Internal Users is a Network Object that defines all hosts on the LAN side of the Exinda appliance.
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Name: Example 3 Bandwidth: 1024kbps Direction: Both Network Object: Internal Users Dynamic Virtual Circuits Enabled: Yes Per Host Bandwidth: 64kbps Per User Max Bandwidth: 50% Host Location: Internal Max Hosts: 16 |
Internal Users is a Network Object that defines all hosts on the LAN side of the Exinda appliance:
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Name: Example 4 Bandwidth: 1024kbps Direction: Both Network Object: Internal Users Application: Citrix Dynamic Virtual Circuits Enabled: Yes Per Host Bandwidth: 64kbps Per User Max Bandwidth: No Host Location: Internal Max Hosts: 16 |
Internal Users is a Network Object that defines all hosts on the LAN side of the Exinda appliance. "Citrix" is an Application that defines Citrix traffic. This VC will match all Internal User's Citrix traffic:
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