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Parameter
Description
Device
Enter the maximum bandwidth peak from the client to the host (for example, USB data).
Bandwidth
Limit
The usable range of the device bandwidth is 1,000 to 220,000 Kbps for Tera1 devices and 1,000 to
600,000 Kbps for Tera2 devices.
The PCoIP processor only uses the required bandwidth up to the Device Bandwidth Limit maximum,
and dynamically adjusts the bandwidth in response to network congestion. Setting this field to 0
configures the PCoIP processor to use the maximum rate available in the network at any time.
We recommend setting this field to the limit of the network connected to the client and host.
When applied to devices running firmware lower than 3.0, a value other than 0 is rounded to the
nearest megabit per second, with a minimum value of 1 Mbps.
Device
Enter the temporary limit on the network bandwidth during periods of congestion. When the device
Bandwidth
detects packet loss, the device bandwidth is rapidly reduced to this value, and then more slowly
Target
reduced below it. This enables for a more even distribution of bandwidth between users sharing a
congested network link.
Device
Enter the minimum bandwidth when congestion is present and bandwidth is required. This enables
Bandwidth
you to optimize performance for a network with understood congestion or packet loss. If the
Floor
bandwidth is not required, the bandwidth used drops below the floor.
This setting defines the minimum bandwidth from the client to the host (for example, USB data).
A setting of 0 configures the PCoIP processor to reduce bandwidth to 1,000 Kbps during these
network impairments. You should have a good understanding of the network topology before
setting this to a non-zero value.
The firmware implements a slow-start algorithm that increases the bandwidth used until the
required bandwidth is reached, network congestion is detected, or the Device Bandwidth Limit is
met. It begins at the lesser of the Device Bandwidth Limit and 8,000 Kbps, and increases the
bandwidth used within seconds. The slow-start algorithm enables a graceful session startup for
low bandwidth scenarios (for example, WAN scenarios). After initiating a PCoIP session, users may
temporarily notice low bandwidth video artifacts as the algorithm ramps up bandwidth use.
When applied to devices running firmware lower than 3.0, a value other than 0 is rounded to the
nearest megabit per second, with a minimum value of 1 Mbps.
© 2020 Teradici
Configuring Session Bandwidth
299
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