AWI: Bandwidth Settings

The settings on this page let you control the bandwidth used by a host or client during a PCoIP session. You can access this page from the Configuration > Bandwidth menu. The parameters on this page are applied immediately after you click Apply.

AWI Bandwidth Page

AWI Bandwidth Parameters

Parameter	Description
Device Bandwidth Limit	Enter the maximum bandwidth peak for hosts or clients. When configuring hosts, this setting defines the bandwidth from the host to the client (e.g., graphics data). When configuring clients, it defines the bandwidth from the client to the host (e.g., USB data). The usable range of the device bandwidth is 1000 to 220000 Kbps for Tera1 devices and 1000 to 600000 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. Note: When applied to devices running firmware older than 3.0, a value other than 0 is rounded to the nearest Megabit per second, with a minimum value of 1 Mbps.
Device Bandwidth Target	Enter the temporary limit on the network bandwidth during periods of congestion. When the host or client detects packet loss, the device bandwidth is rapidly reduced to this value, and then more slowly reduced below it.This allows for a more even distribution of bandwidth between users sharing a congested network link. Note: When applied to devices running firmware older than 3.0, a value other than 0 is rounded to the nearest Megabit per second, with a minimum value of 1 Mbps.
Device Bandwidth Floor	Enter the minimum bandwidth when congestion is present and bandwidth is required. This allows you to optimize performance for a network with understood congestion or packet loss. If the bandwidth is not required, the bandwidth used drops below the floor. When configuring hosts, this setting defines the minimum bandwidth from the host to the client (e.g., graphics data).When configuring clients, it defines the minimum bandwidth from the client to the host (e.g., USB data). A setting of 0 configures the PCoIP processor to reduce bandwidth to 1000 Kbps during these network impairments. You should have a good understanding of the network topology before setting this to a non-zero value. Note: 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 8000 Kbps, and increases the bandwidth used within seconds. The slow-start algorithm allows a graceful session startup for low bandwidth scenarios (e.g., WAN scenarios). After initiating a PCoIP session, users may temporarily notice low bandwidth video artifacts as the algorithm ramps up bandwidth use. Note: When applied to devices running firmware older than 3.0, a value other than 0 is rounded to the nearest Megabit per second, with a minimum value of 1 Mbps.

Parameter

Description

Device Bandwidth Limit

Enter the maximum bandwidth peak for hosts or clients. When configuring hosts, this setting defines the bandwidth from the host to the client (e.g., graphics data). When configuring clients, it defines the bandwidth from the client to the host (e.g., USB data).

The usable range of the device bandwidth is 1000 to 220000 Kbps for Tera1 devices and 1000 to 600000 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.

Note: When applied to devices running firmware older than 3.0, a value other than 0 is rounded to the nearest Megabit per second, with a minimum value of 1 Mbps.

Device Bandwidth Target

Enter the temporary limit on the network bandwidth during periods of congestion. When the host or client detects packet loss, the device bandwidth is rapidly reduced to this value, and then more slowly reduced below it.This allows for a more even distribution of bandwidth between users sharing a congested network link.

Note: When applied to devices running firmware older than 3.0, a value other than 0 is rounded to the nearest Megabit per second, with a minimum value of 1 Mbps.

Device Bandwidth Floor

Enter the minimum bandwidth when congestion is present and bandwidth is required. This allows you to optimize performance for a network with understood congestion or packet loss. If the bandwidth is not required, the bandwidth used drops below the floor.

When configuring hosts, this setting defines the minimum bandwidth from the host to the client (e.g., graphics data).When configuring clients, it defines the minimum bandwidth from the client to the host (e.g., USB data).

A setting of 0 configures the PCoIP processor to reduce bandwidth to 1000 Kbps during these network impairments. You should have a good understanding of the network topology before setting this to a non-zero value.

Note: 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 8000 Kbps, and increases the bandwidth used within seconds. The slow-start algorithm allows a graceful session startup for low bandwidth scenarios (e.g., WAN scenarios). After initiating a PCoIP session, users may temporarily notice low bandwidth video artifacts as the algorithm ramps up bandwidth use.

Note: When applied to devices running firmware older than 3.0, a value other than 0 is rounded to the nearest Megabit per second, with a minimum value of 1 Mbps.