Concept Guide

l When no uplink is enforced and preemption is not enabled, and if the current uplink fails, the W-IAP tries to
find an available uplink based on the priority configured. The uplink with the highest priority is used as the
primary uplink. For example, if Wi-Fi-sta has the highest priority, it is used as the primary uplink.
l When no uplink is enforced and preemption is enabled, and if the current uplink fails, the W-IAP tries to find
an available uplink based on the priority configured. If current uplink is active, the W-IAP periodically tries to
use a higher-priority uplink and switches to the higher-priority uplink even if the current uplink is active.
You can enforce a specific uplink on a W-IAP by using the Instant UI or the CLI.
In the Instant UI
To enforce an uplink:
1. Click the System > show advanced settings > Uplink. The Uplink tab contents are displayed.
2. Under Management, select the type of uplink from the Enforce Uplink drop-down list. If Ethernet uplink
is selected, the Port text box is displayed.
3. Specify the Ethernet interface port number.
4. Click OK. The selected uplink is enforced on the W-IAP.
In the CLI
To enforce an uplink:
(Instant AP)(config)# uplink
(Instant AP)(uplink)# enforce {cellular|ethernet | wifi | none}
(Instant AP)(uplink)# end
(Instant AP)# commit apply
Setting an Uplink Priority
You can set an uplink priority by using the Instant UI or the CLI.
In the Instant UI
Setting an uplink priority:
1. Click System > show advanced settings > Uplink .
2. Under Uplink Priority List, select the uplink, and click the icons in the Uplink Priority List section, to
increase or decrease the priority. By default, the Eth0 uplink is set as a high-priority uplink.
3. Click OK. The selected uplink is prioritized over other uplinks.
In the CLI
Setting an uplink priority:
(Instant AP)(config)# uplink
(Instant AP)(uplink)# uplink-priority {cellular <priority> | ethernet <priority> | [port
<Interface-number> <priority>] | wifi <priority>}
(Instant AP)(uplink)# end
(Instant AP)# commit apply
Setting an Ethernet uplink priority :
(Instant AP)(uplink)# uplink-priority ethernet port 0 1
(Instant AP)(uplink)# end
(Instant AP)# commit apply
Enabling Uplink Preemption
The following configuration conditions apply to uplink preemption:
l Preemption can be enabled only when no uplink is enforced.
Dell Networking W-Series Instant 6.5.1.0-4.3.1.0 | User Guide Uplink Configuration | 324