force-up ethernet
Forces the member port of a dynamic LAG (Link Aggregation Group) to be logically operational even if the dynamic LAG is not operating.
Syntax
Command Default
The member ports of a dynamic LAG are logically operational only if the dynamic LAG is operating.
Modes
Dynamic LAG configuration mode
Usage Guidelines
The no form of the command causes the specified port to be logically operational only when the dynamic LAG is operating.
When the dynamic LAG is not operational, the port goes to "force-up" mode. In this mode, the port is logically operational, which enables a PXE-capable host to boot from the network using this port. Once the host successfully boots from the network, the dynamic LAG can connect the host to the network with the LAG link. Even if the dynamic LAG fails later, this port is brought back to "force-up" mode and remains logically operational.
A port that is in "force-up" mode has the operational status ("Ope" ) of "Frc". Use the show lag command to display the operational status.
If any port in a dynamic LAG receives an LACPDU, the port in force-up mode leaves force-mode and becomes a member port in the dynamic LAG.
Examples
The following example enables PXE boot support on member port 3/1/1 of a dynamic LAG R4-dyn.
device(config)# lag R4-dyn device(config-lag-R4-dyn)# force-up ethernet 3/1/1
History
| Release version | Command history |
|---|---|
| 08.0.01 | This command was introduced. |