Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 441)

force-up ethernet
Forces the member port of a dynamic LAG to be logically operational even when the dynamic LAG is
not operating. The no form of the command causes the specified port to be logically operational only
when the dynamic LAG is operating.
Syntax force-up ethernet port
no force-up ethernet port
Command Default The member ports of a dynamic LAG are logically operational only when the dynamic LAG is operating.
Parameters port
Specifies the port.
Modes Dynamic LAG configuration mode
Usage Guidelines When the dynamic LAG is not operational, the port goes to "force-up" mode and the show lag
command output shows the operational status "Ope" of this port as "Frc". 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 form to 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.
If any port in a dynamic LAG receives an LACPDU, the port in force-up mode leaves the force-mode
and becomes a member port in the dynamic LAG.
Examples The following example shows PXE boot support enabled on member port 3/1/1 of a dynamic LAG R4-
dyn.
Brocade(config)# lag R4-dyn
Brocade(config-lag-R4-dyn)# force-up ethernet 3/1/1
History
Release version Command history
08.0.01 This command was introduced.
force-up ethernet
FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide 441
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