Preemption Delay; Preemption Mode; Protect Vlan-Reference-Instance - Edge-Core ES4624-SFP Basic Management Manual

31.3.12 preemption delay

Command: preemption delay <integer>
no preemption delay
Function: Configure the preemption delay, the no command configures the preemption
delay as the default value.
Parameter: <integer>: the preemption delay, range from 1 to 600, in second.
Default: The default preemption delay is 30.
Command mode: ULPP group configuration mode.
Usage Guide: The preemption delay is the delay time before the master port is
preempted as the forwarding state, for avoiding the link oscillation in a short time. After
the preemption mode is enabled, the preemption delay takes effect.
Example: Configure the preemption delay as 50s for ULPP group.
Switch(config)# ulpp group 20
Switch(ulpp-group-20)# preemption delay 50

31.3.13 preemption mode

Command: preemption mode
no preemption mode
Function: Open/close the preemption mode of ULPP group.
Parameter: None.
Default: Do not preempt.
Command mode: ULPP group configuration mode.
Usage Guide: If the preemption mode configured by ULPP group, and the slave port is
in forwarding state, and the master port is in the standby state, the master port will turn
into the forwarding state and the slave port turn into the standby state after the
preemption delay,.
Example: Configure the preemption mode of ULPP group.
Switch(config)# ulpp group 20
Switch(ulpp-group-20)# preemption mode

31.3.14 protect vlan-reference-instance

Command: protect vlan-reference-instance <instance-list>
no protect vlan-reference-instance <instance-list>
Function: Configure the protective VLANs of ULPP group, the no command cancels the
protective VLANs.
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