Qtech QSW-8200-28T-AC-DC [28/36] Flush enable mac

User Manual

Chapter 4. Commands for ULPP 28

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4.12 flush enable mac

 Command: flush enable mac

 Function: Enable sending the flush packets of updating MAC address.

 Parameter: None.

 Default: By default, enable sending the flush packets of updating MAC address.

 Command mode: ULPP group configuration mode.

 Usage Guide: If enable this function, when the link is switched, it will actively send the

flush packets to notify the upstream device, so as to update the MAC address table.

 Example: Enable sending the flush packets of updating MAC address.

 Switch(config)# ulpp group 20

 Switch(ulpp-group-20)# flush enable mac

4.13 flush enable mac-vlan

 Command: flush enable mac-vlan

 Function: Enable sending the flush packets of deleting the dynamic unicast mac

according to vlan.

 Parameter: None.

 Default: Disable.

 Command mode:ULPP group configuration mode.

 Usage Guide: If configure this command, when the link is switched, it will actively send

the flush packets to notify the upstream device to delete the dynamic unicast mac

according to vlan.

 Example: Enable sending the flush packets deleted by mac-vlan.

 Switch(config)#ulpp group 1

 Switch(ulpp-group-1)#flush enable mac-vlan

4.14 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