topic Re: Removing Port Members from MLT interface in ExtremeSwitching (VSP/Fabric Engine)

Removing Port Members from MLT interface

rrrgamara — Mon, 17 Nov 2025 01:51:05 GMT

Hello,

Good day.

I have been trying to remove ports from mlt member but i always have this error:

(config)#no mlt 3 member 1/7

Error: MLT remove ports fail

Am I missing some configurations?

I also tried the no mlt 3 command to see if it would remove all configurations on the mlt but when i created the mlt 3 again it shows that the ports are automatically a member of it.

Appreciate your assistance on this.

Thank you!

rob

Re: Removing Port Members from MLT interface

jack425g — Mon, 17 Nov 2025 06:41:49 GMT

Hello,

the port needs to be shut down before you can remove it from the MLT.

Shutdown Port: Enter interface configuration mode and use the shutdown port 1/7 command.

Remove Member: Then run no mlt 3 member 1/7.

No MLT 3 Issue: Ports re-join because their LACP configuration remains on the interface. To fully remove the configuration, you must first remove the members, then use no lacp on the interfaces, and then run no mlt 3.

Best Regard,

Jack

Re: Removing Port Members from MLT interface

rrrgamara — Mon, 17 Nov 2025 07:01:42 GMT

Hi Jack,

Thank you for your response.

Tried this as well but it is still giving me the same error:

(config)#int gigabitEthernet 1/7
(config-if)#shutdown
(config-if)#no mlt 3 mem
(config-if)#no mlt 3 member 1/7

Error: MLT remove ports fail

(config)#no mlt 3 member 1/7

Error: MLT remove ports fail

Is there other configuration I should remove first to succesfully remove the port on the mlt member?

Thank you

Re: Removing Port Members from MLT interface

WillyHe — Mon, 17 Nov 2025 15:50:41 GMT

Hello,

Don't see what the problem is, for me it works, see example below for a static MLT configuration.

Is it a static or dynamic (LACP) MLT configuration?

In a static MLT configuration, port and vlan membership is controlled by the MLT.
In a dynamic/LACP MLT configuration you cannot remove ports by the "no mlt xyz member ...." command because membership is controlled by LACP.
Go to the port and use the "no lacp enable" command.

ACCESS-1:1(config)#show mlt 119
Mlt Info
==================================================================
PORT MLT MLT PORT VLAN
MLTID IFINDEX NAME TYPE ADMIN CURRENT MEMBERS ORIGIN IDS
------------------------------------------------------------------
119 6262 test access norm norm 1/19-1/22 CONFIG

ACCESS-1:1(config)#no mlt 119 member 1/21-1/22

Hope it helps

regards
WillyHe

Re: Removing Port Members from MLT interface

rrrgamara — Thu, 20 Nov 2025 01:15:07 GMT

Alrigth, I should have used the "no lacp enable" command on the ports.

Thank you!

rob

Re: Removing Port Members from MLT interface

Manoj_Kumar — Thu, 20 Nov 2025 11:43:19 GMT

If the MLT using LACP (Dynamic), then there is no need of static add/remove of port members. Ports will be added to the MLT or SMLT based on the LACP key defined under MLT and port configuration. "show mlt" will show associated port members only when port is UP.

To remove LACP port from the MLT or SMLT, just go to the interface and shutdown it first for the safer side and then disable LACP on that specific port

(config)#int gigabitEthernet 1/7

shut

no lacp enable

no shut

exit

then verify using show mlt command. You should not see port 1/7 associated to MLT. Later you can remove other LACP parameters from port 1/7.

example :

config)#int gigabitEthernet 1/7

(config-if)#default lacp aggregation enable
(config-if)#default lacp key