Allied Telesis AT-FS970M Series - Manual (Page 714)

Chapter 47: Static Port Trunks
714
Removing Ports from Static Port Trunks or Deleting Trunks
To remove ports from a static port trunk, enter the Port Interface mode of
the ports to be removed and issue the NO STATIC-CHANNEL-GROUP
command. This example removes ports 4 and 5 from their current static
port trunk assignment:
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.4,port1.0.5
awplus(config-if)# no static-channel-group
To delete a static port trunk, remove all its member ports. This example
deletes a trunk that consists of member ports 15 to 17 and 21:
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.15-port1.0.17,port1.0.21
awplus(config-if)# no static-channel-group
Caution
To prevent the formation of loops in your network topology, do not
remove ports from a static port trunk without first disconnecting their
network cable. Network loops can result in broadcast storms that
can adversely affect network performance.