Brocade: Managing trunking connections

First you need to make sure that the "Trunking" license is installed, using the command:
license --show

Enable/disable the ability to use a trunk on a port:
portcfgtrunkport slot/port [1 or 0]

Enable/disable the ability to use a trunk on all switch ports:
switchcfgtrunk [1 or 0]

Viewing information on trunks:
trunkshow
trunkshow -swname (adds information about neighbor switch names)
trunkshow -perf (adds trunk utilization information)

Configuring a port for long distance operation:
portcfglongdistance slot/port Distance_Level VC_Trans_Link_Init -distance n
where Distance_Level:
L0 - normal;
LE - <= 10km;
LD - auto;
LS - static;

and VC_Trans_Link_Init:
0 - IDLE;
1 - Arbitary;

distance - distance in kilometers (n not less than 10)