The types of port trunking available for
the actual port. A trunk consists of a
number ports sitting next to each
other. The first port is selected as
master for the trunk, the following as slaves.
trunkWidthTwo(1): Port is available as
master for 2 port trunking.
trunkWidthFour(2): Port is available as
master for 4 port trunking.
trunkMaster(3): Port is master in a trunk.
trunkSlave(4): Port is slave in a trunk.
notAvailable(99): Port is not available
for trunking.