This is the list of port(s) on which the given MAC Address is configured
Note that this port list is constructed assuming there are as many ports
per slot as given in the object extremeChassisPortsPerSlot.
Thus, if extremeChassisPortsPerSlot is 128, then the 129th bit in the port
list (reading left to right) indicates port 2:1. Similarly, the 256th bit
would indicate port 2:128 while the 257th bit would indicate port 3:1. Note
especially that the bit positions in port list do not depend on the actual
physical presence or absence of the given ports on the blade or of any
blade itself.