rptrGroupPortCapacity
1.3.6.1.2.1.22.1.2.1.1.6
The rptrGroupPortCapacity is the number of ports
that can be contained within the group. Valid
range is 1-1024. Within each group, the ports are
uniquely numbered in the range from 1 to
rptrGroupPortCapacity.
Note: In practice, this will generally be the
number of ports on a module, card, or board, and
the port numbers will correspond to numbers marked
on the physical embodiment.