rlPhdPortsIfIndexName 1.3.6.1.4.1.9.6.1.101.53.3.1.2

The L2 interface number associated with this port, in string format based on the overall hardware architecture of the device (i.e., for monolithic devices just numbers, devices composed of modules (boards, cards) or stackable devices composed of monolithic units in form <module /stack unit number> - <port number on current module /stack unit number>, stackable devices in which each unit is composed of modules <stack unit number> - <module number> - <port number>