SSRPortList
List of ifIndexes that make up the ports to apply a layer 2 filter to. The ifIndexes are numbered sparsely starting from 1. An example string might be: 1,2,32 1,6,9, Each ifIndex must represent a physical port or link aggregation aka Smart Trunk ifType of propMultiplexor(54). Note ifIndexes may change across system resets per RFC 2233.