When polling the ProxySG SNMP MIB, the network interface index number - "ifDescr or ifIndex" will be different across proxy models.
The ifDescr or ifIndex will show which index number the interface will be. Based on the lab test, it shows that the order of the ifDescr or ifIndex is different across platform or proxy models.
For example, if compare with SG900 and SG810, the index number or ifDescr for interface 0:0 on both proxies are different. Other model like SG600 and SG300 are showing the same order of ifDescr or ifIndex.