snFdpCacheDevicePort 1.3.6.1.4.1.11.2.3.7.11.12.1.3.20.1.2.1.1.7

The Port-ID string as reported in the most recent FDP/CDP message. This will typically be the value of the ifName object (e.g., Ethernet0). The zero-length string indicates no Port-ID field (TLV) was reported in the most recent FDP/CDP message.