PtopoPortId
This TC describes the format of a port identifier string. Objects of this type are always used with an associated PtopoPortIdType object, which identifies the format of the particular PtopoPortId object instance. If the associated PtopoPortIdType object has a value of 'portIdIfAlias(1)', then the octet string identifies a particular instance of the ifAlias object. If the associated PtopoPortIdType object has a value of 'portIdEntPhysicalAlias(2)', then the octet string identifies a particular instance of the entPhysicalAlias object for a port component (i.e., entPhysicalClass value of 'port(10)'). If the associated PtopoPortIdType object has a value of 'portIdMacAddr(3)', then this string identifies a particular unicast source MAC address associated with the port. If the associated PtopoPortIdType object has a value of 'portIdPtopoGenAddr(4)', then this string identifies a network address associated with the port. The first octet contains the IANA AddressFamilyNumbers enumeration value for the specific address type, and octets 2 through N contain the PtopoGenAddr address value in network byte order.