The aa-i-sid type represents a Backbone Service Instance
Identifier (I-SID). This is the 24-bit I-SID field used in the
I-TAG TCI of a Provider Backbone Bridging frame. The values 0,
2-254, and 16777215 are reserved for future standardization. The
value 255 is dedicated to use by the SPB protocol. For Auto Attach
values 2-255 are not allowed.
port-netid-type
binary
A 12-octet binary string representing the PortNetID fields of the
PPBN Auto Attach System TLV as specified in D.2.17 of IEEE Std
802.1Q. The 12 octet field uniquely identifies an Auto Attach port
within the administrative domain used for Auto Attach. The first 6
octets of the string are the binary representation of the system's
MAC address. The next 2 octets are reserved and have the value 0.
The last 4 octets are the integer IfIndex for the port.