Destination Address (6 bytes) (Token-Ring)

Protocol: Token-Ring MAC Token-Ring PCI

Field: destination address

Length: 6 bytes

Contents: destination MAC address.

Token-Ring may use their burned-in MAC address containing the manufacturer ID:

IEEE MAC Address

Mostly, the burned-in address is replaced by logical addresses indicated by a value of 0x4000 within the first two bytes. IBM recommends certain guidelines:

Token-Ring Addresses (IBM Guidelines)

Using logical addresses, the Token-Ring frame has the following structure:

a

I/G = Individual or Group Address

0 = Individual

1 = Group (multicast, broadcast)

U/L = Universally or Locally Administered Address

0 = Universally (assigned by IEEE)

1 = Locally (user defined)

FAI = Functional Address Indicator

0 = normal

1 = functional address

Token-Ring Addresses (Group/Functional)