Spare
Reserved portion of the NSAP.
The predefined value is 0x0000 (hex.).
RD
Routing domain.
The predefined value is 0x0000 (hex.).
Area
Area identifier indicating the routing area to which
a node belongs.
The predefined value is 0x0000 (hex.).
System ID
System identifier representing the node. The IEEE
802.3 MAC address.
A IEEE-MAC number is reserved and physically
stored on every NE.
SEL
Selector field used to direct the protocol data units
(PDU) to the correct destination.
The predefined value is 0x01 (hex.).
Fixed 10-byte address structure
The fixed 10-byte address structure (local Lucent Technologies NSAP address format)
is shown in the following figure:
Address fields
The meaning of the NSAP address fields is described in the following table:
Field
Meaning
Description
AFI
Authority and format identifier specifying the
NSAP address format.
The predefined value is 0x49 (hex.), indicating that
the ISO Data Country Code (ISO-DCC) is the
address format.
Area
Area identifier indicating the routing area to which
a node belongs.
The predefined value is 0x0000 (hex.).
System ID
System identifier representing the node. The IEEE
802.3 MAC address.
A IEEE-MAC number is reserved and physically
stored on every NE.
SEL
Selector field used to direct the protocol data units
(PDU) to the correct destination.
The predefined value is 0x01 (hex.).
Flexible NSAP address structure
The flexible NSAP address format is shown in the following figure:
1 Byte
AFI
Area
2 Bytes
System ID
6 Bytes
1 Byte
SEL
10 Bytes
Management communication setup concepts
NSAP address structure
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3-10
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