Table of Contents
Advertisement
Chapter 9
Management Network Connectivity
CLNP uses network service access points (NSAPs) to identify network devices. The CLNP source and
destination addresses are NSAPs. In addition, CLNP uses a network element title (NET) to identify a
network-entity in an end system (ES) or intermediate system (IS). NETs are allocated from the same
name space as NSAP addresses. Whether an address is an NSAP address or a NET depends on the
network selector value in the NSAP.
The ONS 15600 supports the ISO Data Country Code (ISO-DCC) NSAP address format as specified in
ISO 8348. The NSAP address is divided into an initial domain part (IDP) and a domain-specific part
(DSP). NSAP fields are shown in
are editable. Shorter NSAPs can be used. However NSAPs for all NEs residing within the same OSI
network area usually have the same NSAP format.
Table 9-9
Field
IDP
AFI
IDI
DSP
DFI
ORG
Reserved Reserved
RD
AREA
Table
NSAP Fields
Definition
Description
Authority and
Specifies the NSAP address format. The initial value is 39 for the
format identifier
ISO-DCC address format.
Initial domain
Specifies the country code. The initial value is 840F, the United States
identifier
country code padded with an F.
DSP format
Specifies the DSP format. The initial value is 80, indicating the DSP
identifier
format follows American National Standards Institute (ANSI)
standards.
Organization
Organization identifier. The initial value is 000000.
Reserved NSAP field. The Reserved field is normally all zeros (0000).
Routing domain
Defines the routing domain. The initial value is 0000.
Area
Identifies the OSI routing area to which the node belongs. The initial
value is 0000.
9.7.3 OSI Connectionless Network Service
9-9. NSAP field values are in hexadecimal format. All NSAPs
Cisco ONS 15600 Reference Manual, R7.0
9-29
Advertisement
Table of Contents
