OSI/TS Configuration and Management Manual

Background Information About Addressing

OSI/TS Configuration and Management Manual—424831-001

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SNPA Addresses Over LANs

In a LAN environment, the SNPA address is the fixed hexadecimal string FE followed

by the MAC (medium access control) address of the LAN controller. The MAC address

is assigned and hardwired into the controller by the manufacturer. Note that due to the

lack of a common, formal definition for SNPA addresses, other OSI implementations

may interpret the SNPA address as the MAC address only. Such implementations,

however, do not cause any interoperation problem with the way SNPA addresses are

used in the protocols.

In OSI/TS subsystems that use TLAM (in case of K-series systems) to provide

subnetwork services, the SNPA address of the TSP process is described as follows:

In OSI/TS susbsytems that use PAM, for S-series systems providing subnetwork

services, the SNPA address of the TSP process is described as follows::

LAN SNPA Address

Consists of ... FE string followed by the TLAM

station address (MAC address;

hardwired into the contoller)

Programmatically Fetched

Using SCF Command ...

INFO SERVICE L2-service-name

Configured

Using SCF ...

Local SNPA address:

LANLOCALSNPA attribute

(optional)

Remote SNPA address:

LANREMOTESNPA attribute