Installing and Administering OSI Transport Services

Chapter 3 87

Gathering Conﬁguration Information

Using the Remote System Worksheet

Subnetwork Addresses

The subnetwork information is typically transparent to the end user,

because the Network Layer (CONS or CLNS) determines this

information from the NSAP. In some cases, this mapping must be

conﬁgured on the system which is why this information is requested.

If you have multiple X.25 or LAN cards, use additional worksheets.

X.25 Subnetwork Information

This box contains other X.25 conﬁguration items that are important to

know to achieve successful interoperability.

NSel The Network layer selector (typically 0x01). This

ﬁeld may be left blank if it is not explicitly

conﬁgured on the remote.

CONS/CLNS/X.25

Subaddr

Indicate what (if any) subaddresses are used by

these services over X.25. If subaddressing is not

used then use “NULL.”

X.121 Provide the X.121 address of the remote system.

802.3/FDDI MAC This is the Media Access Control (MAC) layer

address of the remote LAN card. These are always

6 bytes long and should be speciﬁed in

hexadecimal.