TS Supplement (Includes RFC-1006 Support)

Introduction to the Tandem TCP/IP Subsystem

Introduction to RFC-1006

1–14 107751 Tandem Computers Incorporated

Tandem TCP/IP Subnet Addressing

Tandem TCP/IP defines a IP address on a Tandem system by use of the TCP/IP SCF

SUBNET object. Each subnet is represented by an IP address. Through each subnet,

the TCP/IP process interfaces with each TLAM or X25AM IOP and controller. Figure

1-11 illustrates what subnets on HOST9 (shown in Figure 1-8) might look like.

Figure 1-11. Subnets on HOST9

HOST9

OSI/TS

TCP/IP1

TLAM1 TLAM2

Controller1

Controller2

Subnet1

IPAddress1

Subnet2

IPAddress2

051

You can add a maximum of 13 subnets to each TCP/IP process, as follows:

Four Ethernet subnets (associated with TLAM devices)

Four Subnetwork Access Protocol (SNAP) subnets (associated with TLAM

devices)

Four X.25 subnets (associated with X25AM devices)

One loopback driver (used for testing purposes)

The total number of subnets on a Tandem system is limited by the number of TCP/IP

processes configured on that system. For example, HOST9 shown in Figure 1-11,

could have more than one TCP/IP process configured. Section 2, “RFC-1006

Subsystem Configuration,” describes the configuration of OSI/AS, OSI/TS, TCP/IP

and IOP processes.