Defining Connectivity Components

Defining Link Stations

If you do not know what value to use, consult your SNA network planner.

If the remote end of this link is a VTAM host, the SAP number is the SAPADDR= parameter of the VTAM PU definition.

If you are configuring a link to an AS/400 system, the MAC address is the ADPTADR parameter in the Line Description.

Additional Link Station Parameters for X.25 (QLLC).

Circuit type

Specify either Permanent virtual circuit or Switched virtual circuit to indicate whether the circuit is permanent or switched.

Channel ID

The channel ID that identifies the virtual circuit the link station is to use (only applicable for a permanent virtual circuit). Channel IDs are numbered from 1 up to a maximum of 4096. If you have only one permanent virtual circuit, its channel ID is likely to be 1.

Remote X.25 address

The DTE address of the remote DTE as a series of hexadecimal digits (only applicable if the circuit is a switched virtual circuit).

Adapter/Port Number

The card number (if your card has only one port). If you have only a single card, use a value of 0.

If your card has more than one port, use the value npx, where n is the card number and x is the port number. For example, the first port on the first card should be specified as 0p1.

SpiderX25 stacks use an adapter number and a port number to support multiple X.25 cards, each with possibly multiple physical ports. Cards are numbered starting at 0; ports are numbered starting at 1.

To determine the card and port number to use, use a string that matches the end of the device name of the X.25 driver. For example, use an adapter/port number of 0p1 for an X.25 driver named /dev/x25_0p1.

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Chapter 5