### About the SNA Subnet ID and the syncconf File

#### Introduction

The easiest way to correlate adapter/port combinations with the Subnet ID is to view the /opt/snet/etc/syncconf file.

#### Example:

# cat /opt/snet/etc/syncconf

wans 0 0 A def def stackA - SDLC

wans 0 1 B WAN84 LC_LAPBDTE stackB 18005551212 X25

wans 0 2 C WAN84 FR_DTE stackC 0 FRAME

wans 0 3 D WAN84 FR_DTE stackD - FRAME

wans 1 0 E def def stackE - SDLC

wans 1 1 F WAN84 FR_DTE stackF 1 FRAME

wans 1 2 G ? ? ? ? ?

wans 1 3 H ? ? ? ? ?

#### Explanation

In the above example, a four port adapter is located as adapter 0. A two port adapter has been configured as adapter 1. Although the two port adapter is displayed for four ports within the syncconf file, the graphical interface only allows the administrator to configure two of those ports.

The following can be inferred from the previous example:

- SDLC is configured for Adapter 0, port 0, and is assigned Subnet ID 'A'.

- SDLC is also configured for Adapter 1, port 0, and is assigned Subnet ID 'E'.

- X.25 is configured for Adapter 0, port 1 and is assigned Subnet ID 'B'.

- Frame Relay is configured for Adapter 0, ports 2 and 3, and assigned Subnet IDs 'C' and 'D', respectively.

- Frame Relay is also configured for Adapter 1, port 1, and is assigned Subnet ID 'F'.

- Furthermore, for Frame Relay, the eighth field indicates:
  '0' : only SFRE configured for that Subnet ID
  '-' : only IFRE configured for that Subnet ID
  '1' : both SFRE and IFRE configured for that Subnet ID

- Assuming a 4 port adapter instead of a 2 port adapter, then Adapter 1 ports 2 and 3 would be unconfigured.