User Manual

18 IBM® xSeries 33 0: Installation Guide

Connecting the ASM bus

The servers in the Advanced System Management (ASM) bus are referenced by their

assigned addresses and not their position in the rack.

Complete the follow ing steps to connect the ASM bus:

1. Turn off the servers.

2. Locate the RS-485 ports on the rear of the servers and several cables with RJ-14

connectors on both ends.

3. Starting at the top most server to be included in the ASM bus connect one end of

the cable into the RS- 485 (B) port a nd the other end of the cable into the RS -485 (A)

port of the next server.

4. Continue connecting the servers together in this manner until you reach the

second to last server in the ASM bus.

5. Connect a cable fr om the RS-485 (B) port of the secon d to last server to the R S-48 5

(B) port of the last server. Refer to the following illustration to see how to connect

the ASM bus.

Note: The illustratio ns in this documen t might differ slightly from your

hardware.

6. Turn on the servers.

RS-485(A)

RS-485(B)

Ethernet cable

with RJ-14 connectors