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You must connect an ASM Interconnect module to the Remote Supervisor Adapter
and to each xSeries 450 server that you connect to the ASM interconnect network
bus.
Attention:
Adapter, do not plug the ASM Interconnect module into the Remote Supervisor
Adapter Ethernet port.
To connect the servers, note the following setup and configuration considerations:
v Ensure that the ASM interconnect network is set up as a bus topology. You must
v Ensure that the total combined length of all Ethernet cables connecting the
v Each Remote Supervisor Adapter, ASM PCI adapter, or ASM processor that is
Forwarding alerts
Remote Supervisor Adapters, ASM PCI adapters, and ASM processors that are
connected to an ASM interconnect network share resources and
system-management information. This section provides information on how alerts
are forwarded in the ASM interconnect network.
During normal operation, each Remote Supervisor Adapter, ASM processor, or ASM
PCI adapter on the ASM interconnect network communicates with the other
processors and adapters on the network. Processors or adapters that have a
modem or Ethernet connection notify the other processors and adapters that these
communications resources are available for use by other servers on the ASM
interconnect network. These resources are then used as ASM interconnect network
resources, enabling Remote Supervisor Adapters, ASM processors, or ASM PCI
adapters on the ASM interconnect network to send alerts using a modem or the
network, even if they do not have a modem or network connection physically
attached.
When alerts are generated, they are forwarded to the Remote Supervisor Adapter,
ASM processor, or ASM PCI adapter on the ASM interconnect network that has the
communication resources to forward the alert. If no system on the ASM interconnect
network meets the requirements, the alert is set for transmission if the connection
type is configured or becomes available later.
If multiple modems or network connections exist in the ASM interconnect network,
you cannot specify which system will receive an alert or which will use its modem or
network connection to forward the alert. If an alert is forwarded to a Remote
Supervisor Adapter, ASM processor, or ASM PCI adapter that is unable to deliver
the alert (for example, the modem it is configured to use has failed or the network
cannot resolve the destination IP address), the processor or adapter attempts to
26
xSeries 450: User's Guide
level of firmware is available on the World Wide Web at
http://www.ibm.com/pc/support. For more information on updating firmware,
see the Remote Supervisor Adapter User's Guide on the IBM xSeries
Documentation CD.
To avoid damage to the Ethernet connector on the Remote Supervisor
connect the servers to the ASM interconnect network in a series, with terminated
beginning and end points.
server in the ASM interconnect network does not exceed 91 M (300 ft).
connected to the ASM interconnect network bus counts as one connection. For
example, if an ASM PCI adapter is installed in a server that has an ASM
processor, the processor and the adapter connect to each other using one ASM
interconnect connection, but the processor and the adapter count as two
connections on the ASM interconnect network bus.
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