ServerNet Cluster Manual

ServerNet Cluster Description
ServerNet Cluster Manual—520575-003
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Modular ServerNet Expansion Boards (MSEBs)
•
Program the SEBS and/or MSEBs, as well as any other routers within a system to
route packets to the MSEBs that connect this system to the external ServerNet
fabrics. Such routing occurs whenever these packets are addressed to a ServerNet
ID that does not lie within the range of ServerNet IDs for the current system.
•
Program the MSEBs in slots 51 and 52 of group 01 to route ServerNet packets to
the external fabrics if the packets are destined for a different node.
•
Control the configuration of the plug-in card (PIC) that provides the ServerNet
connection between the system and the external ServerNet fabrics. This is the
single-mode fiber PIC that has the node-numbering agent (NNA)
field-programmable gate array (FPGA).
•
Provide events to an external client, such as the OSM or TSM server software, to
indicate problems encountered while configuring a system to become a member of
a ServerNet cluster.
Modular ServerNet Expansion Boards (MSEBs)
A modular ServerNet expansion board (MSEB) is similar to the ServerNet expansion
board (SEB) currently in use in NonStop S-series servers. MSEBs provide connections
for ServerNet cables that link one system enclosure to another. However, unlike SEBs,
MSEBs use plug-in cards (PICs) to provide a choice of cable media (ECL, optical fiber,
or serial copper) for routing ServerNet packets.