NonStop S-Series Planning and Configuration Guide (G06.25+)

ServerNet Communication Pathways
HP NonStop S-Series Planning and Configuration Guide—523303-015
6-2
PMF CRUs and Communication Pathways
PMF CRUs and Communication Pathways
SEBs (including MSEBs) provide communication pathways between enclosures.
Within each enclosure, additional communication pathways are provided by ServerNet
routers in the PMF CRUs and IOMF CRUs, which also connect to other components.
The routers in the PMF CRUs and IOMF CRUs transfer data to and from routers in the
SEBs. This subsection describes communications between PMF CRUs and other
enclosures by way of SEBs.
ServerNet Router Inside a PMF CRU
The ServerNet router inside a PMF CRU provides connections over a ServerNet fabric
including connections between the processor in that PMF CRU and either:
•
One SEB in a Tetra 8 system
•
Two SEBs in a Tetra 16 system
Router Types
•
PMF CRU has router 1 (6 ports, 50 MB).
•
PMF 2 CRU has router 2 (12 ports, 125 MB).
For Information About ... Refer to ... Page
Components and functions of a PMF CRU Processor Multifunction (PMF) CRUs
4-31
Components and functions of an IOMF CRU I/O Multifunction (IOMF) CRUs 4-50
Components and functions of an SEB SEBs and MSEBs 4-18
Tetra 8 and Tetra 16 topologies Section 3, Topologies 3-1
Symbols used in cabling diagrams Section 5, ServerNet Cabling
5-1
ServerNet Router Inside a PMF CRU 6-2
PMF CRU Pathways Within One Enclosure 6-5
PMF CRU Pathways Within One Enclosure: One PMF CRU Removed 6-5
PMF CRU Pathways Between Enclosures 6-6
PMF CRU Pathways With a PMF CRU Removed From the Outer
Tetrahedron
6-7
PMF CRU Pathways With a PMF CRU Removed From the Inner
Tetrahedron
6-8
Note. The information in this section about routers applies to all models of ServerNet routers.
For more information about the differences between the ServerNet router 1 and router 2, refer
to Processor Multifunction (PMF) CRUs on page 4-31.