ServerNet Cluster Manual

ServerNet Cluster Description
ServerNet Cluster Manual—520575-003
1-10
Coexistence With Expand-Based Networking
Products
The ServerNet Cluster product relies on many software components, described in the
ServerNet Cluster Software Overview on page 1-33.
Coexistence With Expand-Based Networking Products
Nodes in a ServerNet cluster coexist as systems belonging to an Expand network. The
ServerNet cluster product introduces a new line type for Expand: the
Expand-over-ServerNet line.
ServerNet clustering is compatible with all other Expand-based products. For example,
a node in a FOX ring can simultaneously function as a node in a ServerNet cluster.
Logical coexistence of the ServerNet cluster subsystem and the ServerNet/FX adapter
subsystem is made possible by using different line-handler processes (Expand-over-
ServerNet versus Expand-over-FOX) to handle incoming and outgoing Expand
messages and packets. Physical coexistence is made possible by using different
hardware components to route the packets:
Figure 1-5 shows an example of a ServerNet cluster coexisting within a FOX ring. This
arrangement enables communication from NonStop:
•
K-series to K-series
•
K-series to S-series
•
S-series to K-series
•
S-series to S-series
ServerNet clusters can also coexist with ATM, Ethernet, Fast Ethernet, Token Ring,
and other HP WAN and LAN products.
For more information, see the Expand Configuration and Management Manual.
FOX nodes Use ServerNet/FX adapters and fiber-optic cable for routing.
ServerNet nodes Use MSEBs and cluster switches for routing.
Note. ServerNet cluster technology permits a wide variety of network topologies to be
constructed. To find out which topologies have been tested and approved, contact your HP
representative.