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18 Supported Topologies
Cascaded Short-Wave Hub Topology
The example in Figure5 shows two model S10 hubs connected in a cascade topology.
Cascaded short-wave hubs use one port on each hub for the hub-to-hub connection. Such a
configuration increases the potential distance between nodes in the loop an additional 500
meters. The maximum distance between the server and FC-AL devices with cascaded
short-wave hubs is 1500 meters (1.5 km).
Figure 5 Example Topology: Cascaded Short-Wave Hubs
Cascaded hubs must have the same firmware versions to operate properly. If you are using
Fibre Channel Manager to manage cascaded hubs, configure the hub that has the LAN
(ethernet) connection as a parent hub and the remaining hub as a child hub (see
Configuring Cascaded Hubs on page60).
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Maximum distance between
FC-AL Devices
HP-UX Server
500 m
500 m
500 m
FC-AL Devices
server and FC-AL device = 1500 m
or
HP NetServer
NOTE: Connecting HP-UX
servers and HP NetServers
to the same hub is NOT
a supported configuration.
model S10 hub model S10 hub