HP Switch SFP Modules - Manual (Page 94)

Managing Ports
Mapping Ports
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Using the Map Ports dialog, you can assign a TH port to multiple TF ports. For
redundancy purposes, a backup port mapping can also be specified. To open the
Map Ports dialog (
Figure 3-42 ) open the Port menu, and select Map Ports.
Leaving a TH port unmapped has the same effect as unplugging a Fibre Channel
cable. You can map multiple primary and backup ports for any TH port. A port
designated as primary will be the first path chosen. If there are multiple primary
ports, the TH ports are distributed (using an algorithm) across the TF ports. Ports
designated as backup ports only become active when all primary ports fail.
Figure 3-42. Map Ports Dialog
The four external ports (numbered 0-3) can be configured as Transparent Fabric
(TF) or Pass-thru (PT) ports. The four internal ports (numbered 4-7) can be
configured as Transparent Host (TH) ports or Pass-thru (PT) ports. By default, all
TH ports are mapped to all TF ports as primary.
NOTE:
How ports are mapped affects the operational state of TH ports. If a TH port
is not mapped to a TF port, the TH port will be listed as offline. If a TH port is
mapped to a TF port but the TF port is offline or non-existent, the TH port will
also be listed as offline. If a TH port is mapped to a TF port and the TF port
is online, the TH port will be listed as online. Any TH port must be mapped to
a TF port to activate the connection and allow data to pass through. Without
a connection, the TH port is offline.