Setting Up A Remote Switch Fabric - HP Surestore 6164 - Switch User Manual

Setting Up A Remote Switch Fabric

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the gateway E_Port moves to pass-through mode and passes fibre channel
traffic from the switch E_Port to the ATM network.
A Remote Switch fabric requires two switches, with identical
configurations.
In addition to the normal switch configuration options, you must configure
these parameters:
• Timeout values - The Resource Allocation Timeout Value (R_A_TOV)
and Error Detect Timeout Value (E_D_TOV) must be increased, as
appropriate, for all switches participating in the Remote Switch fabric.
This provides for the possible increase in transit time caused by the
introduction of WAN links into the fabric. For more information about
timeout values, see the Fabric OS User's Guide.
• Data field size - All switches participating in the Remote Switch fabric
must have the data field size configured to the maximum of 2048 bytes
to accommodate the maximum field size supported by the ATM
gateway. Data field sizes smaller than 2048 bytes can be set, but they
can cause significant performance degradation.
• Class F frame suppression - All switches participating in the Remote
Switch fabric must have the Class F frame suppression flag set. Class F
frames are automatically converted to Class 2 frames.
• BB credit - The setting for BB credit must be the same on both
switches.
HP Distributed Fabrics User's Guide