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Switch Admin Window

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Configure (Fabric) Field Descriptions

The fields available in the Configure Fabric Tab are described in 

Table 24:  Configure (Fabric) Field Descriptions 

Field

Descriptions

Fabric Parameters

BB Credit

Use to configure the number of buffers that are available to 

attached devices for frame receipt. The default BB Credit is 

16. The range is 1—16. 

R_A_TOV

Use to configure the Resource Allocation Time Out Value in 

milliseconds. This variable works with the E_D_TOV to 

determine switch actions when presented with an error 

condition. The default is 10000. The possible range is 

4000—120000. 

E_D_TOV

Use to configure the Error Detect Time Out Value in 

milliseconds. This timer is used to flag a potential error 

condition when an expected response is not received within 

the set time. The valid range is 1000—5000. 

Data Size

Use to configure (in bytes) the largest possible data field size. 

The valid range is 256—2112. 

Sequence Switching

Select check box to enable frames of the same sequence from 

a particular group to be transmitted together. When this 

option is not selected, frames are transmitted interleaved 

among multiple sequences. Under normal circumstances, 

sequence level switching should be disabled for better 

performance. However, some host adapters have issues when 

receiving interleaved frames among multiple sequences. 

Disable Device 

Probing

Set this mode only if the switch N_Port discovery process 

(PLOGI, PRLI, INQUIRY) causes an attached device to fail.
When set, devices that do not register with the Name Server 

are not present in the Name Server data base. 

Per-Frame Routing 

Priority

Choose to select or deselect Per-Frame Routing Priority. When 

enabled, the virtual channel ID is used in conjunction with a 

frame header to form the final virtual channel ID.

VC Encoded 

Address Mode

 Set this mode only if the fabric includes a StorageWorks 

SAN switch.
When set, the frame source and destination address use an 

address format that is compatible with StorageWorks SAN 

switches.