HP Compaq Presario,Presario 2140, User Manual

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Configuring the Director
125 Director Product Manager User Guide
Fabric Parameters
Configure the following parameters as required by your fabric.
BB_Credit
Configure the director to support buffer-to-buffer credit (BB_Credit) from 1
through 60. This is the value used for all ports, except those configured for
extended distance buffering (10-100 km). The default value is 16. For a
description of the buffer-to-buffer credit, refer to the industry specification, Fibre
Channel Physical and Signaling Interface.
R_A_TOV
Configure resource allocation time-out value (R_A_TOV) in tenth-of-a-second
increments. This variable works with the error detect time-out value (E_D_TOV)
variable to control the director’s behavior when an error condition occurs.
Resources are allocated to a circuit when errors are detected and are not released
for reuse until the time set by the R_A_TOV value expires. The default value is
100 tenths (10 seconds). Set a value between 10 tenths and 1200 tenths (1 through
120 seconds).
Note: Set the same value for R_A_TOV on all directors and switches in a multiswitch
fabric. If the value is not the same on all units, the fabric segments. Also, the value for
R_A_TOV must be greater than the value configured for E_D_TOV.
E_D_TOV
Adjust the E_D_TOV in tenth-of-a-second increments. An error condition occurs
when an expected response is not received within the time limit set by this value.
The default value is 20 tenths (2 seconds). Set a value between 2 tenths through
600 tenths (.2 through 60 seconds).
Note: Set the same value for E_D_TOV on all switches and directors in a multiswitch
fabric. If the value is not the same, the fabric segments.