HP StorageWorks MSA 2/8 - SAN Switch Reference Manual page 152

Fabric OS Commands
Table 2: Configure Command Fabric Parameters (Continued)
VC Encoded Address Mode
Core Switch PID Format
(V3.1.x only)
Per-frame Route Priority
Long Distance Fabric
Descriptions of the switch fabric setting fields are as follows:
Domain
BB Credit
R_A_TOV
E_D_TOV
Data Field Size
152
Field
The domain number uniquely identifies the switch in a
fabric. This value is automatically assigned by the fabric.
The range of valid values varies depending on the switch
model and other system parameter settings (
Encoded Address Mode).
The buffer-to-buffer (BB) credit represents the number of
buffers available to attached devices for frame receipt. The
range of allowed values varies depending on other system
settings.
The Resource Allocation Time Out Value (R_A_TOV) is
displayed in milliseconds. This variable works with the
variable E_D_TOV to determine switch actions when
presented with an error condition.
Allocated circuit resources with detected errors are not
released until the time value has expired. If the condition
is resolved prior to the time out, the internal time out clock
resets and waits for the next error condition.
Error Detect Time Out Value (E_D_TOV) is displayed in
milliseconds. This timer is used to flag a potential error
condition when an expected response is not received (an
acknowledgment or reply in response to packet receipt,
for example) within the set time limit. If the time for an
expected response exceeds the set value, then an error
condition occurs.
The data field size specifies the largest possible value, in
bytes, and advertises this value to other switches in the
fabric during construction of the fabric as well as to other
devices when they connect to the fabric. Setting this to a
value smaller than 2112 may result in decreased
performance.
Default
0 0 or 1
0 0 or 1
0 0 or 1
0 0 or 1
Fabric OS Version 3.1.x/4.1.x Reference Guide
Range
see
VC