HP StorageWorks Fabric OS 3.X Document Addendum (AA-RW24A-TE, January 2005)

Fabric OS reference guide
165Fabric OS 3.x Document Addendum
Domain
The domain number uniquely identifies the switch in a fabric. Normally, this value is
automatically assigned by the fabric. The range of allowed values varies depending on the
switch model and other system settings (see “VC Encoded Address Mode” on page 166).
BB Credit
The buffer-to-buffer (BB) credit represents the number of buffers available to attached devices
for frame receipt.
R_A_TOV
The resource allocation timeout value (R_A_TOV) is displayed in milliseconds. This variable
works with the E_D_TOV variable to determine the 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 before the timeout, the internal timeout clock resets and
waits for the next error condition.
E_D_TOV
The error detect timeout 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, an error condition is met.
Table 13: Switch Fabric Settings
Field Type Default Range
Domain Number 1 Varies
BB Credit Number 16 1 to 27
R_A_TOV Number 10000 E_D_TOV * 2 to
120000
E_D_TOV Number 2000 1000 to R_A_TOV / 2
WAN_TOV Number 0 0 to R_A_TOV / 4
MAX_HOPS Number 7 7 to 19
Data Field Size Number 2112 256 to 2112
Sequence-Level Switching Boolean 0 0 or 1
Disable Device Probing Boolean 0 0 or 1
Suppress Class F Traffic Boolean 0 0 or 1
SYNC IO Mode Boolean 0 0 or 1
VC Encoded Address Mode Boolean 0 0 or 1
Disable Translative Mode Boolean 0 0 or 1
Switch PID Format Number 1 0 to 2
Per-Frame Route Priority Boolean 0 0 or 1
Long-Distance Fabric Boolean 0 0 or 1