Brocade Fabric OS Command Reference Guide v6.1.0 (53-1000599-02, June 2008)

Fabric OS Command Reference 91
53-1000599-02
configure
2
Switch Fabric Settings
Fabric settings control the overall behavior and operation of the fabric. Some of these settings,
such as the domain, are assigned automatically and may differ from one switch to another in a
given fabric. Other parameters, such as buffer-to-buffer credit or timeout values, can be modified to
suit specific applications or operating environments but must be in agreement among all switches
to allow formation of the fabric.
Table 2 lists the switch fabric settings that can be modified.
Fabric setting fields are defined as follows:
Domain The domain number uniquely identifies a 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.
R_A_TOV The resource allocation time out value specified 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.
E_D_TOV Error detect time out value specified in milliseconds. This timer is used to flag
a potential error condition when an expected response is not received within
the set time limit. If the time for an expected response exceeds the set value,
then an error condition occurs.
WAN_TOV Wide area network time out value specified in milliseconds. This timer is the
maximum frame time out value for a WAN, if any, interconnecting the Fibre
Channel islands.
MAX_HOPS Maximum hops is an integer that denotes the upper limit on the number of
hops a frame might have to traverse to reach any destination port from any
source port across the fabric.
TABLE 2 Configure command fabric parameters (* = multiplication symbol)
Field Type Default Range
Domain number 1 varies
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
Per-frame Route Priority boolean 0 0 or 1
Long Distance Fabric boolean 0 0 or 1
BB Credit number 16 1 to 27
Insistent Domain ID Mode boolean 0 0 or 1