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1-88 EMC Connectrix DS-32B2 and ED-12000B Fabric OS Reference Manual
Telnet Commands
Descriptions of the switch fabric setting fields are as follows:
Domain
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 (refer to VC En coded Address Mode).
BB Credit
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.
R_A_TOV
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-out 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
The 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.
Data Field Size
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.