Qlogic 12000 Series Reference Manual page 76

Switch Command Line Interface
Groups and Commands
Options:
lifetime
The packet lifetime value between 0 and 31, inclusive.
Sample Output:
-> smSwitchLifetime 15
SM switch packet lifetime: 15 (~134217 microseconds)
NOTES: The switch lifetime value determines the maximum time a packet may
remain within a switch, calculated using the formula: 4.096 * (2 switchlifetime) in
microseconds. The packet lifetime values may be between 0 and 31, inclusive. The
subnet manager must be running to display or dynamically set the default switch
lifetime. Changes will only affect the SM that is currently running and will not be
persistent.
smHoqLife
Display or dynamically set the head of queue packet lifetime for switch ports.
Syntax:
smHoqLife [lifetime]
Options:
lifetime
The packet lifetime value between 0 and 31, inclusive.
Sample Output:
-> smHoqLife 9
SM HOQ Liftime: 9 (~2097 microseconds)
NOTES: Use this command to display the maximum lifetime that a packet may
remain at the head of a virtual lane transmission queue before it is discarded by a
switch. Packet lifetime values are between 0 and 31, inclusive. These are calculated
using the formula: 4.096 * (2 ^ switchlifetime) in microseconds. The subnet manager
must be running to display, or to dynamically set the Hoq lifetime. Changes to Hoq
lifetime set with the smHoqLife command only affect the currently running SM and
will not be persistent.
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