Technical data

42 Fabric OS FCIP Administrator’s Guide
53-1002474-01
Configuration steps
2
.
TABLE 8 Circuit options
Option Argument Disruptive Description
Committed rate <committed rate>
Create behavior: Sets the
minimum and maximum
committed rate to the value
specified for <committed
rate>.
Short option: -b or -B
Yes This option may be used on a portcfg
fciptunnel create command or on the
portcfg fcipcircuit create command to set a
committed rate for an FCIP circuit. When
this option is used on the portcfg
fciptunnel create command, the
committed rate applies only to circuit 0.
To modify the committed rate or if you
intend to use ARL on the circuit, use the -b
and -B options to set the minimum and
maximum committed rates.
Adaptive rate limiting
(ARL)
Short option: -b
Long option: --min-comm-rate
Operands: <kbps>
Yes The minimum committed rate is a
guaranteed minimum traffic rate for an
FCIP circuit. The valid ranges for
-min-comm-rate are 10,000 Kbps through
1,000,000 Kbps for GbE ports and 10,100
Kbps to 100,000 Kbps for 10 GbE ports
NOTE: When added together, the
minimum committed rates for all
circuits cannot exceed the speed of
the GbE port.
Short option: -B
Long option: --max-comm-rate
Operands: <kbps>
Yes The maximum committed rate is the rate
that the tunnel will try to achieve, based on
bandwidth availability and network
performance. The valid ranges for
-min-comm-rate are 10,000 Kbps through
1,000,000 Kbps for GbE ports and 10,100
Kbps to 100,000 Kbps for 10 GbE ports
NOTE: When ARL is used, The link cost is
equal to the sum of the maximum
traffic rates of all established and
currently active lowest metric
circuits in the tunnel.
Selective
acknowledgement
Short option: -s
Long option: --sack
Operands (modify only): 0|1
• Create behavior:
Operands are not
required. Selective
Acknowledgement will
be disabled when
specified on create.
• Modify behavior:
Requires operands.
Yes Disables or enables selective
acknowledgement. Selective
acknowledgement allows a receiver to
acknowledge multiple lost packets with a
single ACK response. This results in better
performance and faster recovery time.
Selective acknowledgement is initially
turned on. For some applications and in
some situations, you may need to turn
selective acknowledgement off. This
option is used to toggle the option off and
on.
Keep-alive timeout Short option: -k
Long option:
--keepalive-timeout
Operands: <ms>
Yes The keep-alive timeout in seconds. The
range of valid values is 8 through 7,200
seconds, and the default is 10.
Refer to “Keep-alive timeout option” on
page 44 for more information.