Brocade Communications Systems 8 Command Reference Manual page 662

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portCfg
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modify tunnel_id [arguments]
Modifies the properties of an existing FCIP tunnel. This operation disrupts the
traffic on the specified FCIP tunnel for a brief period of time. If IPSec is
enabled on the FCIP tunnel, the tunnel cannot be modified. To modify the
tunnel attributes, you must delete and re-create the tunnel.
delete tunnel_id
Deletes the specified FCIP tunnel.
Optional arguments for fciptunnel create and modify include the following. Tunnel
parameters are by default disabled. To change the default (for example, enabling
FastWrite) with fciptunnel create, specify the parameter only. To modify any of these
parameters with fciptunnel modify, specify the parameter and one of the values in square
brackets.
-n remote_wwn Specifies the remote-side FC entity WWN.
-d description Specifies a descriptor for the FCIP tunnel, for example, "Tunnel 0 to San
Jose Office".
-c [0|1] Disables (0) or enables (1) compression on the specified tunnel. By
default, compression is disabled.
-f [0|1] Disables (0) or enables (1) FCIP FastWrite on the specified tunnel. By
default, FCIP FastWrite is disabled.
-t [0|1] Disables (0) or enables (1) read/write Tape Pipelining on the existing
tunnel (requires FCIP FastWrite to be enabled).
-k timeout Specifies the keep alive timeout, in seconds. Timeout values are 8 to
7,200. The default is 10. If Tape Piplelining is enabled, the minimum
supported value is 80.
-M [0|1] Disables (0) or enables (1) default VC QoS mapping on the specified
tunnel. By default VC QoS mapping is disabled. There are two ways of
prioritizing network traffic over FCIP tunnels: Differentiated Services
Code Point (DSCP) and Layer 2 Class of Service (L2CoS). If the -M option
is set, the VC on the FCIP outbound frame is mapped to both a DSCP and
L2CoS value. These default values can be modified on a per-FCIP tunnel
basis with the fciptunnel qosmap option. The -M option can be turned on
or off any time. QoS map settings are unaffected by the -M option.
-q control-dscp Specifies the DSCP (DiffServ Code Point) marking used for the TCP
connection of the FCIP tunnel. This operand is optional. The range is 0 to
63. The default value is 0.
-Q data-dscp Specifies the DSCP (DiffServ Code Point) marking used for the data TCP
connection of the FCIP tunnel. This operand is optional. The range is 0 to
63. The default value is 0.
-m time Specifies the minimum retransmit time, in milliseconds. The range is
20ms to 5000ms; the default value is 100ms.
-r retransmission
Specifies the maximum retransmissions. Values are 1 to 16. The default
value is 8. If Tape Piplelining is enabled, the default value is calculated
based on the minimum retransmit time to ensure that the TCP
connection does not time out before the host times out. The specified
value must be greater than the calculated value.
Fabric OS Command Reference
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