HP StorageWorks 4/16 Brocade OS Command Reference Manual Supporting Fabric OS - Page 451

portCfg 2 Uncommitted tunnels compete for bandwidth. Changing com_rate is potentially disruptive. -c 0|1 Disable (0) or enable (1) compression on the existing tunnel. -f 0|1 Disable (0) or enable (1) fastwrite on the existing tunnel. -k timeout Specifies the keep alive timeout, in seconds for the existing tunnel. timeout values are 8 to 7,200; default is 10. If tape pipelining is enabled, minimum value is 80. -q control_dscp DSCP (DiffServ Code Point) Marking for tunnel's TCP control connection. Valid range is from 0 to 63 (inclusive). Default Value is 0. -Q data_dscp DSCP (DiffServ Code Point) Marking for tunnel's TCP control connection. Valid range is from 0 to 63 (inclusive). Default Value is 0. -M Turns on default QoS mapping in the specified tunnel. Default is off. There are two ways of prioritizing network traffic over FCIP tunnels: Differentiated Services (DSCP) and Layer 2 Class of Service (L2CoS). If the -M option is set, the VC on the FCIP outbound frame will be 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 at anytime. Qosmap settings are unaffected by the -M option. -m time Specifies the minimum retransmit time, in milliseconds for the existing tunnel. time values are 20 to 5,000; default is 100. -r retransmissions Specifies the maximum retransmissions for the existing tunnel. Values are 1 to 16; default is 8. If tape pipelining 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. When changing this value, the value specified must be greater than the calculated value. -s 0|1 Disable (0) or Enable (1) selective acknowledgement (SACK) on the existing tunnel. -t 0|1 Disable (0) or Enable (1) tape pipelining on the existing tunnel (requires fast write to be turned on as well). -p Control L2 CoS Specifies the PL2_Class_of_Service/Priority, as defined by IEEE 802.1p, for the FCIP control connection. Range is 0-7. Default is 0. -P L2 CoS Specifies the PL2 Class of Service/Priority, as defined by IEEE 802.1p, for the FCIP data connection. Range is 0-7. Default is 0. delete tunnel_id Deletes specified FCIP tunnel. qosmap tunnel_id args Modifies (or resets to default), the VC to QoS map- ping for a particular FCIP tunnel. This table can be modified at anytime without bringing down the tunnel. Fabric OS Command Reference 425 53-1000599-01