HP Brocade 8/24c Brocade Fabric OS Command Reference Manual Supporting Fabric - Page 656

2 portCfg 624 -s |--sack 0|1 Disables or enables selective acknowledgement code (SACK) on the FCIP circuit. Note that SACK is by default enabled. Use -s | --sack to disable the feature when creating a circuit. Use -s | --sack 0 to disable and -s | --sack 1 to enable SACK when modifying a circuit. -k |--keepalive-timeout timeout Specifies the keep alive timeout in milliseconds. The valid range is 500 ms to 720000 ms. If the tunnel does not already have FICON Emulation enabled, circuits created on the tunnel default to 10000 ms (10 seconds) for the FCIP Trunking keep alive timeout. If FICON emulation is enabled on the FCIP Tunnel when a circuit is created, the keep alive timeout defaults to 1000 ms (1 seconds.) -x |--metric metric Specifies the metric for the configured circuit. The valid range is 0 to 1. The default value is 0. A lower metric assigns a higher priority to the circuit. As data is flowing through the FCIP tunnel, it automatically traverses the lowest metric cost circuits. For example, if a tunnel has four circuits, three of which are set to a metric of 0 and one is set to a metric of 1, all data will flow over the metric 0 circuits. If all of the metric 0 circuits go down, traffic will run over the metric 1 circuits. This parameter is meaningful only, if you configure more than one circuit. -m |--min-retrans-time time Specifies the minimum time interval in milliseconds between retransmits. The valid range is 20 ms to 5000 ms. The default value is 100 ms. -r |--max-retransmits retransmissions Specifies the maximum number of retransmissions. The valid range is 1 to 16. The default value is 8. -v |--vlan-tagging vlan_id Creates an FCIP tunnel with VLAN Tagging and Class of Service (CoS). Specify a vlan_id in the range between 1 and 4094. If any other VLAN option is specified, the VLAN ID must also be specified. Refer to the IEEE 802.1p specification for more information. You can configure VLAN tags when you create a circuit or after the fact by modifying a circuit. Note that adding or modifying the VLAN configuration after a circuit has been created is a disruptive operation. You may also specify VLAN tagging per IP interface with the portCfg vlantag command.The VLAN configuration at the IP interface level is for non-data path traffic only. If the data path traffic is to be tagged, it must be done through the VLAN tagging option with the fcipcircuit create or modify command. Note that the circuit VLAN configuration takes priority over the IP interface VLAN configuration. The following operands are optional with VLAN tagging: --l2cos-f-class l2cos Specifies the Layer 2 Class of Service (L2CoS) value for F-Class Traffic. This priority setting controls connections between switches. The range is 0 to 7. The default is 0. Fabric OS Command Reference 53-1001764-01