HP Brocade 8/12c Brocade Fabric OS Documentation Updates - Supporting Fabric O - Page 64
Unsupported configurations for FCFW, Configuring and enabling FCFW
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8 Documentation updates for Fabric OS v6.4.0 and v6.4.1 • FC ports on both the 7500 switch and the FR4-18i blade are organized into two groups. Ports 0-7 form one group, and ports 8-15 form the other. A maximum of four ports in each group may be configured as FCFW. • The maximum bandwidth available for FCFW is 4 Gbps per group. This bandwidth is shared by all write flows. • Host initiators and target devices must be directly connected to the 7500 switch or FR4-18i blade on their respective ends of the ISL. FCFW must be configured and enabled for the ports on both the ends of the flow. Mismatch of the configuration results in I/O failure. Unsupported configurations for FCFW Multiple equal-cost configurations are not natively supported by FCFW. In some cases, traffic isolation zoning may be used to support multiple equal-cost configurations. Refer to the Fabric OS Administrator's Guide for more information about traffic isolation zoning. Configuring and enabling FCFW Take the following steps to configure and enable FCFW. 1. Create a zone configuration to filter FCFW flows. FCFW flows are configured by creating a zone name with an fcacc token as a prefix. For LSAN configuration, use lsan_fcacc as a prefix, as shown in the following example.. #zonecreate fcacc_myzone1, "initiator-wwn; target-wwn" #zonecreate LSAN_fcacc_myzone2, "initiator-wwn; target1-wwn" #cfgcreate mycfg, "fcacc_myzone1; LSAN_fcacc_myzone2" #cfgenable mycfg 2. Ensure that FCFW is enabled on the switch or blade using the fastwritecfg - -show command. If Fastwrite is not enabled, enable FCFW using the fastwritecfg command. The following example enables FCFW for a blade in slot 3. switch:admin> fastwritecfg --enable 3 !!!! WARNING !!!! Enabling FC Fastwrite will require powering off and back on the and it may take upto 5 minutes. For non bladed system, the switch will be rebooted. Data traffic will be disrupted. Continue (Y,y,N,n): [ n] y 3. Disable the FC ports that you intend to use for FCFW using the portdisable command. 4. Enable FCFW using the portcfg fastwrite command on the ports you just disabled. The following example enables FCFW on FC port 3 on a blade in slot 3. portcfg fastwrite 3/3 --enable 5. Enable the zoning configuration established in step 1. 6. Enable the ports that were disabled in step 3. 7. Repeat the steps for the blade or switch on the other end of the FCFW path. 52 Fabric OS Documentation Updates 53-1002063-09
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