Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 603

Proxy PID configuration 24 Proxy PID configuration When an FC router is first configured, the PIDs for the proxy devices are automatically assigned. Proxy PIDs (as well as phantom domain IDs) persist across reboots. The most common situation in which you would set a proxy PID is when you replace a switch. If you replace the switch and want to continue using the old PID assignments, you can configure it to do so; this value remains in the system even if the blade is replaced. To minimize disruption to the edge fabrics, set the proxy PIDs to the same values used with the old hardware. The fcrProxyConfig command displays or sets the persistent configuration of proxy devices. Used with the -s slot option, it can also influence the assignment of the xlate domain port number (which is used to determine the Area_ID field of the PID) and the Port_ID field. Like the PIDs in a fabric, a proxy PID must be unique. If the slot argument results in a duplicate PID, it will be ignored. Proxy PIDs are automatically assigned to devices imported into a fabric, starting at f001. For Proxy IDs projected to an M-EOS edge fabric in McDATA fabric mode, use valid ALPAs (lower 8 bits). Use the fcrXlateConfig command to display or assign a preferred domain ID to a translate domain. Fabric parameter considerations By default, EX_Ports and VEX_Ports detect, autonegotiate, and configure the fabric parameters without user intervention. You can optionally configure these parameters manually. • To change the fabric parameters on a switch in the edge fabric, use the configure command. Note that to access all of the fabric parameters controlled by this command, you must disable the switch using the switchDisable command. If executed on an enabled switch, only a subset of attributes is configurable. • To change the fabric parameters of an EX_Port on the FC router, use the portCfgEXPort command. • To change the fabric parameters of a VEX_Port, use the portCfgVEXPort command. The backbone fabric PID mode and the edge fabric PID mode do not need to match, but the PID mode for the EX_Port or VEX_Port and the edge fabric to which it is attached must match. You can statically set the PID mode for the fabric by using the -p option with the portCfgEXPort command. Use the -t option to disable the negotiate fabric parameter feature; otherwise, the PID mode is autonegotiated. The various edge fabrics may have different PID modes. Fabric parameter settings, namely, E_D_TOV (error-detect timeout value), R_A_TOV (resource-allocation timeout value), and PID format, must be the same on EX_Ports or VEX_Ports and on the fabrics to which they are connected. You can set the PID format on an EX_Port when you configure an inter-fabric link. The default values for E_D_TOV and R_A_TOV for an EX_Port or VEX_Port must match those values on other Fabric OS switches. You do not need to adjust these parameters for an EX_Port or VEX_Port unless you have adjusted them for the edge fabric. The default values for R_A_TOV and E_D_TOV are the recommended values for all but very large fabrics (ones requiring four or more hops) or high-latency fabrics (such as ones using long-distance FCIP links). Fabric OS Administrator's Guide 603 53-1002745-02