HP 8/20q HP StorageWorks 8/20q Fibre Channel Switch QuickTools switch manageme - Page 62
Advanced switch properties, Advanced Switch Properties dialog box, Timeout values
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from the fabric. Use the FDMI HBA Entry Limit field on the Switch Properties dialog box to configure the maximum number of HBAs that can be registered with a switch. If the number of HBAs exceeds the maximum number, the FDMI information for those HBAs can not be registered. Select the FDMI Enabled option on the Switch Properties dialog box to Enable or Disable FDMI. If FDMI is Enabled on an HBA, the HBA forwards information about itself to the switch when the HBA logs into the switch. If FDMI is Enabled on a switch, the switch stores the HBA information in its FDMI database. Disabling FDMI on a switch clears the FDMI database. If you Disable FDMI on a switch and then re-enable it, you must reset the ports to cause the HBAs to log in again, and thus forward HBA information to the switch. To view detailed FDMI information for a device, click the Devices tab, and click (i) in the Details column of the Devices data window. The Detailed Devices Display dialog box displays the specific information for that device. See "Devices data window" on page 32 for more information. Advanced switch properties The Advanced Switch Properties dialog box (Figure 27) enables you to set the timeout values. The dialog box is available for only the entry switch. The switch will automatically be taken offline temporarily while the timeout values are being set and will be restored to its original state after the changes are completed. To open the Advanced Switch Properties dialog box, open the Switch menu and select Advanced Switch Properties. After making changes, click OK to put the new values into effect. Figure 27 Advanced Switch Properties dialog box Timeout values The switch timeout values determine the timeout values for all ports on the switch. The timeout values must be the same for all switches in the fabric. • R_A_TOV (Resource Allocation Timeout)-The maximum time a frame could be delayed and still be delivered. The default is 10000 milliseconds. • E_D_TOV (Error Detect Timeout)-The maximum round trip time that an operation between two N_Ports could require. The default is 2000 milliseconds. IMPORTANT: Mismatched timeout values will disrupt the fabric. These should not be changed unless absolutely necessary. The switch is temporarily placed offline to change these values. Managing system services The System Services dialog box (Figure 28) provides a central location for you to enable or disable any of the external user services such as Simple Network Management Protocol (SNMP), embedded web applet, 62 Managing switches