HP 8/8 Access Gateway Administrator's Guide (53-1001760-01, June 2010) - Page 66

3 Failover Deleting F_Ports from a preferred secondary N_Port 1. Connect to the switch and log in using an account assigned to the admin role. 2. Enter the ag --prefdel command with the "F_Port1;F_Port2;..." N_Port operands to delete F_Ports from an N_Port. The list of F_Ports must be enclosed in quotation marks. Port numbers must be separated by a semicolon. In the following example, F_Ports 3 and 9 are deleted from preferred secondary N_Port 4. switch:admin> ag --prefdel "3;9" 4 Preferred N_Port is deleted successfully for the F_Port[s] Failover with device-based mapping Failover is handled similarly for port-based and device-based mapping, if devices are mapped to N_Port groups. If a device is mapped to an N_Port in a group, and an N_Port goes offline, the devices mapped to that N_Port will reconnect on the least loaded online N_Ports in the group. Enabling or disabling Failover or Failback policies for N_Ports have no effect on device-based mapping. A device will always fail over to an online N_Port in the port group, regardless of whether Failback is enabled for an N_Port or not. Whereas, with port-based mapping, if you disable the Failover or Failback policy on an N_Port, the F_Port will not failover or failback to other N_Ports. Failover behavior is different if a device is mapped to an specific N_Port instead of to a N_Port group. If mapping a device to a specific N_Port, you can define a secondary N_Port that will be used if the primary N_Port is offline. To maximize the device uptime it is recommended to map the device to a port group rather than to specific N_Ports. Adding a preferred secondary N-Port for device mapping (optional) Use the following steps to configure a secondary N_Port where devices will connect if their first or primary N_Port, if defined, is unavailable. 1. Connect to the switch and log in using an account assigned to the admin role. 2. To configure an N_Port as a failover port for one or multiple devices mapped to a specific N_Port, enter the ag --addwwnfailovermapping N_Port command with the "[WWN];[WWN]" option. All of the listed device WWNs will use the listed N_Port if it is available and the first mapped N_Port is unavailable. The following example configures N_Port 32 as the failover port for two devices already mapped to a primary N_Port. ag --addwwnfailovermapping 32 "10:00:00:06:2b:0f:71:0c;10:00:00:05:1e:5e:2c:11" To configure N_Port 32 as a failover port for all WWNs mapped to the N_Port, enter the ag --delwwnfailovermapping N_Port command with the --all operand. ag --delwwnfailovermapping 32--all 46 Access Gateway Administrator's Guide 53-1001760-01