HP 8/8 Brocade Access Gateway Administrator's Guide v6.3.0 (53-1001345-01, Jul - Page 46

3 Port Grouping policy . Port Grouping policy modes You can modify certain default behavior such as the following within a port group: • Login Balancing (LB) If login balancing mode is enabled for a port group and an F_Port goes offline, logins in the port group are redistributed among the remaining F_Ports. Similarly, if an N_Port comes online, port logins in the PG are redistributed to maintain a balanced N_Port-to-F_Port ratio. Please note the following facts about LB mode: - LB is disruptive. However, you can minimize disruption by disabling or enabling rebalancing of F_Ports on F_Port offline or N_Port online events. - You must be explicitly enable LB on a port group. - F_ports can be directly added to port groups that have Login Balancing mode enabled. • Managed Fabric Name Monitoring (MFNM) Fabric Name Monitoring mode automatically detects whether all the N_ports within a port group are physically connected to the same physical or virtual fabric. Once a misconnection is detected there are two methods to handle it, depending on the operating mode. For "default" mode a message is logged into RASLOG. For "managed" mode (MFNM), automatic failover disables on all N_ports within the N_port group. In both default and managed mode, the system queries the fabric name once every 120 seconds to detect inconsistencies such as a port group being connected to multiple fabrics. You can configure the monitoring timeout value to something other than 120 seconds using the ag --pgfnmtov command. Refer to "Setting the current fabric name monitoring timeout value" on page 28. Creating a port group and enabling login balancing mode 1. Connect to the switch and log in using an account assigned to the admin role. 2. Enter the ag --pgcreate command with appropriate operands to create a port group. In the following example, a port group named "FirstFabric" is created that includes N_Ports 1 and 3 and has login balancing enabled. switch:admin> ag --pgcreate 3 "1;3" -n FirstFabric1 -m "lb" Port Group 3 created successfully 3. Enter the ag --pgshow command to verify the port group was created. switch:admin> ag --pgshow PG_ID PG_Name PG_Mode N_Ports F_Ports 0 pg0 lb,mfnm none none 2 SecondFabric - 0;2 4;5;6 3 FirstFabric lb 1;3 10;11 26 Access Gateway Administrator's Guide 53-1001345-01