HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.2 administrator guide (5697-0 - Page 444

The following example shows traffic flowing through a trunking group (ports 5, 6, and 7). After port 6 fails, traffic is redistributed over the remaining two links in the group, ports 5 and 7: switch:admin> portperfshow 0 1 2 3 4567 Total 0 0 0 0 0145m144m145m 434 0 0 0 0 0144m143m144m 431 0 0 0 0 0162m0162m 324 0 0 0 0 0186m0186m 372 0 0 0 0 0193m0192m 385 0 0 0 0 0202m0202m 404 0 0 0 0 0209m0209m 418 ISL Trunking You can enable or disable ISL Trunking for a single port or for an entire switch. When you enter the portCfgTrunkPort or switchCfgTrunk commands to update the trunking configuration, the ports for which the configuration applies are disabled and re-enabled with the new trunk configuration. As a result, traffic through those ports can be disrupted. IMPORTANT: Trunking is performed based on the QoS configuration on the master and the slave ports. That is, in a given trunk group, if there are some ports with QoS enabled and some with QoS disabled, they form two different trunks, one with QoS enabled and the other with QoS disabled. For more information on QoS, see "QoS zones" on page 361. Enabling or disabling ISL Trunking on a port 1. Connect to the switch and log in using an account assigned to the admin role. 2. Enter the portCfgTrunkPort command. The format is: portcfgtrunkport [slotnumber/]portnumber mode slotnumber Specifies the number of the slot in which the port blade containing the port is located. This operand is required only for directors and enterprise-class platforms. portnumber Specifies the number of the port on which you want to enable or disable trunking. mode Enables (1) or disables (0) trunking on the specified port. The following example enables trunking on slot 1, port 3: switch:admin> portcfgtrunkport 1/3 1 done. switch:admin> Enabling or disabling ISL Trunking for all ports on a switch 1. Connect to the switch and log in using an account assigned to the admin role. 2. Enter the switchCfgTrunk command. The format is: switchcfgtrunk mode Mode 1 enables and mode 0 disables ISL Trunking for all ports on the switch. The following example enables trunking on all ports in the switch. switch:admin> switchcfgtrunk 1 Committing configuration...done. switch:admin> Setting port speeds For long-distance ports, if a port is set to autonegotiate the port speed, the maximum speed, which is 8 Gb/s, is assumed for reserving buffers for the port. If the port is running only at 2 Gb/s this wastes buffers. 440 Administering ISL trunking