HP 6120XG ProCurve Series 6120 Blade Switches Management and Configuration Gui - Page 275
Changing Trunking Methods., Static LACP Trunks., VLANs and Dynamic LACP.
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Port Trunking Trunk Group Operation Using LACP ProCurve(config)# int a17 lacp passive Error configuring port A17: LACP and port security cannot be run together. ProCurve(config)# To restore LACP to the port, you must remove port security and re-enable LACP active or passive. Changing Trunking Methods. To convert a trunk from static to dynamic, you must first eliminate the static trunk. Static LACP Trunks. Where a port is configured for LACP (Active or Passive), but does not belong to an existing trunk group, you can add that port to a static trunk. Doing so disables dynamic LACP on that port, which means you must manually configure both ends of the trunk. Dynamic LACP Trunks. You can configure a port for LACP-active or LACPpassive, but on a dynamic LACP trunk you cannot configure the other options that you can on static trunks. If you want to manually configure a trunk, use the trunk command. (Refer to "Using the CLI To Configure a Static or Dynamic Trunk Group" on page 11-14.) VLANs and Dynamic LACP. A dynamic LACP trunk operates only in the default VLAN (unless you have enabled GVRP on the switch and use Forbid to prevent the ports from joining the default VLAN). ■ If you want to use LACP for a trunk on a non-default VLAN and GVRP is disabled, configure the trunk as a static trunk. Blocked Ports with Older Devices. Some older devices are limited to four ports in a trunk. When eight LACP-enabled ports are connected to one of these older devices, four ports connect, but the other four ports are blocked. The LACP status of the blocked ports is shown as "Failure". If one of the other ports becomes disabled, a blocked port will replace it (Port Status becomes "Up"). When the other port becomes active again, the replacement port goes back to blocked (Port Status is "Blocked"). It can take a few seconds for the switch to discover the current status of the ports. 11-23