Allied Telesis AT-8800, RAPIER I, X900-48FE, AT-8900 manual Set switch thrashlimit, Set switch trunk

Software Version 2.8.1 39

thrashtimeout=none, and thrashaction is then changed to learndisable, then the router or switch automatically changes the thrashtimeout to 1 second.

If none is specified, the port is not automatically re-enabled, but can be re-enabled by using the enable switch port command for thrashaction=portdisable or linkdisable, and the enable switch port vlan command for thrashaction=vlandisable. The default is 1 second.

The vlanstatustrap parameter specifies whether the switch will send an SNMP trap whenever a port is enabled or disabled for a VLAN. A port can be disabled for a VLAN by using the disable switch port command, either when thrashing is detected on a port and the port’s thrashaction is vlandisable, or when a storm is detected by QoS storm protection and the stormaction is vlandisable. If on is specified, a trap is sent. If off is specified, a trap is not sent. The default is off.

set switch thrashlimit

Syntax SET SWItch THRASHLimit=5..255

Description This new command sets the maximum number of times a MAC address can move between ports, in one second. When the specified limit is reached, the thrashaction specifed with the set switch port command is applied. The default thrashlimit is 10.

Example To set the switch thrash limit to 100 MAC movements per second, use the command:

set swi thrashl=100

set switch trunk

Syntax SET SWItch TRunk=trunk [SPeed={10M100M1000M10G}]

[THRASHAction={LEarndisableLINKDownNONEPOrtdisable VLANdisable}] [THRASHTimeout={None1..86400}]

Description This command sets the speed for a specific trunk group on the switch. The switch supports static 802.3ad link aggregation, and port trunking is also called link aggregation.

The thrashaction parameter specifies the action the router or switch takes when it detects MAC address thrashing on a trunk. Thrashing occurs when one or more ports or trunks repeatedly learn the same MAC addresses, for example, as a result of a network loop. The router or switch applies the trunk’s thrashaction to all ports in the trunk.

Take care with the thrashaction parameter because misuse can impair your network operation.

Set the thrashaction parameter to:

■none to apply no thrash limiting on the trunk.

■learndisable to disable MAC address learning on all ports in the thrashing trunk, until the period specified with the thrashtimeout parameter has elapsed. The default is learndisable.

Software Version 2.8.1 C613-10477-00 REV B