configure stpd flush-method

configure stpd flush-method [vlan-and-port | port-only]

Description

Configures the method used by STP (Spanning Tree Protocol) to flush the FDB (forwarding database) during a topology change.

Syntax Description

vlan-and-port Specifies a VLAN (Virtual LAN) and port combination flush method.
port-only Specifies a port flush method.

Default

The default flush method is vlan-and-port.

Usage Guidelines

For scaled up configurations where there are more than 1000 VLANs and more than 70 ports participating in STP, the number of messages exchanged between STP/FDB/HAL modules can consume a lot of system memory during an STP topology change using the default configuration for flush method. In such situations, setting the flush method to “port-only” can help reduce the system memory consumption.

Example

The following command sets the flush method to port-only:

configure stpd flush-method port-only

History

This command was available in ExtremeXOS 12.4.5.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.