configure stpd ports loop-protect partner

configure stpd stpd_name ports loop-protect partner [capable | incapable] port_list


Configures whether the link partner is capable of the loop protect feature.

Syntax Description

stpd_name Specifies an STPD name on the switch.
capable The link partner supports the loop protect feature.
incapable The link partner does not support the loop protect feature.
port_list Specifies one or more ports or slots and ports.


By default, this command is set to incapable.

Usage Guidelines

Ports work in two loop protect operational modes:
  • If the port is set to capable, the port works in full mode.
  • If the port is set to incapable, the port works limited mode.

In full mode, when RSTP/MSTP BPDUs are received on a point-to-point link and the port is designated, a loop protect timer is set to three times the hello time. When this timer expires, the port is moved to the blocking state. Limited mode adds the requirement that the flags field in the BPDU indicates a root role.


The following example configures loop protect partner capability to "capable" for port 1:10 in the STP domain r1:

configure stpd r1 ports loop-protect partner capable 1:10


This command was first available in ExtremeXOS 15.7.1.

Platform Availability

This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, X870, 5320, 5420, and 5520 series switches.