Netgear XCM8806 Chassis Hardware Installation Guide - Page 758

NETGEAR 8800 Chassis Switch CLI Manual The auto port cost of a trunk port is calculated based on number member ports in the trunk port. Link up and down of the member port does not affect the trunk port cost, thus it does not trigger topology change. Only adding or removing a member port to/from the trunk port causes auto trunk port cost to change. Also, by so configuring a static trunk port cost, the value is frozen regardless of the number of member ports in the trunk port. Example The following command configures a cost of 100 to slot 2, ports 1 through 5 in STPD s0: configure stpd s0 ports cost 100 2:1-2:5 configure stpd ports edge-safeguard disable configure {stpd} ports edge-safeguard disable {bpdu-restrict} {recovery-timeout {}} Description Disables the edge safeguard loop prevention on the specified RSTP or MSTP edge port. Syntax Description stpd_name port_list bpdu-restrict recovery-timeout seconds Specifies an STPD name on the switch. Specifies one or more edge ports. Disables port as soon as a BPDU is received. Time after which the port will be re-enabled. Specifies the time in seconds. The range is 60 to 600. The default is 300. Default By default, this feature is disabled. Usage Guidelines This command applies only to ports that have already been configured as edge ports. Loop prevention and detection on an edge port configured for RSTP or MSTP is called edge safeguard. An edge port configured with edge safeguard immediately enters the forwarding state and transmits BPDUs. If you disable this feature, the edge port enters the forwarding state but no longer transmits BPDUs unless a BPDU is received by that edge port. This is the default behavior. Recovery time starts as soon as the port becomes disabled. If no recovery-timeout is specified, the port is permanently disabled. BPDU restrict can be disabled using the configure stpd ports bpdu-restrict disable command. 758 | Chapter 17. STP Commands