1-30Configuring the Timeout Time FactorRefer to Configuring the Timeout Time Factor.Configuring the Maximum Transmitting Rate on the Current PortRefer to Configuring the Maximum Transmitting Rate on the Current Port.Configuring a Port as an Edge PortRefer to Configuring the Current Port as an Edge Port.Configuring the Path Cost for a PortThe path cost parameter reflects the rate of the link connected to the port. For a port on anMSTP-enabled switch, the path cost may be different in different MSTIs. You can enable flows ofdifferent VLANs to travel along different physical links by configuring appropriate path costs on ports, sothat VLAN-based load balancing can be implemented.Path cost of a port can be determined by the switch or through manual configuration.Standards for calculating path costs of portsCurrently, a switch can calculate the path costs of ports based on one of the following standards:z dot1d-1998: Adopts the IEEE 802.1D-1998 standard to calculate the default path costs of ports.z dot1t: Adopts the IEEE 802.1t standard to calculate the default path costs of ports.z legacy: Adopts the proprietary standard to calculate the default path costs of ports.Follow these steps to specify the standard for calculating path costs:To do... Use the command... RemarksEnter system view system-view —Specify the standard forcalculating the default pathcosts of the links connected tothe ports of the switchstp pathcost-standard{ dot1d-1998 | dot1t | legacy }OptionalBy default, the legacy standardis used to calculate the defaultpath costs of ports.Table 1-7 Transmission rates vs. path costsRate Operation mode(half-/full-duplex) 802.1D-1998 IEEE 802.1t Latencystandard0 — 65,535 200,000,000 200,00010 MbpsHalf-duplex/Full-duplexAggregated link 2 portsAggregated link 3 portsAggregated link 4 ports1009595952,000,0001,000,000666,666500,0002,0001,8001,6001,400100 MbpsHalf-duplex/Full-duplexAggregated link 2 portsAggregated link 3 portsAggregated link 4 ports19151515200,000100,00066,66650,000200180160140
