D-Link DXS-3600-EM-8T CLI Guide - Page 574

DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide no spanning-tree externalcost Parameters COST Specifies the external cost of interface. Valid values are from 0 to 200000000 and 0 means auto. Default Command Mode Command Default Level Usage Guideline The default port cost is calculated by port speed. Interface Configuration Mode. Level: 8 This command is used to configure the path cost between MST regions from the transmitting Bridge to the CIST Root Bridge. Example This example shows how to configure the external path cost. DXS-3600-32S#configure terminal DXS-3600-32S(config)#interface tenGigabitEthernet 1/0/1 DXS-3600-32S(config-if)#spanning-tree externalcost 22 Success DXS-3600-32S(config-if)# 57-17 spanning-tree portfast This command is used to enable fast forwarding mode where the interface is immediately put into the forwarding state upon linkup without waiting for the timer to expire. spanning-tree portfast [disabled] Parameters disabled Specifies to disable the portfast on the interface. Default Command Mode Command Default Level Usage Guideline The default vaule is disabled. Interface Configuration Mode. Level: 8 You should use this command only with interfaces that connect to end stations; otherwise, an accidental topology loop could cause a data-packet loop and disrupt the switch and network operation. An interface with portfast mode enabled is moved directly to the spanning-tree forwarding state when linkup occurs without waiting for the standard forward-time delay. Example This example shows how to configure the portfast state. DXS-3600-32S#configure terminal DXS-3600-32S(config)#interface tenGigabitEthernet 1/0/1 DXS-3600-32S(config-if)#spanning-tree portfast Success DXS-3600-32S(config-if)# 566