Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 801
spanning-tree pvst vlan Command Example, shutdown-on-violation, priority
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cost number priority value (OPTIONAL) Enter the keyword cost followed by the port cost value. Range: 1 to 200000 Defaults: 100 Mb/s Ethernet interface = 200000 1-Gigabit Ethernet interface = 20000 10-Gigabit Ethernet interface = 2000 Port Channel interface with one 100 Mb/s Ethernet = 200000 Port Channel interface with one 1-Gigabit Ethernet = 20000 Port Channel interface with one 10-Gigabit Ethernet = 2000 Port Channel with two 1-Gigabit Ethernet = 18000 Port Channel with two 10-Gigabit Ethernet = 1800 Port Channel with two 100-Mbps Ethernet = 180000 (OPTIONAL) Enter the keyword priority followed the Port priority value in increments of 16. Range: 0 to 240 Default: 128 Defaults Not Configured Command Modes INTERFACE Command History Version 8.3.5.0 Version 8.2.1.0 Version 7.6.1.0 Version 7.5.1.0 Version 7.4.1.0 Version 6.2.1.1 Introduced on S55 Introduced hardware shutdown-on-violation option Support added for S-Series Support added for C-Series Added the optional Bridge Port Data Unit (BPDU) guard Introduced Usage Information The BPDU guard option prevents the port from participating in an active STP topology in case a BPDU appears on a port unintentionally, or is mis-configured, or is subject to a DOS attack. This option places the port into an error disable state if a BPDU appears, and a message is logged so that the administrator can take corrective action. Note: A port configured as an edge port, on a PVST switch, will immediately transition to the forwarding state. Only ports connected to end-hosts should be configured as an edge port. Consider an edge port similar to a port with a spanning-tree portfast enabled. Example If shutdown-on-violation is not enabled, BPDUs will still be sent to the RPM CPU. Figure 31-6. spanning-tree pvst vlan Command Example Force10(conf-if-gi-1/1)#spanning-tree pvst vlan 3 cost 18000 Force10(conf-if-gi-1/1)#end Force10(conf-if-gi-1/1)#show config ! interface GigabitEthernet 1/1 no ip address switchport spanning-tree pvst vlan 3 cost 18000 no shutdown Force10(conf-if-gi-1/1)#end Force10# Per-VLAN Spanning Tree plus (PVST+) | 801