Dell Force10 MXL Blade - Configure an Edgeport

410 | Per-VLAN Spanning Tree Plus (PVST+)
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To change the port cost or priority of an interface, use the following commands:
To view the values for interface PVST+ parameters, use the
show spanning-tree pvst command
(Figure 23-4).
Configure an EdgePort
The EdgePort feature enables interfaces to begin forwarding traffic approximately 30 seconds sooner. In
this mode, an interface forwards frames by default until it receives a BPDU that indicates it should behave
otherwise; it does not go through the Learning and Listening states.
The
bpduguard shutdown-on-violation option causes the interface hardware to be shutdown when it receives a
BPDU. Only after you implement the
bpduguard option is the interface placed in an Error Disabled state.
When receiving the BPDU, the physical interface remains up and spanning-tree drops
packets in the
hardware after a BPDU violation. BPDUs are dropped in the software after receiving the BPDU violation.
This feature is the same as PortFast mode in Spanning Tree.
The enabling of BPDU Filtering stops sending and receiving of BPDUs on the port fast enabled ports.
When both BPDU guard and BPDU filter are enabled on the port, BPDU filter takes the higher precedence.
By default, BPDU filtering on an interface is disabled.
To enable EdgePort on an interface, use the following command:
To view the EdgePort status of each interface, use the
show spanning-tree pvst command (Figure 23-4).
Note: The FTOS implementation of PVST+ uses IEEE 802.1s costs as the default costs. Other
implementations use IEEE 802.1d costs as the default costs. If you are using Dell Force10 systems in a
multi-vendor network, verify that the costs are values you intended.
Task Command Syntax Command Mode
Change the port cost of an interface.
Range: 0 to 200000
Default: refer to Table 23-2.
spanning-tree pvst vlan cost
INTERFACE
Change the port priority of an interface.
Range: 0 to 240, in increments of 16
Default: 128
spanning-tree pvst vlan priority
INTERFACE
Caution: Configure EdgePort only on links connecting to an end station. EdgePort can cause loops if you enable it
on an interface connected to a network.
Task Command Syntax Command Mode
Enable EdgePort on an interface.
spanning-tree pvst edge-port
[bpduguard [shutdown-on-violation]
| bpdufilter]
INTERFACE