Spanning-Tree - Dell Force10 Z9000 Reference Manual

Field
Guard Type
Example (Guard)
FTOS#show spanning-tree 0 guard
Interface
Name
--------- -------- --------- ----------
Gi 0/1 0
Gi 0/2 0
Gi 0/3 0

spanning-tree

Assigns a Layer 2 interface to STP instance 0 and configures a port cost or port priority, or enables loop guard, root
guard, or the Portfast feature on the interface.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax spanning-tree stp-id {cost cost | {loopguard | rootguard} |
portfast [bpduguard [shutdown-on-violation]] | priority
priority}
To disable Spanning Tree group on an interface, use the no spanning-tree stp-id
{cost cost | {loopguard | rootguard} | portfast [bpduguard
[shutdown-on-violation]] | priority priority} command.
Parameters
stp-id
cost
loopguard
rootguard
Description
Type of STP guard configured (Root, Loop, or BPDU guard).
Instance Sts
INCON(Root)
LIS
EDS (Shut)
Enter the STP instance ID. The range is 0.
cost Enter the keyword cost followed by a number as the cost. The range
is 1 to 65535. The defaults are:
•
•
•
•
•
•
(C-, S-, and E-Series TeraScale and S4810 only) Enter the keyword
loopguard to enable STP loop guard on a port or port-channel
interface.
(C-, S-, and E-Series TeraScale and S4810 only) Enter the keyword
rootguard to enable STP root guard on a port or port-channel
interface.
Guard type
Rootguard
Loopguard
Bpduguard
100 Mb/s Ethernet interface = 19.
1-Gigabit Ethernet interface = 4.
10-Gigabit Ethernet interface = 2.
Port Channel interface with 100 Mb/s Ethernet = 18.
Port Channel interface with 1-Gigabit Ethernet = 3.
Port Channel interface with 10-Gigabit Ethernet = 1.
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