Service Manual

Parameters
stp-id Enter the STP instance ID. The range is 0.
cost cost Enter the keyword cost then a number as the cost. The range is from 1 to 65535.
The defaults are:
• 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.
loopguard Enter the keyword loopguard to enable STP loop guard on a port or port-
channel interface.
rootguard Enter the keyword rootguard to enable STP root guard on a port or port-
channel interface.
portfast [bpduguard
[shutdown-on-viol
ation]]
Enter the keyword portfast to enable Portfast to move the interface into
Forwarding mode immediately after the root fails.
Enter the optional keyword bpduguard to disable the port when it receives a
BPDU.
Enter the optional keyword shutdown-on-violation to hardware disable an
interface when a BPDU is received and the port is disabled.
priority priority Enter keyword priority then a number as the priority. The range is from zero
(0) to 15. The default is 8.
Defaults cost = depends on the interface type; priority = 8
Command Modes INTERFACE
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.10.1 Introduced the loopguard and rootguard options on the S4810.
8.4.2.1 Introduced the loopguard and rootguard options on the E-Series TeraScale,
C-Series, and S-Series.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced the shutdown-on-violation option.
7.7.1.0 Introduced on the S-Series.
1434
Spanning Tree Protocol (STP)