Reference Guide

Version 6.5.1.0 Introduced on the E-Series.
spanning-tree mstp edge-port
Configures the interface as an MST edge port and optionally a Bridge Protocol Data Unit (BPDU) guard.
C-Series, E-Series, S-Series, Z-Series
Syntax
spanning-tree mstp edge-port [bpduguard [shutdown-on-
violation]]
Parameters
mstp edge-port Enter the keyword mstp followed by the keywords edge-port to
configure the interface as a Multiple Spanning Tree edge port.
bpduguard (OPTIONAL) Enter the keyword portfast to enable Portfast to
move the interface into forwarding mode immediately after the root
fails. Enter the keyword
bpduguard to disable the port when it
receives a BPDU.
shutdown-
onviolation
(OPTIONAL) Enter the keywords shutdown-on-violation to
hardware disable an interface when a BPDU is received and the port
is disabled.
Command Modes INTERFACE
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.2.1.0 Introduced the hardware shutdown-on-violation option.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
Version 6.5.1.0 Introduced on the E-Series.
Usage
Information
On an MSTP switch, a port configured as an edge port immediately transitions to the
forwarding state. You should only configure ports connected to end-hosts as edge ports.
Consider an edge port similar to a port with spanning-tree portfast enabled.
If you do not enable shutdown-on-violation, BPDUs are still sent to the RPM CPU.
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