ECS4110-28T_Management Guide

C HAPTER 35 | Spanning Tree Commands
– 1103 –
DEFAULT SETTING
0
COMMAND MODE
MST Configuration
COMMAND USAGE
The MST region name (page 1102) and revision number are used to
designate a unique MST region. A bridge (i.e., spanning-tree compliant
device such as this switch) can only belong to one MST region. And all
bridges in the same region must be configured with the same MST
instances.
EXAMPLE
Console(config-mstp)#revision 1
Console(config-mstp)#
RELATED COMMANDS
name (1102)
spanning-tree
bpdu-filter
This command allows you to avoid transmitting BPDUs on configured edge
ports that are connected to end nodes. Use the no form to disable this
feature.
SYNTAX
[no] spanning-tree bpdu-filter
DEFAULT SETTING
Disabled
COMMAND MODE
Interface Configuration (Ethernet, Port Channel)
COMMAND USAGE
◆ This command stops all Bridge Protocol Data Units (BPDUs) from being
transmitted on configured edge ports to save CPU processing time. This
function is designed to work in conjunction with edge ports which
should only connect end stations to the switch, and therefore do not
need to process BPDUs. However, note that if a trunking port connected
to another switch or bridging device is mistakenly configured as an
edge port, and BPDU filtering is enabled on this port, this might cause a
loop in the spanning tree.
◆ Before enabling BPDU Filter, the interface must first be configured as an
edge port with the spanning-tree edge-port command.