Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1905

Configuration
CLI Quick
Configuration
Step-by-Step
Procedure
Results
Verification
Purpose
Action
Copyright © 2010, Juniper Networks, Inc.
CAUTION: When configuring BPDU protection on a non-STP configured
switch connected to an STP-configured switch, be careful that you do not
configure BPDU protection on
being received on interfaces (such as a trunk interface) that should be
receiving BPDUs from an STP-configured switch.
To configure BPDU protection on the interfaces:
To quickly configure BPDU protection on Switch 2, copy the following commands and
paste them into the switch terminal window:
[edit]
set ethernet-switching-options bpdu-block interface ge-0/0/5
set ethernet-switching-options bpdu-block interface ge-0/0/6
To configure BPDU protection:
Configure interface
1. ge-0/0/5
[edit ethernet-switching-options]
user@switch# set bpdu-block interface ge-0/0/5
user@switch# set bpdu-block interface ge-0/0/6
Check the results of the configuration:
user@switch> show ethernet-switching-options
bpdu-block {
interface ge-0/0/5.0;
interface ge-0/0/6.0;
}
To confirm that the configuration is working properly, perform these tasks:
Displaying the Interface State Before BPDU Protection Is Triggered on page 1801
Verifying That BPDU Protection Is Working Correctly on page 1802
Displaying the Interface State Before BPDU Protection Is Triggered
Before BPDUs are being received from the PCs connected to interface
interface , confirm the interface state.
ge-0/0/6
Use the operational mode command:
user@switch> show ethernet-switching interfaces
Interface State VLAN members
ge-0/0/0.0 down default
ge-0/0/1.0 down default
ge-0/0/2.0 down default
ge-0/0/3.0 up default
Chapter 71: Examples of Spanning-Tree Protocols Configuration
interfaces. Doing so could prevent BPDUs
all
and interface on Switch 2:
ge-0/0/6
Blocking
unblocked
unblocked
unblocked
unblocked
ge-0/0/5 and
1801