Figure 39: Network Topology for Loop Protection
Table 219 on page 1571 shows the components that will be configured for loop protection.
Table 219: Components of the Topology for Configuring Loop Protection on EX Series Switches
Settings
Property
Switch 1 is the root bridge.
Switch 1
Switch 2 has the root port
ge-0/0/7
.
Switch 2
Switch 3 is connected to Switch 1 through interface
ge-0/0/6
.
Switch 3
A spanning-tree topology contains ports that have specific roles:
•
The root port is responsible for forwarding data to the root bridge.
•
The alternate port is a standby port for the root port. When a root port goes down, the
alternate port becomes the active root port.
•
The designated port forwards data to the downstream network segment or device.
This configuration example uses an RSTP topology. However, you also can configure
loop protection for STP or MSTP topologies at the [
edit protocols
(
mstp
|
stp
)] hierarchy
level.
Configuration
To configure loop protection on an interface:
CLI Quick
Configuration
To quickly configure loop protection on interface
ge-0/0/6
:
[edit]
set protocols rstp interface ge-0/0/6 bpdu-timeout-action block
1571
Copyright © 2010, Juniper Networks, Inc.
Chapter 65: Examples of Spanning-Tree Protocols Configuration
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...