Juniper EX9200 Features Manual page 252

Spanning-Tree Protocols Feature Guide for EX9200 Switches
Table 25: Components of the Topology for Configuring Loop Protection on EX Series
Switches (continued)
Property
Switch 2
Switch 3
Configuration
CLI Quick
Configuration
Step-by-Step
Procedure
Results
Verification
236
Settings
Switch 2 has the root port
Switch 3 is connected to Switch 1 through interface
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 MSTP topologies at the [
To configure loop protection on an interface:
To quickly configure loop protection on interface
[edit]
set protocols rstp interface ge-0/0/6 bpdu-timeout-action block
To configure loop protection:
Configure interface ge-0/0/6
1.
[edit protocols rstp]
user@switch# set interface ge-0/0/6 bpdu-timeout-action block
Check the results of the configuration:
user@switch> show configuration protocols rstp
interface ge-0/0/6 {
bpdu-timeout-action {
block;
}
}
To confirm that the configuration is working properly, perform these tasks:
Displaying the Interface State Before Loop Protection Is Triggered on page 237
Verifying That Loop Protection Is Working on an Interface on page 237
.
ge-0/0/7
ge-0/0/6
edit protocols mstp
:
ge-0/0/6
on Switch 3:
Copyright © 2017, Juniper Networks, Inc.
.
] hierarchy level.