Example: Configuring Layer 2 Circuit Switching Protection - Juniper ACX1000 Configuration Manual

Example: Configuring Layer 2 Circuit Switching Protection

Requirements
Overview
Copyright © 2017, Juniper Networks, Inc.
[edit logical-systems logical-system-name protocols l2circuit local-switching interface
interface-name]
NOTE: ACX Series routers do not support the
hierarchy level.
Unlike Layer 2 circuit protect interfaces (see Example: Configuring Layer 2 Circuit Protect
Interfaces), which provide traffic protection for paths configured between the PE routers
and CE routers, Layer 2 circuit switching protection provides traffic protection for the
paths configured between the PE routers. In the event the path used by a Layer 2 circuit
fails, traffic can be switched to an alternate path (or protection path). Switching protection
is supported for locally switched Layer 2 circuits and provides 1 to 1 protection for each
Layer 2 circuit interface.
When you enable Layer 2 circuit switching protection, each Layer 2 circuit interface
requires the following paths:
Working path—Used by the Layer 2 circuit when working normally.
Protection path—Used by the Layer 2 circuit when the working path fails.
Requirements on page 783
Overview on page 783
Configuration on page 784
This example uses the following hardware and software components:
ACX5000 Series Routers
Junos OS Release 15.1X54–D60
Each working path can be configured using a pseudowire configured through an
intermediate PE router (as shown in
failure protection for the traffic flowing between the PE routers. Failures are detected
through the link down trap.
NOTE: Non-stop routing (NSR) and graceful routing engine switchover
(GRES) do not support Layer 2 circuit switching protection.
Chapter 25: Configuring Layer 2 and Layer 3 Services
[edit logical-systems]
Figure 43 on page 784). The protection path provides
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