Link Protection; Configuring Link Protection For Aggregated Ethernet Interfaces; Disabling Link Protection For Aggregated Ethernet Interfaces; Understanding The Algorithm Used To Hash Lag Bundle - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide

Link Protection

Understanding the Algorithm Used to Hash LAG Bundle

156
Link protection can be configured on AE interfaces to provide 1:1 link resiliency using LACP.
Primary and backup links can be configured within an AE bundle. The primary link is used
for all transit traffic and host generated traffic. The backup link is used when the primary
link fails.
Link protection is supported only when the AE bundles have no more than 2 member
links, one primary and another backup. LACP works in revertive link-protection mode by
default and can be configured to work in non-revertive mode.
NOTE: Link protection without LACP (static link protection on AE interfaces)
is not supported on all ACX Series routers. Link protection works as expected
with LACP configured on the AE bundle.
Configuring Link Protection for Aggregated Ethernet Interfaces on page 156
Disabling Link Protection for Aggregated Ethernet Interfaces on page 156

Configuring Link Protection for Aggregated Ethernet Interfaces

Aggregated Ethernet interfaces support link protection to ensure QoS on the interface.
To configure link protection:
Configure the options for an aggregated Ethernet interface.
1.
user@host# edit interfaces aex aggregated-ether-options
Configure the link protection mode.
2.
[edit interfaces aex aggregated-ether-options]
user@host# set link-protection

Disabling Link Protection for Aggregated Ethernet Interfaces

To disable link protection, issue the
user@host# delete interfaces aex aggregated-ether-options link-protection
ACX Series routers use a hashing algorithm to determine how to forward traffic over a
link aggregation group (LAG) bundle.
The hashing algorithm makes hashing decisions based on values in various packet fields,
as well as on some internal values like source port ID and source device ID. You can
configure some of the fields that are used by the hashing algorithm.
The hashing algorithm is used to make traffic-forwarding decisions for traffic entering a
LAG bundle.
configuration command.
delete interface revert aex
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