Link Aggregation – Part 3 (LACP Configuration on Juniper Devices)


LACP Configuration on Juniper Devices

We have talked about LACP in the previous articles on Cisco Routers. Here we will focus on how to do this configuration on Juniper devices on ethernet links. As you know the protocol is the same, but there are some configuration differencies between different vendor’s devices.

By the way, we do not need to use LACP for ethernet bundlings, this is only a way with LACP protocol.

By default, there can be also maximum 8 ports in a bundle on Juniper devices. This can be changed by commands.

The typical usage of the LAG is to aggregate trunk links, between the access switch and the distribution switch.

Link Aggregation Example Topology on Juniper, JUNOS

Link Aggregation on Juniper Devices

In Juniper swithes, for aggregated links, firstly we need to configure, aggregated Etnernet interfaces.

[edit chassis]
gk@switch# set aggregated-devices interfaces device-count 1

After creating aggregated Ethernet interfaces, it is time to define minimum link count while the bundle is up. To do this use the below command:

[edit interfaces]
gk@switch#  set  interface-name  aggregated-ether-options  minimum-links  3

Link Aggregation – Part 1 (Link Aggregation Control Protocol, LACP)
Link Aggregation – Part 2 (LACP Configuration on Cisco Devices)
Link Aggregation – Part 3 (LACP Configuration on Juniper Devices)
Link Aggregation – Part 4 (LAG Configuration on Alcatel-Lucent Devices)

2 Responses to “Link Aggregation – Part 3 (LACP Configuration on Juniper Devices)”

  • Paulzh / Reply

    Hi, Gokhan

    This article is absolutely a good piece to get the general meaning of this concept.

    I want to know why the speed was set to 10g as we have only 2 ge port validated in the AE port. This may waste your time to answer.


  • juntak / Reply

    should I give IP Address to port LAG?

Leave a Reply