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.
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 |
Lastly you can specify the link speed.
[edit interfaces] gk@switch# set interface-name aggregated-ether-options link-speed 10g |
It is time to specify the members that will be in the bundle.
[edit interfaces] user@switch# set ge-0/0/1 ether-options 802.3ad aex [edit interfaces] user@switch# set ge-0/0/2 ether-options 802.3ad aex |
You can also configura the vlan.
[edit vlans] user@switch# set gklan vlan-id 20 |
After configuration of the aggregated ethernet interface, let’s configure the lacp protocol.
[edit interfaces] gk@switch# set aex aggregated-ether-options lacp active |
If you woldu like to check your configuration, use the below show commands under the related hierarchy:
[edit chassis]
user@switch# show
aggregated-devices {
ethernet {
device-count 1;
}
}
|
[edit interfaces ae0]
user@switch#show
aggregated-ether-options {
lacp {
active;
}
}
|
[edit interfaces]
user@switch# show
ge-0/0/1
ether-options {
802.3ad ae0
}
}
ge-0/0/2
ether-options {
802.3ad ae0
}
|
And you can also check the bundle link status with the port status by the following command.
user@switch> show interfaces terse | match ae0 ge-0/0/1.0 up up aenet -->ae0.0 ge-0/0/2.0 up up aenet -->ae0.0 ae0 up up ae0.0 up up eth-switch |
I hope this link aggregation article will be helpful for you. To learn about Alcatel-Lucent Service Router’s link aggregation, go to the next part of this article series.
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)
