Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1052

Complete Software Guide for Junos
Overview and Topology
Configuring LACP for the LAGs on the Virtual Chassis Access Switch
CLI Quick
Configuration
Step-by-Step
Procedure
Results
948
®
OS for EX Series Ethernet Switches, Release 10.4
This example assumes that you are familiar with "Example: Configuring Aggregated
Ethernet High-Speed Uplinks Between an EX4200 Virtual Chassis Access Switch and
an EX4200 Virtual Chassis Distribution Switch" on page 940. The topology in this example
is exactly the same as the topology in that other example. This example shows how to
use LACP to enhance the LAG functionality.
LACP exchanges are made between actors (the transmitting link) and partners (the
receiving link). The LACP mode can be either active or passive.
NOTE: If the actor and partner are both in passive mode, they do not exchange
LACP packets, which results in the aggregated Ethernet links not coming up.
By default, LACP is in passive mode. To initiate transmission of LACP packets
and responses to LACP packets, you must enable LACP in active mode.
By default, the actor and partner send LACP packets every second. You can configure
the interval at which the interfaces send LACP packets by including the periodic statement
at the [edit interfaces interface-name aggregated-ether-options lacp]
The interval can be fast (every second) or slow (every 30 seconds).
To configure LACP for the access switch LAGs, perform these tasks:
To quickly configure LACP for the access switch LAGs, copy the following commands
and paste them into the switch terminal window:
[edit]
set interfaces ae0 aggregated-ether-options lacp active periodic fast
set interfaces ae1 aggregated-ether-options lacp active periodic fast
To configure LACP for Host-A LAGs
Specify the aggregated Ethernet options for both bundles:
1.
[edit interfaces]
user@Host-A#set ae0 aggregated-ether-options lacp active periodic fast
user@Host-A#set ae1 aggregated-ether-options lacp active periodic fast
Display the results of the configuration:
[edit interfaces]
user@Host-A# show
ae0 {
aggregated-ether-options {
lacp {
active;
periodic fast;
}
}
}
and :
ae0 ae1
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hierarchy level.