Lacp Individual; Lacp Minimum Links Option - Lenovo RackSwitch G8264CS Application Manual

LACP Individual

LACP Minimum Links Option

© Copyright Lenovo 2017
When the system is initialized, all ports by default are in LACP off mode and are
assigned unique admin keys. To make a group of ports aggregable, you assign them
all the same admin key. You must set the port's LACP mode to active to activate
LACP negotiation. You can set other port's LACP mode to passive to reduce the
amount of LACPDU traffic at the initial LAG‐forming stage.
Use the following command to check whether the ports are aggregated:
RS 8264CS # show lacp information
Notes:
 If you configure LACP on ports with 802.1X network access control, make sure
the ports on both sides of the connection are properly configured for both LACP
and 802.1X.
 IEEE 802.1x and LACP cannot both be enabled on port 1.
Ports with LACP enabled (active or passive) are prevented by default from
forming individual links if they cannot join an LACP LAG. To override this
behavior, use the following commands:
RS 8264CS(config) # interface port <port no. or range>
RS 8264CS(config-if) # no lacp suspend-individual
This allows the selected ports to be treated as normal link‐up ports, which may
forward data traffic according to STP, Hot Links or other applications, if they do
not receive any LACPDUs.
To configure the LACP individual setting for all the ports in a static LACP LAG,
use the following commands:
RS 8264CS(config)# interface portchannel lacp <adminkey of the LAG>
RS 8264CS(config-PortChannel)# [no] lacp suspend-individual
Note: By default, external ports are configured with the command lacp
suspend-individual, while internal ports are configured with the command
no lacp suspend-individual.
For dynamic LAGs that require a guaranteed amount of bandwidth to be
considered useful, you can specify the minimum number of links for the LAG. If
the specified minimum number of ports is not available, the LAG link will not be
established. If an active LACP LAG loses one or more component links, the LAG
will be placed in the down state if the number of links falls to less than the specified
minimum. By default, the minimum number of links is 1, meaning that LACP
LAGs will remain operational as long as at least one link is available.
Chapter 9: Ports and Link Aggregation
159