Static Lacp Lags - Lenovo RackSwitch G8264 Application Manual

Static LACP LAGs

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ID is decided based on the first port that is aggregated in the group. Ports with this
LAG ID get aggregated and the other ports are placed in suspended mode. In the
configuration shown in Table
port 7 would be the LAG ID of the LAG. Port 9 would be placed in suspended
mode. When in suspended mode, a port transmits only LACP data units
(LACPDUs) and discards all other traffic.
A port may also be placed in suspended mode for the following reasons:
 When LACP is configured on the port but it stops receiving LACPDUs from the
partner switch.
 When the port has a different LAG ID because of the partner switch MAC or
port LACP key being different. For example: when a switch is connected to two
partners.
The LAG ID can be configured using the following command:
RS G8264(config)# portchannel <65‐128>> lacp key <adminkey of the LAG>
suspend­individual
LACP automatically determines which member links can be aggregated and then
aggregates them. It provides for the controlled addition and removal of physical
links for the link aggregation.
To prevent switch ports with the same admin key from forming multiple LAGs,
you can configure the LACP LAG as static. In a static LACP LAG, ports with the
same admin key, but with different LAG IDs, compete to get aggregated in a LAG.
The LAG ID for the LAG is decided based on the first port that is aggregated in the
group. Ports with this LAG ID get aggregated and the other ports are placed in
suspended mode. As per the configuration shown in Table 16 on page
7 gets aggregated first, then the LAG ID of port 7 would be the LAG ID of the LAG.
Port 8 will join the LAG while ports 9 and 10 would be placed in suspended mode.
When in suspended mode, a port transmits only LACP data units (LACPDUs) and
discards all other traffic.
A port may also be placed in suspended mode for the following reasons:
 When LACP is configured on the port but it stops receiving LACPDUs from the
partner switch.
 When the port has a different LAG ID because of the partner switch MAC or
port LACP key being different. For example: when a switch is connected to two
partners.
Static LACP LAGs are configured by associating the LACP admin key to a
portchannel ID within a dedicated LACP portchannel group range:
RS G8264(config)# portchannel lacp key <adminkey of the LAG>
A single LAG can have a maximum of 32 active ports at a given time.
16, if port 7 gets aggregated first, then the LAG ID of
Chapter 10: Ports and Link Aggregation
180, if port
181