Before you begin
The MTU and egress configuration must be same on all ports
prior to configuring a LAG. If the Egress configuration is different, take the following
steps:
- Remove the desired ports from the
Egress they are associated with.
- Create the LAG and add the LAG
back into the appropriate Egress.
About this task
After you create a port channel, it
is available for selection when you create ingress group and egress. 
Note
- The fields that are available
for creating a port channel vary by the device type you are
configuring.
- LACP LAG is supported for 9920.
- For SLX devices, static LAG
type is selected by default.
- All configurations are
reverted when a port channel deployment fails. However, a LAG is created and
deleted immediately, and the events are captured in the device logs.
Procedure
-
In the Navigation menu, select
Device
Inventory.
-
In the Devices page, click anywhere in the
required device row except the Actions column (
)
to proceed to the device Overview page.
-
In the Device Config menu,
select .
-
Select Add Port
Channel.
-
(MLX only) In the Port Channel Name
field, enter a unique name for the port channel.
-
(9920 and SLX) In the
Port Channel
ID field, enter a unique numeric ID.
No two port channels can have
the same ID.
-
In the Lag Speed field,
select the speed for the ports that you will select in step 9.
-
In the Description
field, provide enough information to help you identify the port channel.
-
In the Ports field,
select at least one port from the list.
The ports in the list will be
of the speed that you selected in step 7. A port can be a member of only one
port channel. Ports that are not in the list are either already added to another
port channel or are operating at a speed that is different from the selection in
step 7.
-
(SLX and 9920 only) In the MTU field, enter
the maximum transmission unit for packets that pass through the ports in the
channel.
(SLX only) If the Port Speed is
configured as auto, but not connected, the Port Speed must be updated manually
to refresh the list of ports.
-
(MLX only) In the Primary Port
field, select one of the member ports.
-
In the Minimum Link
field, select or enter the minimum number of interfaces that the port channel
requires to be active.
-
(9920 only) In the Load Balance
Algorithm field, select a load-balancing method or select
None.
- src-dst-ip-l4-port: The source and destination IP Layer
4 ports method is the default load-balancing method.
- src-dst-ip-l4-port-tid: The source and destination IP
Layer 4 ports method with tunnel ID.
-
Select Enable to change
the port channel admin status to Up.
When you select this field, you
initiate the no
shutdown command on the device, which changes the admin and
operating status. When the field is not selected, the shutdown command
runs on the port channel and the admin status changes to Down.
-
Select the Lag Type.
-
(MLX and SLX only) Select
Loopback to configure the port channel as a loopback interface.
A loopback is a virtual
interface that a device uses to communicate with itself. A loopback interface
cannot be used as an egress interface.
-
Select Save.
