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Static cluster link aggregation

December 7, 2020

Contributed by:

C S

You must configure a static cluster LA channel on the cluster IP address and on the external connecting device. If possible, configure the upstream switch to distribute traffic based on IP address or port instead of MAC address.

To configure a static cluster LA channel by using the CLI

Log on to the cluster IP address.

Note

Make sure that you configure the cluster LA channel on the cluster IP address before configuring link aggregation on the external switch. Otherwise, the switch forwards traffic to the cluster even though the cluster LA channel is not configured. It can lead to loss of traffic.
Create a cluster LA channel.
```
add channel <id> -speed <speed>
```
Example
```
add channel CLA/1 -speed 1000
```
Note

You must not specify the speed as AUTO. Rather, you must explicitly specify the speed as 10, 100, 1000, or 10000. Only interfaces that have the speed matching the <speed> attribute in the cluster LA channel are added to the active distribution list.
Bind the required interfaces to the cluster LA channel. Make sure that the interfaces are not used for the cluster backplane.
```
bind channel <id> <ifnum>
```
Example
```
bind channel CLA/1 0/1/2 1/1/2 2/1/2
```
Verify the configurations.
```
show channel <id>
```
Example
```
show channel CLA/1
```
Note

You can bind the cluster LA channel to a VLAN by using the bind vlan command. The interfaces of the channel are automatically bound to the VLAN.

Configure static LA on the external switch. The following sample configurations are provided for the Cisco® Nexus 7000 C7010 Release 5.2(1). Similar configurations must be performed on other switches.

Global config:
Configure terminal

Interface level config:

interface Ethernet2/47
switchport
switchport access vlan 10
channel-group 7 mode on
no shutdown

interface Ethernet2/48
switchport
switchport access vlan 10
channel-group 7 mode on
no shutdown

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Static cluster link aggregation

December 7, 2020

Contributed by:

C S

December 7, 2020

Contributed by:

C S

Static cluster link aggregation

To configure a static cluster LA channel by using the CLI

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