esi

Sets the Ethernet Segment ID (ESI) value, which is used to uniquely identify the client for the MCT client, or configures an auto-generated ESI value for a port channel client interface running LACP.

Syntax

esi {HH:HH:HH:HH:HH:HH:HH:HH:HH | auto lacp }

no esi

Parameters

HH:HH:HH:HH:HH:HH:HH:HH:HH: Specifies the 9-octect ESI value. Enter HH in hexadecimal format.
auto lacp: Configures an auto-generated ESI value for a port channel client interface running LACP.

Modes

Cluster client configuration mode

Cluster client PW configuration mode (SLX 9540 and SLX 9640 devices only)

Usage Guidelines

Use the no form of the command to delete the ESI setting for the client.

Only one ESI is allowed under a client.

You must configure the same ESI value on both devices in an MCT cluster.

For an MCT client, the configuration of the ESI value creates the MCT client LAG.

The same ESI cannot be added under multiple client entries.

The esi auto lacp command is available only in cluster client configuration mode. When a client interface is a port channel and LACP is running on the port channel, MCT supports an automatically-generated ESI value, as defined in RFC 7432. This ESI is encoded as type 1, as follows:

1-byte ESI type = 1
9-byte ESI value = 6-byte LACP system MAC address of the client followed by the 2-byte LACP port key, and then a 1-byte 0x00

The manually configured ESI uses type 0.

Examples

The following example shows the setting of the ESI value for the cluster client.

device(config)# cluster MCT1 1
device(config-cluster-1)# client MCT1-client 200
device(config-cluster-client-200)# esi 00.a1.b2.c3.d4.e5.f6.89.00

The following example shows the configuration of an auto-generated ESI for the cluster client.

device(config)# cluster MCT1 1
device(config-cluster-1)# client MCT1-client 200
device(config-cluster-client-200)# esi auto lacp

On the SLX 9540 and SLX 9640 devices, the following example shows the setting of the ESI for the cluster PW client.

device(config)# cluster MCT1 1
device(config-cluster-1)# client-pw
device(config-cluster-client-pw)# esi 01:02:03:04:05:06:07:08:0a