esi (Bridge domain view)

Function

The esi command configures an ESI for a bridge domain (BD).

The undo esi command deletes an ESI of a BD.

By default, no ESI is configured for BDs.

Format

esi esi

undo esi esi

undo esi

Parameters

Parameter	Description	Value
esi	Specifies an ESI.	The value is in the format of xxxx.xxxx.xxxx.xxxx.xxxx, where x is a hexadecimal integer ranging from 0 to F. The value must start with 00 and cannot be all 0s.

Parameter

Description

Value

esi

Specifies an ESI.

The value is in the format of xxxx.xxxx.xxxx.xxxx.xxxx, where x is a hexadecimal integer ranging from 0 to F. The value must start with 00 and cannot be all 0s.

Views

Bridge domain view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

In a DCI scenario, when EVPN is used to transmit ARP or MAC routes, run the esi command to configure an ESI for the BD of a PE connecting to a DC gateway. The routes then carry the ESI to allow the PE to detect the other PEs connecting to the same DC gateway. The ESIs are the same for the BDs of the PEs connecting to the same DC gateway and are different for the BDs of the PEs connecting to different DC gateways.

Prerequisites

Run the esi command successfully, the following conditions are needed:

The BD is in the Up state.
The BD has been bound to an EVPN instance using evpn binding vpn-instance command.
The BD has been associated with a VNI using vxlan vni command or associated with UMR using the umr originate command.
If UMR is enabled in the BD where ESI is configured, the evpn redundancy-mode single-active command cannot be run on the ESI.

Precautions

An ESI identifies a CE to which a PE connects. Using different ESIs on the same PE is recommended.

Example

# Configure an ESI for BD 10.

<HUAWEI> system-view
[~HUAWEI] evpn vpn-instance evrf1 bd-mode
[*HUAWEI-evpn-instance-evrf1] route-distinguisher 100:1
[*HUAWEI-evpn-instance-evrf1] vpn-target 1:1
[*HUAWEI-evpn-instance-evrf1] quit
[*HUAWEI] bridge-domain 10
[*HUAWEI-bd10] vxlan vni 100 split-horizon-mode
[*HUAWEI-bd10] evpn binding vpn-instance evrf1
[*HUAWEI-bd10] esi 0022.1002.1002.1002.1001

# Configure an ESI for BD 10 on which UMR is enabled.

<HUAWEI> system-view
[~HUAWEI] evpn vpn-instance evrf1 bd-mode
[*HUAWEI-evpn-instance-evrf1] route-distinguisher 100:1
[*HUAWEI-evpn-instance-evrf1] vpn-target 1:1
[*HUAWEI-evpn-instance-evrf1] quit
[*HUAWEI] bridge-domain 10
[*HUAWEI-bd10] evpn binding vpn-instance evrf1
[*HUAWEI-bd10] umr originate
[*HUAWEI-bd10] esi 0022.1002.1002.1002.1001