peer advertise-entropy-label

Function

The peer advertise-entropy-label elc command enables a device to add the entropy label of the entropy label capability (ELC) type to the BGP routes to be advertised to a specified peer.

The undo peer advertise-entropy-label command cancels the existing configuration.

By default, a device advertises BGP routes without the entropy label to a peer.

Format

peer peerIpv4Addr advertise-entropy-label elc [ padding paddingValue ]

peer peerIpv4Addr advertise-entropy-label disable

undo peer peerIpv4Addr advertise-entropy-label elc [ padding paddingValue ]

undo peer peerIpv4Addr advertise-entropy-label disable

Parameters

Parameter	Description	Value
peerIpv4Addr	Specifies the IPv4 address of a peer.	The value is in dotted decimal notation.
padding paddingValue	Padding format of the ELC attribute.	The value is a hexadecimal string containing 1 to 32 characters (16 hexadecimal numbers). It cannot contain spaces, and can only contain uppercase letters (A to F) and digits (0 to 9), and the length must be an even number.
disable	Disable the entropy label advertisement capability.	-

Parameter

Description

Value

peerIpv4Addr

Specifies the IPv4 address of a peer.

The value is in dotted decimal notation.

padding paddingValue

Padding format of the ELC attribute.

The value is a hexadecimal string containing 1 to 32 characters (16 hexadecimal numbers). It cannot contain spaces, and can only contain uppercase letters (A to F) and digits (0 to 9), and the length must be an even number.

disable

Disable the entropy label advertisement capability.

Views

BGP-IPv4 unicast address family view, BGP-Labeled address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

If load balancing is uneven on a network, you can run the peer advertise-entropy-label elc command to enable a device to add the entropy label of the ELC type to the BGP routes to be advertised to a specified peer. This command together with the peer entropy-label command helps equalize and improve the performance of load balancing. The standard that the peer advertise-entropy-label elc command complies with does not define the format of a padding value. To ensure flexible padding adjustment, specify the padding parameter to set a padding value for the entropy label as required. When changing the next hop of a route received from a peer, the device replaces the padding value carried the route with the padding value specified using the peer advertise-entropy-label elc command.

After a peer is added to a peer group, the peer inherits the configuration of the peer group. If the capability of adding the entropy label of the ELC type to the BGP routes to be advertised is enabled on the local device and for the peer group, run the peer advertise-entropy-label disable command on the local device if this newly added peer does not need to have this capability.

Example

# Enable a device to add the entropy label to the BGP routes to be advertised in the IPv4 labeled address family.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] peer 10.1.1.1 as-number 200
[*HUAWEI-bgp] ipv4-family labeled-unicast
[*HUAWEI-bgp-af-ipv4-labeled] peer 10.1.1.1 enable
[*HUAWEI-bgp-af-ipv4-labeled] peer 10.1.1.1 advertise-entropy-label elc

# Enable a device to add the entropy label to the BGP routes to be advertised in the IPv4 unicast address family.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] peer 10.1.1.1 as-number 200
[*HUAWEI-bgp] ipv4-family unicast
[*HUAWEI-bgp-af-ipv4] peer 10.1.1.1 enable
[*HUAWEI-bgp-af-ipv4] peer 10.1.1.1 label-route-capability
[*HUAWEI-bgp-af-ipv4] peer 10.1.1.1 advertise-entropy-label elc