reset bgp evpn dampening (User view)

Function

The reset bgp evpn dampening command clears BGP route dampening information and releases suppressed routes.

Format

reset bgp evpn dampening

reset bgp evpn dampening { mac-route | prefix-route } prefix

Parameters

Parameter	Description	Value
mac-route	Specifies information about MAC advertisement routes.	-
prefix-route	Specifies information about prefix routes.	-
prefix	Specifies the prefix of an EVPN route.	An EVPN route prefix has the following formats: MAC advertisement route. The value is in the format of E:M:H-H-H:L:X.X.X.X or E:M:H-H-H:L: [X:X::X:X], where: E indicates the ID of the VLAN to which the MAC address belongs. M is fixed at 48, indicating the length of the MAC address. H-H-H indicates the MAC address. The value is a 12-digit hexadecimal number, in the format of H-H-H. Each H is 4 digits. If an H contains fewer than 4 digits, the left-most digits are padded with zeros. L is fixed at 0, indicating the mask length of the IP address corresponding to the MAC address. X.X.X.X indicates the IP address corresponding to the MAC address. Currently, this part can only be displayed as 0.0.0.0. X:X::X:X indicates the IPv6 address corresponding to the MAC address. IP Prefix route. The value is in the format of L:X.X.X.X:M or L:[X:X::X:X]:M, where: L is fixed at 0. X.X.X.X indicates the ip address of host routes. M indicates the mask length of host routes. X:X::X:X indicates the ipv6 address of host routes.

Parameter

Description

Value

mac-route

Specifies information about MAC advertisement routes.

prefix-route

Specifies information about prefix routes.

prefix

Specifies the prefix of an EVPN route.

An EVPN route prefix has the following formats:

MAC advertisement route. The value is in the format of E:M:H-H-H:L:X.X.X.X or E:M:H-H-H:L: [X:X::X:X], where:

E indicates the ID of the VLAN to which the MAC address belongs.
M is fixed at 48, indicating the length of the MAC address.
H-H-H indicates the MAC address. The value is a 12-digit hexadecimal number, in the format of H-H-H. Each H is 4 digits. If an H contains fewer than 4 digits, the left-most digits are padded with zeros.
L is fixed at 0, indicating the mask length of the IP address corresponding to the MAC address.
X.X.X.X indicates the IP address corresponding to the MAC address. Currently, this part can only be displayed as 0.0.0.0.
X:X::X:X indicates the IPv6 address corresponding to the MAC address.

IP Prefix route. The value is in the format of L:X.X.X.X:M or L:[X:X::X:X]:M, where:

L is fixed at 0.
X.X.X.X indicates the ip address of host routes.
M indicates the mask length of host routes.
X:X::X:X indicates the ipv6 address of host routes.

Views

User view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	execute

Usage Guidelines

Usage Scenario

Route dampening is enabled to solve the problem of route instability. In most situations, BGP EVPN is applied to complex networks where routes change frequently. Route dampening is then used to suppress unstable routes.

The reset bgp evpn dampening command is used to clear dampening information about specified routes on the public network and release specified suppressed routes. If no parameters is specified in the command, dampening information about all routes on the public network is cleared and all suppressed routes are released.

Prerequisites

You can use display bgp evpn all routing-table dampened command to view information about suppressed routes.

Configuration Impact

After the reset bgp dampening command is run, suppressed routes are released. If the status of some routes still changes frequently, route flapping may occur. Routing flapping consumes a large number of bandwidth and CPU resources.

Example

# Clear dampening information about routes and release suppressed routes.

<HUAWEI> reset bgp evpn dampening