trace-prefix (BMP Session IPv4 unicast view)

Function

The trace-prefix command configures BMP to monitor the trace data of a specified IPv4 public network unicast route.

The undo trace-prefix command restores the default configuration.

By default, BMP does not monitor the trace data of a specified IPv4 public network unicast route.

Format

trace-prefix ipv4-address mask-length

undo trace-prefix ipv4-address mask-length

Parameters

Parameter	Description	Value
ipv4-address	Specifies the destination IPv4 address.	The value is in dotted decimal notation.
mask-length	Specifies the mask length.	The value is an integer ranging from 0 to 32.

Parameter

Description

Value

ipv4-address

Specifies the destination IPv4 address.

The value is in dotted decimal notation.

mask-length

Specifies the mask length.

The value is an integer ranging from 0 to 32.

Views

BMP Session IPv4 unicast view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bmp	write

Usage Guidelines

Usage Scenario

By default, BMP does not report the trace data of BGP routes on a device. As a result, you can only manually query the trace data of the device's BGP routes.

To resolve this issue, run the trace-prefix command on the device after a connection is established between the device and BMP server. The command configures BMP to monitor the trace data of a specified IPv4 public network unicast route in real time. After the configuration, BMP can monitor how the route is processed in response to the following main items:

Import route-policy for routes received from a specified peer (configured using the peer route-policy import command)
Export route-policy for routes to be advertised to a specified peer (configured using the peer route-policy export command)
Export route-policy for BGP VPN routes (configured using the export route-policy command)
Import route-policy for BGP VPN routes (configured using the import route-policy command)
Route-policy for routes imported using the network command
Route-policy for summary routes
Route withdrawal

Example

# Configure BMP to report the trace data of a specified IPv4 public network unicast route to a BMP server.

<HUAWEI> system-view
[~HUAWEI] bmp
[*HUAWEI-bmp] bmp-session 10.1.1.1
[*HUAWEI-bmp-session-10.1.1.1] ipv4 unicast
[*HUAWEI-bmp-session-10.1.1.1-ipv4-unicast] trace-prefix 192.168.1.1 32