delay-measure enable two-way

Function

The delay-measure enable two-way command enables hop-by-hop two-way delay measurement for an IP Flow Performance Measurement (IP FPM) instance.

The undo delay-measure enable command disables hop-by-hop two-way delay measurement for an IP Flow Performance Measurement (IP FPM) instance.

The delay-measure enable two-way continual command enables proactive two-way delay measurement for an IP Flow Performance Measurement (IP FPM) instance.

The undo delay-measure enable command disables proactive delay measurement of an IP FPM instance.

The delay-measure enable two-way tlp mid-point command enables delay measurement on a mid-point.

The undo delay-measure enable two-way tlp mid-point command disables delay measurement on a mid-point.

By default, on-demand two-way delay measurement of an IP FPM instance and proactive one-way delay measurement of an IP FPM instance are disabled. Delay measurement is disabled on a mid-point from an IP Flow Performance Measurement (IP FPM) instance.

Format

delay-measure enable two-way tlp tlp-id1 [ tlp-id2 ] [ continual | time-range time-range ]

delay-measure enable two-way tlp mid-point [ continual | time-range time-range ]

undo delay-measure enable two-way tlp mid-point [ continual ]

Parameters

Parameter	Description	Value
tlp-id2	Specifies a TLP ID for on-demand two-way delay measurement.	The value is an integer ranging from 1 to 16777215.
continual	Indicates proactive delay measurement.	-
time-range time-range	Specifies the statistical period for on-demand two-way delay measurement.	The value is an integer that can be 5, 10, 15, or 30, in minutes. The default value is 10 minutes.
tlp tlp-id1	Specifies a TLP ID for proactive two-way delay measurement.	The value is an integer ranging from 1 to 16777215.
mid-point	Specifies a time range for delay measurement on a mid-point.	-

Views

IPFPM-DCP instance view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
ipfpm	write

Usage Guidelines

Usage Scenario

The IP FPM performance statistics serve as a reliable reference for assessing IP network performance and therefore are useful for fault diagnosis and service statistics.

To diagnose network faults and locate faulty nodes when network performance deteriorates, run the delay-measure enable mid-point command.
To monitor two-way delay performance in a specified period or diagnose network faults and locate faulty nodes when network performance deteriorates, run the delay-measure enable two-way command.
To detect faults when network performance deteriorates and monitor proactive two-way delay performance, run the delay-measure enable two-way continual command.

Prerequisites

An IP FPM model has been established, including configuring a DCP and MCP, binding a TLP to a physical interface, and creating a target flow and IP FPM instance.

Precautions

If a master/slave switchover is performed, or the device is restarted, delay measurement on the mid-point and on-demand two-way delay measurement will become invalid. You must reconfigure the function.

On-demand two-way delay measurement cannot function together with on-demand or proactive one-way delay measurement.

Before implementing two-way delay measurement, ensure that the target flow in the IP FPM instance is bidirectional.

Proactive two-way delay measurement cannot function together with on-demand or proactive one-way delay measurement.

The on-demand statistics command is an action command and does not generate a configuration file.

Example

# Enable delay measurement on a mid-point in an IP FPM instance.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet0/1/1
[*HUAWEI-GigabitEthernet0/1/1] ipfpm tlp 100
[*HUAWEI-GigabitEthernet0/1/1] quit
[*HUAWEI] nqa ipfpm mcp
[*HUAWEI-nqa-ipfpm-mcp] mcp id 1.1.1.1
[*HUAWEI-nqa-ipfpm-mcp] protocol udp port 2048
[*HUAWEI-nqa-ipfpm-mcp] instance 1
[*HUAWEI-nqa-ipfpm-mcp-instance-1] dcp 1.1.1.1
[*HUAWEI-nqa-ipfpm-mcp-instance-1] ach 1
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] flow forward
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] in-group dcp 1.1.1.1 tlp 100
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] quit
[*HUAWEI-nqa-ipfpm-mcp-instance-1] quit
[*HUAWEI-nqa-ipfpm-mcp] quit
[*HUAWEI] nqa ipfpm dcp
[*HUAWEI-nqa-ipfpm-dcp] dcp id 1.1.1.1
[*HUAWEI-nqa-ipfpm-dcp] mcp 1.1.1.1 port 2048
[*HUAWEI-nqa-ipfpm-dcp] instance 1
[*HUAWEI-nqa-ipfpm-dcp-instance-1] tlp 100 in-point ingress
[*HUAWEI-nqa-ipfpm-dcp-instance-1] flow forward source 1.1.1.1
[*HUAWEI-nqa-ipfpm-dcp-instance-1] commit
[~HUAWEI-nqa-ipfpm-dcp-instance-1] delay-measure enable two-way tlp mid-point time-range 30

# Enable on-demand two-way delay measurement for an IP FPM instance.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet0/1/1
[*HUAWEI-GigabitEthernet0/1/1] ipfpm tlp 100
[*HUAWEI-GigabitEthernet0/1/1] quit
[*HUAWEI] nqa ipfpm mcp
[*HUAWEI-nqa-ipfpm-mcp] mcp id 1.1.1.1
[*HUAWEI-nqa-ipfpm-mcp] protocol udp port 2048
[*HUAWEI-nqa-ipfpm-mcp] instance 1
[*HUAWEI-nqa-ipfpm-mcp-instance-1] dcp 1.1.1.1
[*HUAWEI-nqa-ipfpm-mcp-instance-1] ach 1
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] flow forward
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] in-group dcp 1.1.1.1 tlp 100
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] quit
[*HUAWEI-nqa-ipfpm-mcp-instance-1] quit
[*HUAWEI-nqa-ipfpm-mcp] quit
[*HUAWEI] nqa ipfpm dcp
[*HUAWEI-nqa-ipfpm-dcp] dcp id 1.1.1.1
[*HUAWEI-nqa-ipfpm-dcp] mcp 1.1.1.1 port 2048
[*HUAWEI-nqa-ipfpm-dcp] instance 1
[*HUAWEI-nqa-ipfpm-dcp-instance-1] tlp 100 in-point ingress
[*HUAWEI-nqa-ipfpm-dcp-instance-1] flow forward source 1.1.1.1
[*HUAWEI-nqa-ipfpm-dcp-instance-1] commit
[~HUAWEI-nqa-ipfpm-dcp-instance-1] delay-measure enable two-way tlp 100

# Enable proactive two-way delay measurement for an IP FPM instance.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet0/1/1
[*HUAWEI-GigabitEthernet0/1/1] ipfpm tlp 100
[*HUAWEI-GigabitEthernet0/1/1] quit
[*HUAWEI] nqa ipfpm mcp
[*HUAWEI-nqa-ipfpm-mcp] mcp id 1.1.1.1
[*HUAWEI-nqa-ipfpm-mcp] protocol udp port 2048
[*HUAWEI-nqa-ipfpm-mcp] instance 1
[*HUAWEI-nqa-ipfpm-mcp-instance-1] dcp 1.1.1.1
[*HUAWEI-nqa-ipfpm-mcp-instance-1] ach 1
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] flow forward
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] in-group dcp 1.1.1.1 tlp 100
[*HUAWEI-nqa-ipfpm-mcp-instance-1-ach-1] quit
[*HUAWEI-nqa-ipfpm-mcp-instance-1] quit
[*HUAWEI-nqa-ipfpm-mcp] quit
[*HUAWEI] nqa ipfpm dcp
[*HUAWEI-nqa-ipfpm-dcp] dcp id 1.1.1.1
[*HUAWEI-nqa-ipfpm-dcp] mcp 1.1.1.1 port 2048
[*HUAWEI-nqa-ipfpm-dcp] instance 1
[*HUAWEI-nqa-ipfpm-dcp-instance-1] tlp 100 in-point ingress
[*HUAWEI-nqa-ipfpm-dcp-instance-1] flow forward source 1.1.1.1
[*HUAWEI-nqa-ipfpm-dcp-instance-1] commit
[~HUAWEI-nqa-ipfpm-dcp-instance-1] delay-measure enable two-way tlp 100 continual