The display ipfpm statistic-type command displays packet loss statistics of a specified measurement instance in the IP Flow Performance Measurement (FPM) system.
| Parameter | Description | Value |
|---|---|---|
| loss | Displays packet loss statistics. | - |
| instance instance-id | Displays packet loss statistics of a specified measurement instance. | The value is an integer that ranges from 1 to 16777214. |
| ach ach-id | Displays hop-by-hop performance statistics for an Atomic Closed Hop (ACH). |
The value is an integer ranging from 1 to 2147483647. |
Usage Scenario
The packet loss statistics of a specified measurement instance include the indicators such as the number of discarded packets, number of discarded bytes, and packet loss ratio. To view packet loss statistics of a specified measurement instance, run the display ipfpm statistic-type command.
To locate and diagnose network faults when network performance deteriorates, run the display ipfpm statistic-type command with ach configured to check statistics for a specified ACH.
Precautions
This command can be only executed on the MCP.
The first statistics record obtained through the IP FPM may be inaccurate, so do not use the first statistics record to determine network performance.
If the packet loss ratio is a negative value, the service packets may be unknown unicast packets or the color bits on devices participating in measurement may be different.
# Display packet loss statistics of measurement instance 1.
<HUAWEI> display ipfpm statistic-type loss instance 1
Latest loss statistics of forward flow:
Unit: p - packet, b - byte
------------------------------------------------------------------------------------------
Period Loss(p) LossRatio(p) Loss(b) LossRatio(b)
------------------------------------------------------------------------------------------
136118757 20 20.000000% 2000 20.000000%
136118756 20 20.000000% 2000 20.000000%
136118755 20 20.000000% 2000 20.000000%
136118753 20 20.000000% 2000 20.000000%
136118752 20 20.000000% 2000 20.000000%
136118751 20 20.000000% 2000 20.000000%
136118750 20 20.000000% 2000 20.000000%
136118749 20 20.000000% 2000 20.000000%
136118748 20 20.000000% 2000 20.000000%
136118747 20 20.000000% 2000 20.000000%
136118746 20 20.000000% 2000 20.000000%
136118745 20 20.000000% 2000 20.000000%
Latest loss statistics of backward flow:
Unit: p - packet, b - byte
------------------------------------------------------------------------------------------
Period Loss(p) LossRatio(p) Loss(b) LossRatio(b)
------------------------------------------------------------------------------------------
136118757 20 20.000000% 2000 20.000000%
136118756 20 20.000000% 2000 20.000000%
136118755 20 20.000000% 2000 20.000000%
136118753 20 20.000000% 2000 20.000000%
136118752 20 20.000000% 2000 20.000000%
136118751 20 20.000000% 2000 20.000000%
136118750 20 20.000000% 2000 20.000000%
136118749 20 20.000000% 2000 20.000000%
136118748 20 20.000000% 2000 20.000000%
136118747 20 20.000000% 2000 20.000000%
136118746 20 20.000000% 2000 20.000000%
136118745 20 20.000000% 2000 20.000000%
Item |
Description |
|---|---|
Latest loss statistics of forward flow |
- |
Latest loss statistics of backward flow |
- |
Period |
Measurement interval. |
Loss(p) |
Number of discarded packets. |
LossRatio(p) |
Packet loss ratio. |
Loss(b) |
Number of discarded bytes. |
LossRatio(b) |
Packet loss ratio of bytes. |