tos (UDP jitter test instance)

Function

The tos command sets the ToS value for UDP jitter test packets.

The undo tos command restores the default ToS value.

The default ToS value is 0.

Format

tos tos-value

undo tos

Parameters

Parameter	Description	Value
tos-value	Specifies the ToS value in test packets.	The value is an integer ranging from 0 to 255.

Parameter

Description

Value

tos-value

Specifies the ToS value in test packets.

The value is an integer ranging from 0 to 255.

Views

NQA view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
sla	write

Usage Guidelines

Usage Scenario

ToS is an 8-bit field in the IP header. To set the ToS value for NQA test packets, run the tos command.

By configuring ToS, you can apply policy-based routing or CAR to test packets.

Configuration Impact

If the ToS value has been set for packets in a test instance, running the tos command again overrides the previous configuration.

Precautions

If parameters need to be changed during the running of the test instance, the system prompts you whether to terminate the test instance. Press "Y" or "N" as required.

If you press "Y", the test instance is terminated and parameters changed. The settings take effect after being committed. To restart the test instance, run the start command.
If you press "N", the test instance keeps running, and the parameters fail to be modified.

Example

# Set the ToS value for packets in the test instance named user test to 10.

<HUAWEI> system-view
[~HUAWEI] nqa test-instance user test
[*HUAWEI-nqa-user-test] test-type jitter
[*HUAWEI-nqa-user-test] tos 10