When NQA is used to monitor an IP network, the following test instances can be configured. Before configuring NQA to monitor an IP network, familiarize yourself with the usage scenario of each test instance and complete the pre-configuration tasks.
Test Type |
Usage Scenario |
|---|---|
DNS test |
This section describes how to detect the speed at which a DNS name is resolved to an IP address using a DNS test. |
ICMP test |
An Internet Control Message Protocol (ICMP) test monitors the end-to-end connectivity, packet loss ratio, and delay time on an IP network. |
TCP test |
A TCP test monitors the connectivity, packet loss ratio, and delay time of a TCP connection on an IP network. |
UDP test |
A UDP test measures the round-trip delay time of UDP packets exchanged between Huawei devices. |
SNMP test |
An SNMP test measures the communication speed between a host and an SNMP agent using UDP packets. |
Trace test |
A trace test monitors the connectivity, packet loss ratio, and delay time hop by hop on an IP network and the packet forwarding path. |
UDP jitter test |
A UDP jitter test measures the end-to-end jitter time for various services or simulates a voice test. Although the Internet Control Message Protocol (ICMP) reply function may be disabled on devices on the public network to defend against network attacks, the UDP jitter test can still be conducted. |
ICMP Jitter test |
An Internet Control Message Protocol (ICMP) Jitter test measures the end-to-end jitter time for various services. |
Path Jitter test |
An NQA path jitter test instance, however, can identify the router whose jitter value is great. |
Path MTU test |
A path MTU test can obtain the maximum MTU value that does not require packet fragmentation during the packet transmission on the link. |