Which NQA test instance types does the AR router support

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The AR supports NQA test instances of the following types: DHCP, DNS, FTP, HTTP, ICMP, SNMP, TCP, Trace, LSP Ping, LSP Trace, UDP, UDP jitter, and UDP jitter based on packet sending on the interface card.
The AR provides IPv6 NQA test instances of ICMP, Trace, and UDP jitter.

Other related questions:
How do I configure association between VRRP and NQA test instances on an S series switch
To configure association between VRRP and NQA test instances on an S series switch (except the S1700), perform the following operations: 1. Run the system-view command to enter the system view. 2. Run the interface interface-type interface-number[.subinterface-number ] command to enter the view of the interface to which the VRRP group belongs. 3. Run the vrrp vrid virtual-router-id track nqa admin-name test-name [ reduced value-reduced ] command to configure VRRP to track an NQA test instance. By default, when the tracked NQA test instance becomes Down, the priority decreases by 10. reduced value-reduced: specifies the value by which the VRRP priority reduces if the tracked NQA test instance becomes Down. The value ranges from 1 to 255. The minimum value of the priority is 0. Priority value 0 is reserved for special use. If a backup device receives a VRRP IPv6 Advertisement packet carrying the priority value of 0, the backup device immediately preempts the Master state. Note: The NQA function is controlled by a license. The commands related to NQA can be used on a newly purchased device but does not take effect. To use the NQA function, apply for and purchase a license from a Huawei local office. VRRP can also associate with BFD or a routing protocol to implement an active/standby switchover. For detailed configuration procedure, see section "Common VRRP Operations" at S1720&S2700&S3700&S5700&S6700&S7700&S9700 Common Operation Guide. The configuration method for the S9300 is the same as that for other switch models.

Which trunks does the AR router support
The AR router supports the following trunks: - A PRA trunk is connected to a VE1 interface and is usually used to connect two PBXs. - AT0 trunk: An AT0 trunk is connected to an FXO interface. It is an analog circuit trunk and uses the FXO interface of the AR to connect to the PSTN through a common telephone line. If PBX users in an enterprise need to make local calls to external users or to make toll calls, the AT0 trunk is configured. - SIP trunk: SIP trunk includes SIP AT0, SIP PRA and SIP IP trunks. A SIP trunk is established on an IP link and connects a PBX and an IMS. - E1R2 trunk: An E1R2 trunk is connected to a VE1 interface. The E1R2 trunk is usually used to connect two PBXs. If the remote device uses R2 signaling, use the E1R2 trunk to connect to the AR to the remote device. (Note: V200R002C00 and later versions support the E1R2 trunk.) - H323 trunk: An H323 trunk is established on an IP link and connects a PBX and an IMS or PBXs in different areas. (Note: V200R002C01 and later versions support the H323 trunk.) - BRA trunk: A BRA trunk is connected to a BRA interface. It can be used to connect a PBX to the ISDN. (Note: V200R002C02 and later versions support the BRA trunk.)

NQA test instance stops automatically
Root cause analysis: By default, no automatic test interval is configured for NQA, that is, the system performs the test only once. The test instance stops automatically after the test is completed. Solution: For the static routes associated with NQA, when the test takes a long time, you need to configure the test frequency. The frequency cannot be set to a small value. Otherwise, the test cannot be completed and there is no NQA test result. It is recommended that this value be configured according to the NQA test type, test time, and other factors. For details, see The NQA test instance is automatically terminated.

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