S1720, S2700, S5700, and S6720 V200R011C10 Configuration Guide - Network Management and Monitoring
This document provides the configurations of network management and monitoring features supported by the product, including SNMP, RMON and RMON2, LLDP, Performance Management, iPCA, NQA, Service Diagnosis, Mirroring, Packet Capture, NetStream, sFlow, TWAMP Light, and NETCONF.
Configuring a UDP Jitter Test Instance
Context
When configuring a UDP jitter test instance, configure reachable routes between the UDP Jitter client and the UDP Jitter server.
You can set the number of packets to be sent consecutively in each test instance. This configuration is used to simulate certain traffic. For example, G.711 traffic can be simulated within 1 minute by sending 3000 UDP packets at an interval of 20 milliseconds.
If the clocks at the client and server are not synchronized, the result of unidirectional jitter test will be inaccurate. Configuring NTP on the client and server can effectively improve test result accuracy.
The NQA client also functions as the UDP Jitter client. The jitter obtained in this test is the UDP Jitter. Perform the following steps on the NQA client.
In the load balancing scenario, unidirectional UDP jitter test is not supported.
When a link aggregation interface is used as the outbound interface of a route, the unidirectional UDP jitter test result will be inaccurate if the member interfaces of the link aggregation interface change.
When a VLANIF interface is used as the outbound interface of a route, the unidirectional UDP jitter test result will be inaccurate if the physical interfaces of the VLANIF interface change.
Procedure
- Configure the UDP Jitter server.
- Configure the NQA client.
- (Optional) Run the following commands as required to
configure parameters for the UDP jitter test:
Run description string
A description is configured for the test instance.
Run frequency interval
The test period is set for the NQA test instance.
Run timeout time
The timeout period of a probe is set for the NQA test instance.
Run source-address ipv4 ipv4-address
The source IP address is configured.
Run source-port port-number
The source port number is configured.
Run ttl number
The TTL value in the NQA test packet is set.
Run datasize size
The packet size is set for the NQA test instance.
Run datafill fillstring
The padding field is configured for the NQA test instance.
Run source-interface interface-type interface-number
The source interface that sends test packets is configured.
Run sendpacket passroute
The NQA test instance is configured to send packets without searching the routing table.
By default, the NQA test packets are sent with searching the routing table.
Run probe-count number
The number of probes in each test is set.
By default, the number of probes is 3.
Run tos value
Type of Service (TOS) is set for the test packet.
Run fail-percent percent
The failure percentage is set for the NQA test instance.
By default, the failure percentage is 100%, that is, the test is regarded failed only when all the probes fail.
Run interval { milliseconds interval | seconds interval }
The interval at which test packets are sent is set.
A shorter interval enables a test to be complete sooner. Delays occur during the sending and receiving of test packets on the processor. Therefore, if the interval for sending test packets is short, the UDP jitter test results are inaccurate.
Run jitter-packetnum number
The number of test packets sent in each probe is set.
By default, 20 packets are sent each time in each test.
The UDP jitter test is used to collect and analyze the delay variation during the UDP packet transmission. To improve the accuracy of the test result, the system sends multiple test packets each time. The more test packets are sent, the more accurate the statistics are, and the longer the test lasts.
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The probe-count command sets the number of UDP Jitter probes and the jitter-packetnum command sets the number of test packets sent during each probe. The product of probe count multiplied by the number of test packets must be smaller than or equal to 3000.
Run vpn-instance vpn-instance-name
The VPN instance name is configured.
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Only S1720GW, S1720GW-E, S1720GWR, S1720GWR-E, S1720X, S1720X-E, S2720EI, S5720LI, S5720S-LI, S5720SI, S5720S-SI, S5730SI, S5730S-EI, S5720EI, S5720HI, S6720LI, S6720S-LI, S6720SI, S6720S-SI, S6720EI, and S6720S-EI support this command.
Run records history number
The maximum number of historical records is set for the NQA test instance.
Run records result number
The maximum number of result records is set for the NQA test instance.
Run agetime hh:mm:ss
The aging time is set for the NQA test instance.
- (Optional) Run the following commands as required to
configure parameters for the UDP jitter test: