Configuring the ICMP jitter operation
The ICMP jitter operation measures unidirectional and bidirectional jitters. The operation result helps you to determine whether the network can carry jitter-sensitive services such as real-time voice and video services.
The ICMP jitter operation works as follows:
The NQA client sends ICMP packets to the destination device.
The destination device time stamps each packet it receives, and then sends the packet back to the NQA client.
Upon receiving the responses, the NQA client calculates the jitter according to the timestamps.
To configure the ICMP jitter operation:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Create an NQA operation and enter NQA operation view. | nqa entry admin-name operation-tag | By default, no NQA operations exist. |
3. Specify the ICMP jitter type and enter its view. | type icmp-jitter | N/A |
4. Specify the destination address of ICMP packets. | destination ip ip-address | By default, no destination IP address is specified. |
5. (Optional.) Set the number of ICMP packets sent in one ICMP jitter operation. | probe packet-number packet-number | The default setting is 10. |
6. (Optional.) Set the interval for sending ICMP packets. | probe packet-interval interval | The default setting is 20 milliseconds. |
7. (Optional.) Specify how long the NQA client waits for a response from the server before it regards the response times out. | probe packet-timeout timeout | The default setting is 3000 milliseconds. |
8. (Optional.) Specify the source IP address for ICMP packets. | source ip ip-address | By default, the packets take the primary IP address of the output interface as their source IP address. The source IP address must be the IP address of a local interface, and the interface must be up. Otherwise, no ICMP packets can be sent out. |
![[NOTE: ]](images/note.png) | NOTE: Use the display nqa result or display nqa statistics command to verify the ICMP jitter operation. The display nqa history command does not display the ICMP jitter operation results or statistics. | |