ICMP Jitter Sensor
The sensor sends a series of ICMP packets and calculates Jitter based on RTT.
Jitter is a typical problem of the connectionless networks or packet-switched networks. Each packet can be transmitted by a different path and arrive at different times from the emitter to the receiver.
Jitter means interpacket delay variance. When multiple packets are sent consecutively from a source to a destination, for example, 100ms apart, and if the network is behaving ideally, the destination should receive the packets 100ms apart. But if there are delays in the network (like queuing, arriving through alternate routes, and so on), the arrival delay between packets might be greater than or less than 100ms.
If the difference is positive, it is counted in positive jitter. A negative value is counted in negative jitter.
Counters:
- Average Time
- Maximum Time
- Minimum Time
- Jitter
- Negative Jitter
- Positive Jitter
- % Packet Loss
- Packet Count
Alerts:
- Request Timeout
- Connection degradation
- Jitter is high
- Jitter is very high
References