TWAMP Logs
For supported software information, click here.
You can use the Two-Way Active Measurement Protocol (TWAMP), defined in RFC 5357, to measure metrics such as delay, delay variation, and loss between two IP endpoints that support the TWAMP sender and receiver functionality. TWAMP logs include these metrics, which are recorded by IP session for a tenant or VOS device.
TWAMP Log Message Format
2021-03-03T16:22:53+0000 twampSenderSessLog, applianceName=Branch1, tenantName=ServiceProvider, twampSrc=70.0.1.2:50000, twampDst=70.0.2.2:50000, twampVRF=ISP-A-Transport-VR, twampDSCP=32, tenantId=6, vsnId=0, applianceId=1, twampPktSz=54, twampNumPkts=100000, twampNumPktLoss=0, twampNumTx=6488, twampNumRx=6488, twampNumTxErr=0, twampNumRxErr=1, twampFwdDelay=2307|17|80952, twampRevDelay=2390|376|31616, twamp2WayDelay=4699|417|92210, twampFwdDelayVar=2270|0|80914, twampRevDelayVar=2009|0|31240, twamp2WayDelayVar=4269|0|91793, twampStartTime=1614735029, twampEndTime=1614788573
TWAMP Log Message Fields
| Field | Description |
|---|---|
| applianceName | Name of the VOS device. This is the name displayed in the output of the show system identification branch CLI command. |
| tenantName | Name of the organization (tenant). |
| twampSrc | TWAMP source IP address and port number. |
| twampDst | TWAMP destination IP address and port number. |
| twampVRF |
TWAMP routing instance. |
| twampDSCP |
Differentiated service code point (DSCP) value. |
| tenantId | Tenant identifier. This value is allocated internally by the VOS device. |
| vsnId | Identifier of the virtual service node, or virtual machine (VM). |
| applianceId | VOS device identifier. This field is not used. |
| twampPktSz |
Packet size in bytes. |
| twampNumPkts | Number of packets. |
| twampNumPktLoss | Number of packets lost. |
| twampNumTx | Number of packets transmitted. |
| twampNumRx | Number of response packets received. |
| twampNumTxErr | Number of errors in packets transmitted. |
| twampNumRxErr | Number of errors in response packets received. |
| twampFwdDelay |
Average, minimum, and maximum values of packet delay in the forward direction, in microseconds. |
| twampRevDelay | Average, minimum, and maximum values of packet delay in reverse direction, in microseconds. |
| twamp2WayDelay | Average, minimum, and maximum values of two-way delay, in microseconds. |
| twampRevDelayVar | Average, minimum, and maximum values of two-way delay variation in reverse direction, in microseconds. |
| twampFwdDelayVar | Average, minimum, and maximum values of two-way delay variation in forward direction, in microseconds. |
| twamp2WayDelayVar | Average, minimum, and maximum values of two-way delay variation, in microseconds. |
| twampStartTime | Start time of measurement session, in UNIX epoch time format. |
| twampEndTime | End time of measurement session, in UNIX epoch time format. |
Support Software Information
Releases 21.2.1 and later support all content described in this article.