CANOGA PERKINS 9145E NID Software Version 4.10 - Manual (Page 55)

Diagnostics 9145E NID Software User’s Manual
Latency/Jitter Test
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The leg of the trip (Local to Far End or Far End to Local) on which the P-Bit remarking or DSCP
change is occurring will be identified. It is assumed that each Latency/Jitter test that is initiated
will take a particular path, so each round trip overwrites the previous round trip values.
Test IP Addr/VLAN The destination IP address and VLAN for the currently test or the last test
completed.
Round Trip Packets Number of completed round trips.
Test Duration The length of time the test has been running, or the length of the last test run.
Dropped Packets Number of packets sent which received no response.
Minimum Latency (ms) Time in ms for the shortest round trip.
Minimum Jitter (ms) Smallest absolute time difference between 2 round trips.
Average Latency (ms) Computed by adding all the round trip latencies and dividing by the num-
ber of completed round trips.
Average Jitter (ms) Computed by adding all the absolute time differences between successive
round trips and dividing by the number of completed round trips minus 1.
Maximum Latency (ms) The highest time interval for a successful round trip.
Maximum Jitter (ms) The highest absolute time difference between 2 successful round trips.
Far End PBit Sent The programmed priority value entered.
Far End PBit Rcvd The priority as it was received at the destination 9145E.
Local PBit Sent The programmed priority value is put back into the packet at the far end for the
return trip.
Local PBit Rcvd The priority as it was received at the end of the Round Trip.
Far End DSCP Sent This is the programmed DSCP.
Far End DSCP Rcvd The DSCP that was received at the destination 9145E.
Local DSCP Sent The programmed DSCP value is put back into the packet at the far end for
the return trip.