How to use twping to measure IP performance
An example of how to use twping to measure round-trip IP performance.
Note: To start the steps in this task, first enter operational mode.
Use the
twping command to send a request to the TWAMP server to measure the round-trip IP performance.vyatta@R2:~$ twping 11.1.0.1 count 10 session-count 2Approximately 4.2 seconds until results available
--- twping statistics from [11.1.0.1]:8889 to [Rtr2]:55026 ---
SID: 0b010001d961f8d25daa301413dddec8
first: 2015-07-28T12:49:23.476
last: 2015-07-28T12:49:24.605
10 sent, 0 lost (0.000%), 0 send duplicates, 0 reflect duplicates
round-trip time min/median/max = 0.746/1.5/2.39 ms, (err=1.11 ms)
send time min/median/max = 0.196/0.6/1.54 ms, (err=0.556 ms)
reflect time min/median/max = 0.543/0.9/1.79 ms, (err=0.556 ms)
reflector processing time min/max = 0.0129/0.0277 ms
two-way PDV = 0.9 ms (P95-P50)
send PDV = 1 ms (P95-P50)
reflect PDV = 0.9 ms (P95-P50)
send hops = 0 (consistently)
reflect hops = 0 (consistently)
--- twping statistics from [11.1.0.1]:8904 to [Rtr2]:42203 ---
SID: 0b010001d961f8d25eff1b28f68b20f7
first: 2015-07-28T12:49:23.495
last: 2015-07-28T12:49:24.940
10 sent, 0 lost (0.000%), 0 send duplicates, 0 reflect duplicates
round-trip time min/median/max = 1.24/1.6/3.24 ms, (err=1.11 ms)
send time min/median/max = 0.37/0.7/2.52 ms, (err=0.556 ms)
reflect time min/median/max = 0.713/0.9/1.51 ms, (err=0.556 ms)
reflector processing time min/max = 0.0157/0.031 ms
two-way PDV = 1.7 ms (P95-P50)
send PDV = 1.9 ms (P95-P50)
reflect PDV = 0.7 ms (P95-P50)
send hops = 0 (consistently)
reflect hops = 0 (consistently)