Bandwith test does not provide packet lost when it finish

RouterOS The User Manager
1

I have done a bandwidth test between two Router Board 750 GL (ROUTER OS 6.7) during 60 seconds. I have checked that a lot of packets have been lost during the test but when the test is finished it shows Lost packets=0. Why it does not show the total packet lost?

/tool bandwidth-test 40.1.1.1 duration=60s direction=both local-udp-tx-size=1500 protocol=udp remote-udp-tx-size=1500 user=1234 password=1234 local-tx-speed=40M remote-tx-speed=40M

status: done testing
duration: 60s
tx-current: 39.9Mbps
tx-10-second-average: 39.9Mbps
tx-total-average: 39.9Mbps
rx-current: 39.9Mbps
rx-10-second-average: 39.7Mbps
rx-total-average: 39.7Mbps
lost-packets: 0
random-data: no
direction: both
tx-size: 1500
rx-size: 1500

How Is it posible to know how many packets have been lost during the test?

Thanks in advandec

2

So you are pushing 40Mbps each direction, but what is the size of the pipe you are traversing?

3

The problem is not the pipe because I have connect with a straight cable. I am working in my desk before going to the customer. The problem is that packets have been lost during the band with test but when the test is finished it shows 0 PACKETS. Why it does not show all the packets that have been lost during the test?

4

whats to say packets are actually being dropped? Is it possible that all packets were sent/received?

5

Isn’t possible that dropped packets were sent again so they weren’t lost by the costs of lower measured bandwidth?

6

How are you proving that packets are lost?
You are pushing 40Mbps through a 1,000Mbps pipe, direct connected. I would be surprised if you were losing packets at all. You are testing UDP, but you are NOT pushing 110% of the pipe, so you shouldn’t see any dropped packets at all.

7

It is very easy to drop packets because I remove the Ethernet cable during 3 seconds aprox. and once I connect it again the packet lost it shows 10.000 packes lost (for example), and when the test finishs it shows 0 packet LOST, how is it posible it shows 0 packe lost if during the test it has been lost 10.000 packets as mínimum.