Azure S2S connection extremly slow compared to P2S

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New Contributor

Hi,


Since a few months back our S2S to Azure has become extremly slow. 

Our SKU is VpnGw2 and we have setup two S2S (one per office location) - both S2S are experiencing the same issue. 

 

Onprem bandwith is around 800Mbit/s.


Our P2S Azure VPN is working OK and have a speed that is accepted. 


Anyone who has any idea what can cause this issue? 

 

If more information is needed, please let me know.. This drop of bandwith is causing alot of headache for our users.

 

Thanks in advance!

 

Below is results from iPerf and psping:

 

----- SPEED ONPREM TO AZURE (local network - ethernet) -----

[ 54]   0.00-30.00  sec  3.12 MBytes   874 Kbits/sec                  sender

[ 54]   0.00-30.00  sec  3.02 MBytes   844 Kbits/sec                  receiver

[ 56]   0.00-30.00  sec  1.50 MBytes   419 Kbits/sec                  sender

[ 56]   0.00-30.00  sec  1.34 MBytes   373 Kbits/sec                  receiver

[ 58]   0.00-30.00  sec  2.50 MBytes   699 Kbits/sec                  sender

[ 58]   0.00-30.00  sec  2.30 MBytes   642 Kbits/sec                  receiver

[ 60]   0.00-30.00  sec  4.12 MBytes  1.15 Mbits/sec                  sender

[ 60]   0.00-30.00  sec  3.97 MBytes  1.11 Mbits/sec                  receiver

[ 62]   0.00-30.00  sec  2.62 MBytes   734 Kbits/sec                  sender

[ 62]   0.00-30.00  sec  2.45 MBytes   685 Kbits/sec                  receiver

[ 64]   0.00-30.00  sec   640 KBytes   175 Kbits/sec                  sender

[ 64]   0.00-30.00  sec  0.00 Bytes  0.00 bits/sec                  receiver

[ 66]   0.00-30.00  sec   640 KBytes   175 Kbits/sec                  sender

[ 66]   0.00-30.00  sec  0.00 Bytes  0.00 bits/sec                  receiver

[SUM]   0.00-30.00  sec  89.2 MBytes  25.0 Mbits/sec                  sender

[SUM]   0.00-30.00  sec  83.3 MBytes  23.3 Mbits/sec                  receiver

 

----- SPEED ONPREM TO AZURE (Azure P2S VPN - ethernet) -----

[ 54]   0.00-30.00  sec  80.4 MBytes  22.5 Mbits/sec                  sender

[ 54]   0.00-30.00  sec  80.2 MBytes  22.4 Mbits/sec                  receiver

[ 56]   0.00-30.00  sec  85.1 MBytes  23.8 Mbits/sec                  sender

[ 56]   0.00-30.00  sec  85.0 MBytes  23.8 Mbits/sec                  receiver

[ 58]   0.00-30.00  sec  73.9 MBytes  20.7 Mbits/sec                  sender

[ 58]   0.00-30.00  sec  73.7 MBytes  20.6 Mbits/sec                  receiver

[ 60]   0.00-30.00  sec  73.9 MBytes  20.7 Mbits/sec                  sender

[ 60]   0.00-30.00  sec  73.6 MBytes  20.6 Mbits/sec                  receiver

[ 62]   0.00-30.00  sec  78.2 MBytes  21.9 Mbits/sec                  sender

[ 62]   0.00-30.00  sec  78.0 MBytes  21.8 Mbits/sec                  receiver

[ 64]   0.00-30.00  sec   640 KBytes   175 Kbits/sec                  sender

[ 64]   0.00-30.00  sec  0.00 Bytes  0.00 bits/sec                  receiver

[ 66]   0.00-30.00  sec   640 KBytes   175 Kbits/sec                  sender

[ 66]   0.00-30.00  sec  0.00 Bytes  0.00 bits/sec                  receiver

[SUM]   0.00-30.00  sec  2.32 GBytes   664 Mbits/sec                  sender

[SUM]   0.00-30.00  sec  2.31 GBytes   662 Mbits/sec                  receiver

 

PSPing results to Azure server:

sn0rth_1-1613144751805.png

 

 

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