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New Contributor

SD-WAN Session Bandwidth Capped



I have the folowing problem. 


We were enablind today our SD-WAN connection beetwen two Branches. Both branches have 600Mbit connections from the ISP.


Testing with Iperf over the SD-WAN connection is only for one session max 70Mbit/s.

If i test width -P 10 i can se that we reach our bandwidth width only more Sessions a single sisseion cant reach that.


No traffic Shaper or QOS is enabled.


Anyone have a clue?

[ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 6.62 MBytes 55.5 Mbits/sec [ 6] 0.00-1.00 sec 7.12 MBytes 59.7 Mbits/sec [ 8] 0.00-1.00 sec 6.75 MBytes 56.6 Mbits/sec [ 10] 0.00-1.00 sec 6.88 MBytes 57.6 Mbits/sec [ 12] 0.00-1.00 sec 6.88 MBytes 57.6 Mbits/sec [ 14] 0.00-1.00 sec 4.00 MBytes 33.5 Mbits/sec [ 16] 0.00-1.00 sec 6.88 MBytes 57.6 Mbits/sec [ 18] 0.00-1.00 sec 6.62 MBytes 55.5 Mbits/sec [ 20] 0.00-1.00 sec 6.50 MBytes 54.5 Mbits/sec [ 22] 0.00-1.00 sec 3.88 MBytes 32.5 Mbits/sec [SUM] 0.00-1.00 sec 62.1 MBytes 521 Mbits/sec


Contributor II

Do you have any SD-WAN Rules applied? Network > SD-WAN Rules

Does this outbound port traffic use when you test?  Log & report > Forward Traffic > (enable destination interface column)

New Contributor

We had a rule for my client if it connects to the iperf server on the other branch that it uses the SD WAN connection.

And yes the interface gets used. 


We also had tested the iperf -R were the Server is sending and the client is receiving and its even worse. Half of the bandwidth from when the server is receiving from the client.


Thanks for the response.

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