Skip to main content
AlexHaj
New Member
August 31, 2021
Question

SD-WAN Session Bandwidth Capped

  • August 31, 2021
  • 2 replies
  • 2807 views

Hello.

 

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

 

    2 replies

    ac1
    Explorer III
    August 31, 2021
    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)

    AC
    AlexHaj
    AlexHajAuthor
    New Member
    September 1, 2021

    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.

    Virtual event | September 2026. SASE summit. The age of autonomous trust. Register here!