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Slow bandwidth file transfer Vlan to Vlan

Viken Najarian

Hello, i'm experiencing an issue with my XG105w.

 

I have multiple Vlans in my network created with the xg105w, and when i transfer a file from 1 server being in the Vlan 1 to another server being in another Vlan, the transfer speed is limited at 60MB/s (480Mbps) (cf. screenshot below):

,

but if i transfer a file between 2 servers in the same VLAN, the speed is OK at 120MB/s (1Gbps) as shown below:

 

 

Do you have any ideas ?

 

Thanks.

Viken



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  • 0 in reply to sachingurung

    Hi Sachin,

    Thank you for your answer.

    Here is a screenshot from the network interfaces tab : 

     

    I'm reading the #4 from your troubleshooting guide but i don't understand 100% of it, i will analyze it.

  • 0 in reply to Viken Najarian

    Let me know where you can't understand a step and I will guide you. 

  • 0 in reply to sachingurung

    I will analyze it later.

    I just tested a new thing right now:

    I configured the port 4 of the xg105, and created a new Vlan on it (Vlan 800). Then i plugged a PC and configured it to be in the new Vlan on the port 4 and tested a file transfer between the Vlan 1 and the Vlan 800. The speed was OK ~990Mbps. But when i tested a file transfer between Vlan 800 and Vlan 10, the speed was as bad as the transfer speed between my other vlans (~480Mbps)

    To understand:

    Physical Port 1 hosts Vlan 1 (which is in reality LAN, not Vlan, because this is the network configured physically on the port 1) , Vlan10, Vlan20, Vlan30 and Vlan40. Physical Port 4 hosts Vlan 800.

    Here are the file transfers tested:

    • Vlan 1 to Vlan 1 ~990Mbps
    • Vlan 1 to Vlan 10 ~480Mbps
    • Vlan 10 to Vlan 20 ~480Mbps
    • Vlan 30 to Vlan 1 ~480Mbps
    • Vlan 800 to Vlan 1 ~990Mbps
    • Vlan 10 to Vlan 800 ~480Mbps

    Any suggestions?

  • 0 in reply to sachingurung

    Hello, i read your troubleshooting guide. The #4 is ok for me, i dont have any droped paquets and error. The #4.1 says that it may be a DNS error, but even if i try the transfer file by IP Address the issue is the same.

     

    Thank you.

  • 0 in reply to Viken Najarian

    What is speed negotiation configured for the interface where the VLAN10 and VLAN30 are defined? Set it to Auto Negotiate and test the speed. 

    Is IPS defined in the firewall rule for the VLAN?

    Cheers-

  • 0 in reply to sachingurung

    Hello,

     

    I can't find where i can see the speed negotiation for the VLAN10 and VLAN30. Can you help me please ?

     

    And i don't think that IPS is defined, i can't find it. here is a screenshot of my firewall rule 

     

    thank you for your help.

  • 0 in reply to Viken Najarian

    Hi Viken,

    The speed negotiation on the interface is 1000 Mbps Full duplex, I simply forgot to check the previous screenshot you posted. Edit Port1 | Advance | Speed. 

    When you start a transfer between two VLANS, what do you see in the system graphs? Show us a picture from Diagnostics | System Graphs | Port1.

  • 0 in reply to sachingurung

     Hi Sachin,

     

    Here is the screenshot you asked, im transfering a file from VLAN 10 to VLAN 20:

     

    Thank you.

    Viken

  • 0 in reply to Viken Najarian

    Hello,

     

    No more ideas ? Perhaps it's a hardware limitation? Am i alone to have this issue ?

     

    Viken.

  • 0 in reply to Viken Najarian

    Hi Viken,

    I was investigating internally if there is any hardware limitation with VLANs in the XG but, I am yet discover anything alike. According to the investigation, we did through the forums we do not capture any relative logs that can cause the slow throughput with inter-VLAN transfers. I would suggest you one last step before suspecting it to be associated with anything local. Take SSH to the XG and go to option 4. Device console and execute the following command: 

    system firewall-acceleration show

    If this module is enabled, then try to disable it and check the throughput. 

    Any help?