Intel Motherboards - ESXi network speed problem with J3455-ITX

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ESXi network speed problem with J3455-ITX

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=4751
Printed Date: 07 Aug 2025 at 2:25am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: ESXi network speed problem with J3455-ITX

Posted By: jspspy
Subject: ESXi network speed problem with J3455-ITX
Date Posted: 02 Apr 2017 at 8:28pm

" rel="nofollow - Hi there.

I have a J3455-ITX MB and I have ESXi running on it.

Now the problem is the network performance doesn't seems right.

When running windows 10 pro 64bit or ubuntu server 16.10 64bit straight on it, everything goes right. Network speed can up to 950Mbps tested by iperf.

But under ESXi, no matter I enabled the SSH for ESXi and login into it to test with iperf located in [/usr/lib/vmware/vsan/bin/iperf] or I create VMs with couples of OSs including ubuntu server 14.04, 16.10 and DSM then test with iperf under VMs, the network speed just goes between 50mbps and 600+mbps.

While I searching on the internet, someone claimed that this MB works well under ESXi, so I have no idea what is going wrong.

PS:

I have tried both the 1.10FW and 1.20FW, and I can't get the 1.11 testing FW for test.

I have tried ESXi 6.0 and 6.5, both patched the NIC driver via [v-front.de]'s powershell script.

Anyone have any idea? Many thanks.

Replies:

Posted By: kendimen
Date Posted: 04 Apr 2017 at 1:39pm

" rel="nofollow - The VT-D work with 1.20 Bios?

Please info.

Thanks.

Posted By: jspspy
Date Posted: 05 Apr 2017 at 2:11pm

The VT-D works on FW 1.20 .

Posted By: regnar
Date Posted: 24 Apr 2018 at 10:08am

" rel="nofollow - Kicking an old thread. Got the same issue. 400-600 Mbps in ESXi - even tried adding a dual-gig NIC on the PCIe bus - same speed as the Realtek on the motherboard. Tried disabling C-states - on latest BIOS (P1.30 - J3455B-ITX) - to no avail. Tried running /usr/lib/vmware/vsan/bin/iperf on ESXi 6.5 - even in the host os - maxes out at 600Mbps.

Anyone has a resolution to this?

Tried ESXi 6.7 - nothing changed.