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KPist
Beginner
1,785 Views

Connect directly X710 to XL710 with QSFP Breakout Cable

Hello!

I have a question regarding to the direct connectability of NICs without any switch.

I have a computer equipped with Intel ethernet CNA X710-DA4FH (4x10gbps) and another computer with Intel ethernet CNA XL710-QDA1 (1x40gbps). They are connected directly using Intel X4DACBL3 Ethernet QSFP 40G QSFP+ to 4x10G Breakout Cable. Theoretically, is it a possible setup? Unfortunately, I could not make it work.

Thanks in advance!

Best regards

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5 Replies
idata
Community Manager
551 Views

Hi Qweee,

 

 

Thank you for posting in Wired Communities. I will further check for you and can you also share what is the operating system used?

 

 

Thanks,

 

Sharon

 

KPist
Beginner
551 Views

Hello Sharon!

Thank you for the quick reply!

I have freshly installed Debian stretch x64 systems.

# cat /proc/version

Linux version 4.9.0-4-amd64 (mailto:debian-kernel@lists.debian.org debian-kernel@lists.debian.org) (gcc version 6.3.0 20170516 (Debian 6.3.0-18) ) # 1 SMP Debian 4.9.51-1 (2017-09-28)

The drivers are also up to date.

X710-DA4FH

# ethtool -i ens6f0

driver: i40e

version: 1.6.16-k

firmware-version: 6.01 0x800034af 1.1747.0

expansion-rom-version:

bus-info: 0000:02:00.0

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

On the other machine (XL710-QDA1):

# ethtool -i enp4s0f0

driver: i40e

version: 2.3.6

firmware-version: 6.01 0x800034a3 1.1747.0

expansion-rom-version:

bus-info: 0000:04:00.0

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

Thank you for your help!

idata
Community Manager
551 Views

Hi Qweee,

 

 

Thank you for the information. You may need to use a a QSFP to SFP cable. Aside from that, did you try using the QCU tool to convert the XL710 40Gb ports to 10 GB?

 

 

You may download the tool at https://downloadcenter.intel.com/download/25851/Intel-QSFP-Configuration-Utility-Linux- and refer to the user guide

 

https://downloadmirror.intel.com/25116/eng/qsfp-configuration-utility-quick-usage-guide.pdf

 

 

Thanks,

 

Sharon

 

 

KPist
Beginner
551 Views

Dear Sharon,

Thank you for your help. This tool made it! It works!

I would share my output from QCU tool after I set it up in 4x10GB mode.

# ./qcu64e

Intel(R) QSFP+ Configuration Utility

QCU version: v2.30.16.08

Copyright(C) 2014 - 2017 by Intel Corporation.

Software released under Intel Proprietary License.

NIC Seg:Bus Ven-Dev Mode Adapter Name

=== ======= ========= ======== =================================================

1) 000:004 8086-1584 4x10 Intel(R) Ethernet Converged Network Adapter XL710

Again, thanks!

All the best,

Qweee

idata
Community Manager
551 Views

Hi Qweee,

 

 

Thank you for the update and glad the tool made it works for you. Please feel free to update me if you still have other inquiries. Thank you.

 

 

Regards,

 

Sharon

 

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