Intel X710 (X710DA2) loop issue?

Hi,

We order an Intel X710DA2 from Provantage and SFPs from Amazon.

The NIC and accompanied SFPs work fine with full speed (10 Gbps) when connecting with other NIC Ports.

The Issue we need to ask here is when we loop the two ports of that X710DA2 together (connect the cable from port 1 to port 2 on same X710DA), the port status show "Cable Unplugged", of course the Intel IOUtil show IO not Enable:

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

1) 02/00/00 8086-1572  NA  Intel(R) Ethernet Converged Network Adapter X710-

2) 02/00/01 8086-1572  NA  Intel(R) Ethernet Controller X710 for 10GbE SFP+

Also, DPDK (1.8) testcmd shows only 1Gbps link connection between them.

#build/app/testpmd -c7 -n3 -- -i --nb-cores=2 --nb-ports=2

Port 0: 68:05:CA:30:51:B4

Configuring Port 1 (socket 0)

PMD: i40e_dev_tx_queue_setup(): Using full-featured tx path

PMD: i40e_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are satisfied. Rx Burst Bulk Alloc function will be used on port=1, queue=0.

Port 1: 68:05:CA:30:51:B5

Checking link statuses...

Port 0 Link Up - speed 1000 Mbps - full-duplex

Port 1 Link Up - speed 1000 Mbps - full-duplex

Please explain to us about this unexpected situation.

FYI,

Our current OS is CENTOS 7 with latest controller driver from Intel® Download Center

Lspci Info:

# lspci | egrep -i --color 'network|ethernet'

02:00.0 Ethernet controller: Intel Corporation Ethernet 10G 2P X710 Adapter (rev 01)

02:00.1 Ethernet controller: Intel Corporation Ethernet 10G 2P X710 Adapter (rev 01)

Lshw Info:

#lshw -class network

  *-network:0            

       description: Ethernet interface

       product: Ethernet 10G 2P X710 Adapter

       vendor: Intel Corporation

       physical id: 0

       bus info: pci@0000:02:00.0

       logical name: enp2s0f0

       version: 01

       serial: 68:05:ca:30:51:b4

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi msix pciexpress vpd bus_master cap_list rom ethernet physical autonegotiation

       configuration: autonegotiation=off broadcast=yes driver=i40e driverversion=0.3.30-k firmware=f4.22 a1.1 n40.25 e8000143f latency=0 link=no multicast=yes

       resources: irq:17 memory:f5000000-f57fffff memory:f5808000-f580ffff memory:f7580000-f75fffff

  *-network:1

       description: Ethernet interface

       product: Ethernet 10G 2P X710 Adapter

       vendor: Intel Corporation

       physical id: 0.1

       bus info: pci@0000:02:00.1

       logical name: enp2s0f1

       version: 01

       serial: 68:05:ca:30:51:b5

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi msix pciexpress vpd bus_master cap_list rom ethernet physical autonegotiation

       configuration: autonegotiation=off broadcast=yes driver=i40e driverversion=0.3.30-k firmware=f4.22 a1.1 n40.25 e8000143f latency=0 link=no multicast=yes

       resources: irq:17 memory:f4800000-f4ffffff memory:f5800000-f5807fff memory:f7500000-f757ffff

Ethtool Info:

# ethtool -i enp2s0f0

driver: i40e

version: 1.2.37

firmware-version: f4.33.31377 a1.2 n4.42 e191b

bus-info: 0000:02:00.0

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

# ethtool -i enp2s0f1

driver: i40e

version: 1.2.37

firmware-version: f4.33.31377 a1.2 n4.42 e191b

bus-info: 0000:02:00.1

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

Regards,

Tu

http://www.provantage.com/intel-x710da2~7ITEN0KM.htm

http://www.amazon.com/Intel-E10GSFPSR-Ethernet-Optic-10GBase-SR/dp/B002OHV01K