Community
cancel
Showing results for 
Search instead for 
Did you mean: 
idata
Community Manager
1,799 Views

ixgbe: link flapping on two directly connected servers with 82599ES adapter

Good time.

We experince link flapping while connecting two supermicro servers with 82599ES adapters:

[Wed Jan 6 07:10:14 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Down

[Wed Jan 6 07:10:15 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Up 10 Gbps, Flow Control: RX/TX

[Wed Jan 6 07:10:15 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Down

[Wed Jan 6 07:10:16 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Up 10 Gbps, Flow Control: RX/TX

[Wed Jan 6 07:10:16 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Down

[Wed Jan 6 07:10:16 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Up 10 Gbps, Flow Control: RX/TX

[Wed Jan 6 07:10:16 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Down

[Wed Jan 6 07:10:16 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Up 10 Gbps, Flow Control: RX/TX

[Wed Jan 6 07:10:17 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Down

[Wed Jan 6 07:10:17 2016] ixgbe 0000:81:00.1 enp129s0f1: NIC Link is Up 10 Gbps, Flow Control: RX/TX

So we are trying to connect two supermicro servers with E10G42BTDA X520-DA2 controller in each server:

81:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)

 

In one controller there is following SFP module:

# ethtool --module-info enp129s0f1

Identifier : 0x03 (SFP)

Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)

Connector : 0x07 (LC)

Transceiver codes : 0x20 0x00 0x00 0x00 0x00 0x00 0x00 0x00

Transceiver type : 10G Ethernet: 10G Base-LR

Encoding : 0x06 (64B/66B)

BR, Nominal : 10300MBd

Rate identifier : 0x00 (unspecified)

Length (SMF,km) : 20km

Length (SMF) : 20000m

Length (50um) : 0m

Length (62.5um) : 0m

Length (Copper) : 0m

Length (OM3) : 0m

Laser wavelength : 1330nm

Vendor name : GIGALINK

Vendor OUI : 00:90:65

Vendor PN : GL-OT-ST12LC1-13

Vendor rev : A

Optical diagnostics support : Yes

Laser bias current : 37.020 mA

Laser output power : 0.9654 mW / -0.15 dBm

Receiver signal average optical power : 0.4904 mW / -3.09 dBm

Module temperature : 44.23 degrees C / 111.61 degrees F

Module voltage : 3.2836 V

Alarm/warning flags implemented : Yes

Laser bias current high alarm : Off

Laser bias current low alarm : Off

Laser bias current high warning : Off

Laser bias current low warning : Off

Laser output power high alarm : Off

Laser output power low alarm : Off

Laser output power high warning : Off

Laser output power low warning : Off

Module temperature high alarm : Off

Module temperature low alarm : Off

Module temperature high warning : Off

Module temperature low war...

0 Kudos
1 Reply
st4
New Contributor III
358 Views

Hi pva,

Thank you for the post. You are right we recommend to use supported fiber module such as

 

the one posted on this website

 

http://www.intel.ph/content/dam/doc/product-brief/ethernet-sfp-optics-brief.pdf http://www.intel.ph/content/dam/doc/product-brief/ethernet-sfp-optics-brief.pdf. Currently,

 

I do not have information about WDM fiber module for this NIC.

 

If the 82599 NIC is an onboard NIC on your Supermicro* system, you may check with them

 

to better assist you about onboard NIC. Thank you.

rgds,

 

wb
Reply