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In this Document

Symptoms

Changes

Cause

Solution

References

Created from <SR 3-6965334131>

Applies to:

Symptoms

Some on-board ixgbe interfaces on certain x86 and SPARC systems are reported not to link up with 1 Gbit/s speed even if the switch advertizes it. The link is down or the Auto-negotiated link speed stays at 100 Mbit/s instead. This was seen in conjunction with certain switch models.

Changes

The symptom was reported with

• ixgbe on-board interfaces on X3-2 (X4170 M3), X3-2L (X4270-M3), X4-2, X5-2 and T5-2 using the Intel X540 (Twinville) chip set
• when connected to certain Nortel, Avaya ERS5650TD, Juniper EX4200, HP Pro 6600ml and Extreme Networks x325 switches

Cause

This symptom is described in known issues:

 Bug 16673015 - X3-2 ixgbe 10GBASE-T link stays at 100FDX even if both sides advertise 1000FDX

with base bug reference:

 Bug 15952813 - ixgbe twinville, link autonegotiation unstable when connected to 1Gb switch

Solution

Intel recommends to use a crossover cable to the switch if the symptom is observed.

As a workaround in Solaris the following is available:

• Solaris 10
  apply patch 148322-09 (SPARC) / 148323-09 (x86) or higher,
  
  # ndd -set /dev/ixgbeX adv_1000fdx_cap 1
  # ndd -set /dev/ixgbeX adv_100fdx_cap 0
   
• Solaris 11
  # dladm set-linkprop -p en_100fdx_cap=0 net0
   

References

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