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NAC Squid process cannot be started

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TitleNAC Squid process cannot be started
  • Install NAC VM v7.x on a virtualization platform
  • squid fails to run
  •  error seen in syslog:
Sep 15 08:07:23 nacappliance kernel: [  806.083841] traps: squid[12662] trap invalid opcode ip:6549be sp:7ffe7a1de710 error:0 in squid[400000+590000]

  • VMware
  • NAC/Control appliance VM 7.x
  • Virtualization host with Intel's 53xx processor family or older

*Note: this applies only to NAC (ExtremeControl) appliance/VM not to NAC Manager (Control) as a piece of software in Netsight.
Starting with NAC ver 7.x, squid doesn't run on old processors like:
  • HPA (Intel(R) Core(TM)2 CPU 6400) - internal hwtype hpa2
  • TA (Intel(R) Xeon(R) CPU 53xx) - internal hwtype is ita2

To find the processor  use the below command from the NAC/Control appliance shell
​cat /proc/cpuinfo

Use hosts with newer Intel processors like the 54xx family.

NAC 7.0.8 and higher has a new version of squid that could cope with these older processors, try if upgrading to the latest 7.0 NAC version (7.0.8 or higher) fixes the problem.

Additional notes
Xeon 5300-series "Clovertown"  (ITA2)

 A quad-core (2×2) successor of the Woodcrest for DP segment, consisting of two dual-core Woodcrest chips in one package similarly to the dual-core Pentium D branded CPUs (two single-core chips) or the quad-coreKentsfield. All Clovertowns use the LGA 771 package. The Clovertown has been usually implemented with two Woodcrest dies on a multi-chip module, with 8 MB of L2 cache (4 MB per die). Like Woodcrest, lower models use a 1066 MT/s FSB, and higher models use a 1333 MT/s FSB. Intel released Clovertown, product code 80563, on 14 November 2006[17] with models E5310, E5320, E5335, E5345, and X5355, ranging from 1.6 GHz to 2.66 GHz. All models support: MMX, SSE, SSE2, SSE3, SSSE3, Intel 64, XD bit (an NX bit implementation), Intel VT. The E and X designations are borrowed from Intel's Core 2 model numbering scheme; an ending of -0 implies a 1066 MT/s FSB, and an ending of -5 implies a 1333 MT/s FSB.[16] All models have a TDP of 80 W with the exception of the X5355, which has a TDP of 120 W, and the X5365, which has a TDP of 150 W. A low-voltage version of Clovertown with a TDP of 50 W has a model numbers L5310, L5320 and L5335 (1.6 GHz, 1.86 GHz and 2.0 GHz respectively). The 3.0 GHz X5365 arrived in July 2007, and became available in theApple Mac Pro [2] on 4 April 2007.



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