Why ssh connection freezes in BladeCenter IBM HS22 when using Red Hat Enterprise Linux 5?

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 5.5
  • BladeCente5 IBM HS22

Issue

  • While accessing BladeCenter HS22 via ssh user notice that session freezes for some instants and without take any action servers go back to normal response.

Resolution

  • Disable ipv6 - it is a know problem that ipv6 enabled can cause this behavior in remote sessions.
  • Have the client using the IBM UpdateExpress to make sure all firmwares and BIOS is in sync. Problems can happen if the BIOS on the blade is newer then the BIOS certified with.

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