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7100 - Switch stops passing traffic reliably - Parity error seen in logs

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Title7100 - Switch stops passing traffic reliably - Parity error seen in logs
Symptoms
  • Switch stops passing traffic reliably
  • Parity errors similar to below are seen in messageLog of a "show support":
<3>bcmStrat[4.bcmDPC]unit 0 EGR_VLAN_CONTROL_1 entry 48 parity error
  • Reboot of affected switch restores traffic flow
Environment
  • 7100-Series
  • Seen on firmware 8.32.01.0024
Cause
Memory parity errors causing switch to drop packets.
Resolution
  • Upgrade to latest 7100 firmware (8.62.04)
  • If memory errors persist after upgrade, could be faulty hardware (contact GTAC for assistance)
Additional notes

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