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Cisco Bug: CSCuq63934 - SG500XG 8F8T Overloaded - service interruption and high latency

Last Modified

Jan 27, 2017

Products (50)

  • Cisco Small Business 500 Series Stackable Managed Switches
  • Cisco SG500X-48 48-Port Gigabit with 4-Port 10-Gigabit Stackable Managed Switch
  • Cisco SG300-52 52-Port Gigabit Managed Switch
  • Cisco SG500-52P 52-port Gigabit POE Stackable Managed Switch
  • Cisco SG300-10 10-Port Gigabit Managed Switch
  • Cisco SF302-08MP 8-Port 10/100 Max PoE Managed Switch with Gigabit Uplinks
  • Cisco SF500-48MP 48-port 10/100 Max PoE+ Stackable Managed Switch
  • Cisco SG300-10PP 10-port Gigabit PoE+ Managed Switch
  • Cisco SF302-08 8-Port 10/100 Managed Switch with Gigabit Uplinks
  • Cisco SF300-24 24-Port 10/100 Managed Switch with Gigabit Uplinks
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Known Affected Releases

Description (partial)

8F8T Overloaded - service interruption and high latency

Storage is connected on XG9 (gline) and XG10 (gline).
XG14 (gline) is connected to host ESX17 ,XG16 (cisco module) is connected to ESX1(Gline is 3rd party SFP module).
All this in the same ip routing.
As soon the transfer starts, the switch port starts getting up and down. The transfer starts lagging and speed is very low.
a latency from the ESX Servers to the Storage over this Switch about 60ms. The direct connected ESX Host to the storage has 2ms.
The MGMT of the Switch is completely broken after the issue.

Customer bought another Cisco SFP module,but same result.
Hardware is Eternus DX100 S2 and Fujitsu RX300 S8
Customer said The only thing he saw was that the link goes down for the ESX host. So it could be a NIC with Switch issue.
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