Preview Tool

Cisco Bug: CSCuw37826 - Ping loss between Keycard Readers (KR) and 2960X switch

Last Modified

Dec 13, 2018

Products (1)

  • Cisco Catalyst 2960-X Series Switches

Known Affected Releases


Description (partial)

issues with Keycard Readers (KR) connected to 2960X switch. pinging to the KR have a success rate of 53%. Under the interface we can see a high number of symbol errors, the same issue can be seen with the following devices as well:

*Ethernet controller CP220x  from Silicon Labs ( ).
"Chipset" uses tcp/ip stack  from  CMX Micronet TCP/IP Stack Source Release 3.23.

**IP Phone Siemens Gigaset C470IP

***NIC CP2200/1 from Silicon Labs, default 10Mbps auto, ending in 10/Full.

using WS-C2960X-24PS-L HW revision 0x12 or WS-C2960X-24PSQ-L HW revision 0x5

Related Community Discussions

Symbol errors on WS-C2960X-48FPD-L
Hello, when i connect a Siemens Sentron PAC3200 (that is an industrial power sensor device) to a WS-C2960X-48FPD-L switchport, i get about 50% packet loss on that port. The port shows symbol errors. If i connect any other cheap desktop switch/hub between the PAC3200 and the 2960x switch port, then everything works fine, so there is no cabling issue or port defect. The problem seems to only exist when directly connecting the PAC3200 to the 2960x switch port. It seems to be an incompatibility between ...
Latest activity: Oct 25, 2018
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.