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Cisco Bug: CSCut23908 - HWIC loses connectivity to IP's outside subnet when 802.1x process done

Last Modified

Jan 28, 2017

Products (96)

  • Cisco IOS
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco C892FSP Integrated Services Router
  • Cisco VG204XM Analog Voice Gateway
  • Cisco 881SRSTW Integrated Services Router
  • Cisco 2951 Integrated Services Router
  • Cisco 1905 Serial Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 861W Integrated Services Router
  • Cisco 898 Secure G.SHDSL EFM/ATM with Multi-Mode 4G LTE ISR Router
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Known Affected Releases

15.3(3)M4 15.4(3)M1

Description (partial)

Symptom:
When using an HWIC in a router for authenticating endpoints to ISE using 802.1x, the HWIC port will lose connectivity to everything outside of the local subnet when the 802.1x process completes. As a result, customers cannot use the HWIC for authenticating endpoints.

Conditions:
This has been confirmed on an EHWIC-4ESG-P in a 1921 running 15.4(3)M1 or IOS 15.3.3(M4). Other HWICs running in other platforms on other IOS versions may be vulnerable as well.  That can be neither confirmed or denied at this point.
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Bug Details Include

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  • Status
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