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Cisco Bug: CSCus44443 - ISE authentication duplication mechanism not using calling station id

Last Modified

Feb 25, 2018

Products (1)

  • Cisco Identity Services Engine (ISE) 3300 Series Appliances

Known Affected Releases


Description (partial)

ISE is having mechanism to detect duplicated radius requests. It should not base only on radius id but also calling station id. That is critical in deployments with huge number of endpoints (wg. WLC of flexvpn with 200+ numbers of sessions). If reauthentication occurs for example as a result of link down/up ISE will receive hundreds of Access-Requests - but for some of those radius id will be the same (because it's just one byte value). In that scenario ISE will incorrectly detect them as duplicates.

That is a bug since ISE should use at least Calling Station ID as additional attribute for duplicate detection.

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