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Cisco Bug: CSCtb30691 - Agent authenticates multiple times in multi-homed Windows environment

Last Modified

Nov 13, 2016

Products (1)

  • Cisco NAC Appliance (Clean Access)

Known Affected Releases

4.7(1.8)

Description (partial)

Symptom:

The host machine is multi-homed and typically has manual metric set on these interfaces. Each of the interfaces connect to a different CAS. NAC Agent pops up first on lower metric interface, then some time after user logs in the agent will pops up again on another interface. 

Conditions:

- The host is multiple-homed;
- The lower metric interface connects to OOB CAS. If the first CAS the agent authenticates with is in-band the agent will not pop again;
- if wireless is involved, suppliant/wireless management does not disable wireless when wired is connected;

The problem could occur regardless the interfaces use auto metric (default) or manual metric.
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