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Cisco Bug: CSCvv49684 - DNAC NDP failing to choose right MAC for multiple ISE sessions with the same IP

Last Modified

Sep 03, 2020

Products (1)

  • Cisco DNA Center

Known Affected Releases

Cyclops DNAC-Cyclops

Description (partial)

Symptom:
Hydra is not detecting spoofing because NDP nf-stream events are populated with wrong Client MAC address and as a result Hydra is not processing those flows (and not detecting the attack).

Conditions:
Have multiple sessions on ISE with the same IP address (and different MAC), that is causing NDP to choose the wrong session for IP-MAC bindings.
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