Cisco Bug: CSCuw19950 - CDP Neighbors not seen on dot1x authenticator interfaces

Last Modified

Jun 03, 2018

Products (1)

Cisco Catalyst 4500 Series Switches

Known Affected Releases

15.1(2.1)SG

Description (partial)

Symptom:
- Catalyst 4500 switch (Supervisor 6) is unable to see CDP neighbors on the dot1x authenticator ports
- The dot1x supplicant can see Catalyst 4500 through CDP accordingly
- Performance is not impacted

Conditions:
- Network Edge Authentication Topology (NEAT) is running  on the switches where both authenticator and supplicant switches perform 802.1x  authentication
- Configured VLAN is higher than 1
- The issue has been seen on 151-2.SG6 and earlier releases

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