Cisco Bug: CSCvj00455 - C4500 // IPDT ARP probes sent on voice vlan untagged.
Jan 15, 2019
- Cisco Catalyst 4000 Series Switches
Known Affected Releases
Symptom: - IPDT entry for IP phone frequently going INACTIVE, even though phone is still powered on - If dot1x/MAB in use, dACL gets removed from interface where phone is connected, causing loss of network connectivity for phone. - If dot1x/MAB in use, and dACL in use, then might see large amount of forwarding engine drops for "InpL2AclDrop" under "show platform software drop-port". This indicates drop at forwarding engine due to ACL deny statement on L2 port. Conditions: - Catalyst 4500 - Running 3.10.0 or 3.10.1 - 6900, 7900, or 8800 series Cisco IP phones connected to 4500 (There may be other models affected). - dot1x/MAB authentication with dACL
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Bug Details Include
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