Cisco Bug: CSCtc39241 - ESW500: switchport port security doesn't decrement intermittently
Jan 27, 2017
- Cisco LAN Switch Software
Known Affected Releases
Symptom: Data is being discarded by the switch for one or more devices connected to a switch port. This problem is seen more often when a PC is connected to an IP phone that is connected to the ESW switch and the IP phone is using PoE. Conditions: When the phone (and connected PC) are rebooted there is a race condition where the switchport port security counter is incremented twice erroneously and this causes the switch port security to begin discarding packets. The user will see the port security logs in the switch logs if this problem is occurring.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases