Cisco Bug: CSCte08176 - ESXi management network cache old MAC-address In UCS Service profile
Jun 06, 2017
- Cisco Unified Computing System
Known Affected Releases
Symptom: VMware's ESXi hypervisor caches the mac address of its physical nic after it put's it in promiscuous mode. If subsequently the administrator changes the mac-address value defined in the associated service profile for that compute blade, then the nic will have a new mac address while the older mac is not removed/updated from the ESXi hypervisor. This potentially leads to a mac address conflicts if the initial mac address is re-assigned to a different blade (via service profile association). A way to confirm this problem is by collecting "esxcfg-nics -l" and "esxcfg-vmknic -l" and compare the mac-address output in both. The first one should correctly display the mac-address assigned in the service-profile while the second will display the cached mac-address. VMware KB article: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1031111 Conditions: This problem is seen if the mac-address assigned to a service-profile used for an ESXi system is changed after the ESXi installation.
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