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Cisco Bug: CSCte08176 - ESXi management network cache old MAC-address In UCS Service profile

Last Modified

Feb 13, 2018

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

1.0(1e)

Description (partial)

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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Bug Details Include

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