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Cisco Bug: CSCsy76154 - No LAG - WLC sometime is using wrong port mac address to send packet

Last Modified

Jun 30, 2016

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases


Description (partial)

DHCP packets relayed by the WLC to the DHCP server may be intermittently lost.
Packet capture shows that the WLC is sourcing packets with the wrong MAC.

For example:

WLC port1 mac 11:11:11:11:11:11 / port2 mac 22:22:22:22:22:22

Packets are sent on port1 using a source MAC of 22:22:22:22:22:22

Now the connected switch to wlc will learn wrong mac-address-table 
information and therefore packets are lost.

LAG is not configured, and DHCP proxy is enabled.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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