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Cisco Bug: CSCuo84009 - F2 and F2e modules do not learn MAC address

Last Modified

Mar 16, 2016

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases


Description (partial)

Ports on F2 and F2Emay fail to learn any MAC address. show hardware internal error shows that the following count is incrementing:
Ingress redirect due to DNL check

This bug applies to F2 and F2E modules only.  This bug affects all software up to 6.2(8).

Port security and "mac classify-packet" is configured on one of the ports on the forwarding engine. For example:
interface Ethernet1/7
  switchport access vlan 100
  switchport port-security aging type inactivity
  switchport port-security aging time 5
  switchport port-security violation restrict
  switchport port-security
  mac packet-classify
  no shutdown

Then, bring up a port on the same forwarding engine (for example ethernet 1/8).
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Bug Details Include

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