Cisco Bug: CSCvs18568 - Cosmetic: Post ND ISSU remove/add NAT on interface, ACLQOS "TCP NAT allocated region index exceeded"
May 14, 2020
- Cisco Nexus 9000 Series Switches
Known Affected Releases
Symptom: The following message is appearing after removing and re-adding the NAT configuration under a L3 interface but the TCP NAT TCAM utilization is not full Trigger: (config)# int X (config-if)# no ip nat inside (config-if)# ip nat inside Symptoms: upon failure of re-enabling 'ip nat inside', each affected platform type raises a platform specific syslog message N9K-C9364C: 'show logging log' %ACLQOS-SLOT1-2-ACLQOS_FAILED: ACLQOS failure: TCP NAT allocated region index exceeded. N9K-...-FX2: 'show logging log' %NAT-2-HW_PROG_FAILED: Hardware programming for NAT failed:Sufficient free entries are not available in TCAM bank Conditions: N9K-C9364C or N9K-...-FX2 running NXOS: - 9.3(2) or before - 9.2(4) or before A Non Disruptive ISSU has been performed on the switch (and no reload since then)
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