BugZero | Cisco BugID CSCwe66216 - 9136 Ethernet Redundancy: observed %SW_MATM-4-MAC...

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BugZero | Cisco BugID CSCwe66216 - 9136 Ethernet Redundancy: observed %SW_MATM-4-MAC...

ODD
Cisco
CSCwe66216

Cisco - Defect ID: CSCwe66216

9136 Ethernet Redundancy: observed %SW_MATM-4-MACFLAP_NOTIF:, interface speed set to 1000 on AP

ODD
Cisco
CSCwe66216

Cisco - Defect ID: CSCwe66216

9136 Ethernet Redundancy: observed %SW_MATM-4-MACFLAP_NOTIF:, interface speed set to 1000 on AP

Last updated on April 30th, 2026

BugZero Risk Score
7.8 High

Overall: 7.8

Severity: 8.2

Lifecycle: 9.1

Popularity: 4.6

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Bug Details

Views: 2

Description

Symptom

Observing mac-flap notification on the switch with speed set 1000 f9136 AP with 2 ports connected to switch. observing this issue even if we set one port speed auto and another port speed to 1000. Local_Network# *Mar 14 09:37:51.532 PDT: %SW_MATM-4-MACFLAP_NOTIF: Host 7411.b2bd.608c in vlan 22 is flapping between port Te1/0/41 and port Te1/0/42 *Mar 14 09:38:04.548 PDT: %SW_MATM-4-MACFLAP_NOTIF: Host 7411.b2bd.608c in vlan 22 is flapping between port Te1/0/41 and port Te1/0/42 *Mar 14 09:38:20.443 PDT: %SW_MATM-4-MACFLAP_NOTIF: Host 7411.b2bd.608c in vlan 22 is flapping between port Te1/0/41 and port Te1/0/42

Conditions

with 9136 AP , connect 2 ports to switch and set the speed to 1000

Workaround

set the speed to auto

Further Problem Description

NA

Change history

2026-01-02 Added: 17.10.0.181, 17.11.0.155, 17.3.1.9, 17.3.2.32, 17.3.3.26, 17.3.4.30, 17.3.4.40, 17.3.5.42, 17.3.6.76, 17.3.7.36, 17.3.8.21, 17.4.1.6, 17.5.1.12, 17.6.1.13, 17.6.2.43, 17.6.3.33, 17.6.4.56, 17.6.5.22, 17.6.6.66, 17.6.7.22, 17.6.8.3, 17.7.1.11, 17.8.0.144, 17.9.1.8, 17.9.2.52, 17.9.3.50, 8.10.130.0, 8.10.142.0, 8.10.151.0, 8.10.162.0, 8.10.171.0, 8.10.181.0, 8.10.182.0, 8.10.183.0, 8.10.185.0, 8.10.190.0, 8.10.196.0, ap-17.12.0.69, ap-17.9.1.8, ap-17.9.3.48

Relevant Products

Click on a version to see all relevant bugs

Affected versions:17.10.0.181, 17.11.0.155, 17.3.1.9, 17.3.2.32, 17.3.3.26, 17.3.4.30, 17.3.4.40, 17.3.5.42, 17.3.6.76, 17.3.7.36, 17.3.8.21, 17.4.1.6, 17.5.1.12, 17.6.1.13, 17.6.2.43, 17.6.3.33, 17.6.4.56, 17.6.5.22, 17.6.6.66, 17.6.7.22, 17.6.8.3, 17.7.1.11, 17.8.0.144, 17.9.1.8, 17.9.2.52, 17.9.3.50, 8.10.130.0, 8.10.142.0, 8.10.151.0, 8.10.162.0, 8.10.171.0, 8.10.181.0, 8.10.182.0, 8.10.183.0, 8.10.185.0, 8.10.190.0, 8.10.196.0, ap-17.12.0.69, ap-17.9.1.8, ap-17.9.3.48

Fixed versions: 017.013(001), 17.12.1.5, 17.12.2.35, 17.12.3.31, 17.12.4.22, 17.12.5.41, 17.12.6.28, 17.12.7.13, 17.13.0.107, 17.14.0.79, 17.15.1.6, 17.15.2.206, 17.15.2.52, 17.15.3.28, 17.15.4.160, 17.15.4.18, 17.15.5.36, 17.16.0.88, 17.17.0.87, 17.18.1.8, 17.18.2.64, 17.18.3.18, 17.9.4.27, 17.9.5.47, 17.9.6.40, 17.9.7.16, 17.9.8.5, 17.9.9.3, 26.1.1.11, AP.CI.11.4.10.107, AP.CI.6259, CG-17.12.1.154, CG-17.13.1.15, CG-17.9.3.180, Cupertino-17.9.4, Dublin-17.12.1, ap-17.12.0.89, ap-17.12.1.5, ap-17.13.0.107, ap-17.13.0.8, ap-17.9.4.17, ap-17.9.4.27

Relevant Products

Click on a version to see all relevant bugs

Affected versions:17.10.0.181, 17.11.0.155, 17.3.1.9, 17.3.2.32, 17.3.3.26, 17.3.4.30, 17.3.4.40, 17.3.5.42, 17.3.6.76, 17.3.7.36, 17.3.8.21, 17.4.1.6, 17.5.1.12, 17.6.1.13, 17.6.2.43, 17.6.3.33, 17.6.4.56, 17.6.5.22, 17.6.6.66, 17.6.7.22, 17.6.8.3, 17.7.1.11, 17.8.0.144, 17.9.1.8, 17.9.2.52, 17.9.3.50, 8.10.130.0, 8.10.142.0, 8.10.151.0, 8.10.162.0, 8.10.171.0, 8.10.181.0, 8.10.182.0, 8.10.183.0, 8.10.185.0, 8.10.190.0, 8.10.196.0, ap-17.12.0.69, ap-17.9.1.8, ap-17.9.3.48

Fixed versions: 017.013(001), 17.12.1.5, 17.12.2.35, 17.12.3.31, 17.12.4.22, 17.12.5.41, 17.12.6.28, 17.12.7.13, 17.13.0.107, 17.14.0.79, 17.15.1.6, 17.15.2.206, 17.15.2.52, 17.15.3.28, 17.15.4.160, 17.15.4.18, 17.15.5.36, 17.16.0.88, 17.17.0.87, 17.18.1.8, 17.18.2.64, 17.18.3.18, 17.9.4.27, 17.9.5.47, 17.9.6.40, 17.9.7.16, 17.9.8.5, 17.9.9.3, 26.1.1.11, AP.CI.11.4.10.107, AP.CI.6259, CG-17.12.1.154, CG-17.13.1.15, CG-17.9.3.180, Cupertino-17.9.4, Dublin-17.12.1, ap-17.12.0.89, ap-17.12.1.5, ap-17.13.0.107, ap-17.13.0.8, ap-17.9.4.17, ap-17.9.4.27

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