This is happening on my cisco switch 9300

[lachimip]

Hi Members,

This is happening on my Cisco switch, and I have no idea why this is happening. 

Anybody had the same issue? If so, how did you all fix this, please? Your help suggestion and idea would be highly appreciated.

May 1 23:25:19.000: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to down
May 1 23:25:20.003: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to down
May 1 23:25:22.927: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to up
May 1 23:25:23.928: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to up
May 1 23:30:04.005: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to up
May 1 23:30:05.004: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to up
May 1 23:33:30.631: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 1 23:33:31.631: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 1 23:33:33.002: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 1 23:33:34.006: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 1 23:33:36.961: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 1 23:33:37.961: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 1 23:34:16.815: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to down
May 1 23:34:17.819: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to down
May 1 23:34:21.363: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to up
May 1 23:34:22.364: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to up
May 1 23:34:26.763: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to down
May 1 23:34:27.766: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to down
May 1 23:34:30.761: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to up
May 1 23:34:31.760: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to up
May 1 23:40:34.006: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to down
May 1 23:40:35.008: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to down
May 1 23:40:37.927: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to up
May 1 23:40:38.928: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to up
May 1 23:41:49.603: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/29, changed state to up
May 1 23:41:50.603: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/29, changed state to up
May 1 23:41:56.931: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/29, changed state to down
May 1 23:41:57.934: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/29, changed state to down
May 1 23:42:00.883: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/29, changed state to up
May 1 23:42:01.883: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/29, changed state to up
May 1 23:49:10.002: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to down
May 1 23:49:11.004: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to down
May 1 23:49:13.920: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to up
May 1 23:49:14.920: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to up
May 1 23:58:13.714: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.2.23] [localport: 22] at 09:58:13 AEST Thu May 2 2024
May 1 23:58:20.703: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/35, changed state to up
May 1 23:58:21.703: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/35, changed state to up
May 1 23:59:48.719: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/36, changed state to down
May 1 23:59:49.721: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/36, changed state to down
May 2 00:00:38.946: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 00:00:39.951: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 00:00:42.949: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 00:00:43.950: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 00:01:32.148: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.1.11] [localport: 22] at 10:01:32 AEST Thu May 2 2024
May 2 00:01:46.124: %SYS-6-LOGOUT: User Nyrstar has exited tty session 2(10.1.1.11)
May 2 00:03:59.289: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/20, changed state to up
May 2 00:04:00.289: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/20, changed state to up
May 2 00:08:27.522: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 00:08:28.523: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 00:08:31.434: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 00:08:32.434: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 00:09:35.322: %SYS-6-TTY_EXPIRE_TIMER: (exec timer expired, tty 1 (10.1.2.23)), user Nyrstar
May 2 00:09:35.322: %SYS-6-LOGOUT: User Nyrstar has exited tty session 1(10.1.2.23)
May 2 00:34:21.730: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/47, changed state to down
May 2 00:34:22.738: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/47, changed state to down
May 2 00:36:00.496: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/35, changed state to down
May 2 00:36:01.498: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/35, changed state to down
May 2 00:36:56.296: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/35, changed state to up
May 2 00:36:57.296: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/35, changed state to up
May 2 00:48:28.757: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/4, changed state to down
May 2 00:48:29.760: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/4, changed state to down
May 2 00:48:32.252: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/4, changed state to up
May 2 00:48:33.253: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/4, changed state to up
May 2 00:48:54.972: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/4, changed state to down
May 2 00:48:55.974: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/4, changed state to down
May 2 00:48:58.868: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/4, changed state to up
May 2 00:48:59.868: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/4, changed state to up
May 2 00:51:07.206: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 00:51:08.207: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 00:51:11.166: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 00:51:12.213: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 00:58:06.793: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to down
May 2 00:58:08.796: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to up
May 2 00:58:12.953: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to down
May 2 00:58:13.956: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to down
May 2 00:59:02.627: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/8, changed state to up
May 2 00:59:03.628: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/8, changed state to up
May 2 01:01:24.817: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/47, changed state to up
May 2 01:01:25.818: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/47, changed state to up
May 2 01:01:31.809: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.1.11] [localport: 22] at 11:01:31 AEST Thu May 2 2024
May 2 01:01:45.760: %SYS-6-LOGOUT: User Nyrstar has exited tty session 1(10.1.1.11)
May 2 01:05:35.573: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/20, changed state to down
May 2 01:05:36.575: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/20, changed state to down
May 2 01:08:56.493: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to down
May 2 01:08:57.497: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to down
May 2 01:09:22.506: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to down
May 2 01:09:23.516: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to down
May 2 01:09:26.453: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/44, changed state to up
May 2 01:09:27.453: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/44, changed state to up
May 2 01:09:45.728: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/20, changed state to up
May 2 01:09:46.729: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/20, changed state to up
May 2 01:19:18.515: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 01:19:19.515: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 01:19:22.522: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 01:19:23.523: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 01:24:45.888: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 01:24:46.890: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 01:24:49.845: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 01:24:50.845: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 01:27:22.130: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/36, changed state to up
May 2 01:27:23.132: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/36, changed state to up
May 2 01:30:26.144: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/20, changed state to down
May 2 01:30:27.144: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/20, changed state to down
May 2 01:33:18.418: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to up
May 2 01:33:19.418: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to up
May 2 01:33:20.974: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to down
May 2 01:33:21.979: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to down
May 2 01:33:24.871: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to up
May 2 01:33:25.871: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to up
May 2 01:35:33.655: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to down
May 2 01:35:34.663: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to down
May 2 01:35:37.344: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/35, changed state to up
May 2 01:35:38.345: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/35, changed state to up
May 2 01:39:01.064: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:39:02.066: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:39:05.059: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:39:06.058: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:39:32.415: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:39:33.417: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:39:36.402: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:39:37.402: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:41:07.945: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 01:41:08.947: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 01:47:40.371: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:47:41.380: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:47:53.456: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:47:55.586: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:47:58.468: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:47:59.468: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:48:26.040: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:48:27.048: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:48:29.921: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:48:30.921: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:48:49.596: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:48:50.600: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:48:53.078: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:48:54.078: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:49:16.770: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:49:17.771: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:49:20.692: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:49:21.692: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:49:37.894: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:49:38.901: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:49:41.371: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:49:42.371: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:50:05.794: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 01:50:06.797: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 01:50:09.777: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 01:50:10.777: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 01:54:25.257: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to up
May 2 01:54:26.257: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to up
May 2 01:54:34.624: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to down
May 2 01:54:35.628: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to down
May 2 01:54:42.686: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to up
May 2 01:54:43.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to up
May 2 01:58:49.113: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/35, changed state to down
May 2 01:58:50.115: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/35, changed state to down
May 2 01:59:08.601: %SW_MATM-4-MACFLAP_NOTIF: Host 0a3e.e888.f108 in vlan 40 is flapping between port Gi4/0/13 and port Po10
May 2 01:59:38.434: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/47, changed state to down
May 2 01:59:39.436: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/47, changed state to down
May 2 01:59:47.796: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/47, changed state to up
May 2 01:59:48.797: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/47, changed state to up
May 2 02:01:30.060: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.1.11] [localport: 22] at 12:01:30 AEST Thu May 2 2024
May 2 02:01:44.051: %SYS-6-LOGOUT: User Nyrstar has exited tty session 1(10.1.1.11)
May 2 02:18:13.841: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:14.842: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:17.814: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:18.814: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:25.984: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:26.989: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:29.857: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:30.857: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:38.040: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:39.042: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:42.064: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:43.064: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:46.909: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:47.912: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:18:50.842: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:18:51.842: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:20:16.429: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:20:17.429: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:20:20.530: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 02:20:21.532: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 02:20:24.491: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:20:25.491: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:23:57.155: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:23:58.156: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:24:01.034: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:24:02.035: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:24:08.827: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:24:09.830: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:24:12.904: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:24:13.905: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:24:17.800: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:24:18.803: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:24:21.776: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:24:22.775: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:28:05.251: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 02:28:06.252: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 02:28:14.583: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:28:15.582: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:29:42.499: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to down
May 2 02:29:43.506: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
May 2 02:29:46.471: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
May 2 02:29:47.472: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/43, changed state to up
May 2 02:31:51.204: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 02:31:52.206: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 02:32:28.578: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:32:29.578: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:36:23.016: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 02:36:24.019: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 02:36:27.687: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:36:28.689: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:37:19.354: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 02:37:20.355: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 02:37:23.979: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:37:24.980: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:37:42.982: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 02:37:43.984: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 02:37:46.892: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to up
May 2 02:37:47.892: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to up
May 2 02:48:32.863: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/27, changed state to down
May 2 02:48:33.871: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/27, changed state to down
May 2 02:51:35.859: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to down
May 2 02:51:36.867: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to down
May 2 02:51:42.198: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to up
May 2 02:51:43.198: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to up
May 2 02:52:23.596: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to down
May 2 02:52:24.603: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to down
May 2 02:52:27.672: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to up
May 2 02:52:28.671: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to up
May 2 02:56:06.137: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to down
May 2 02:56:07.138: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to down
May 2 02:56:12.471: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to up
May 2 02:56:13.472: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to up
May 2 02:56:55.131: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to down
May 2 02:56:56.135: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to down
May 2 02:56:59.217: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/30, changed state to up
May 2 02:57:00.217: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/30, changed state to up
May 2 03:01:32.115: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.1.11] [localport: 22] at 13:01:32 AEST Thu May 2 2024
May 2 03:01:46.240: %SYS-6-LOGOUT: User Nyrstar has exited tty session 1(10.1.1.11)
May 2 03:17:52.989: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/42, changed state to down
May 2 03:17:53.991: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/42, changed state to down
May 2 03:30:09.828: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/20, changed state to up
May 2 03:30:10.827: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/20, changed state to up
May 2 03:45:05.607: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to down
May 2 03:45:06.609: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to down
May 2 03:45:09.040: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/22, changed state to up
May 2 03:45:10.040: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/22, changed state to up
May 2 04:00:13.507: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to down
May 2 04:00:14.510: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to down
May 2 04:01:30.003: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.1.11] [localport: 22] at 14:01:30 AEST Thu May 2 2024
May 2 04:01:44.280: %SYS-6-LOGOUT: User Nyrstar has exited tty session 1(10.1.1.11)
May 2 04:14:02.692: %SMART_LIC-3-EVAL_EXPIRED_WARNING: Evaluation period expired on Oct 05 14:12:08 2021 AEST
May 2 04:16:02.854: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/0/20, changed state to down
May 2 04:16:03.856: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/20, changed state to down
May 2 04:17:15.102: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/16, changed state to up
May 2 04:17:16.102: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/16, changed state to up
May 2 04:18:13.550: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet6/0/18, changed state to down
May 2 04:18:14.553: %LINK-3-UPDOWN: Interface GigabitEthernet6/0/18, changed state to down
May 2 04:21:04.289: %SSH-4-SSH2_UNEXPECTED_MSG: Unexpected message type has arrived. Terminating the connection from 10.1.2.23
May 2 04:21:04.495: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.2.23] [localport: 22] at 14:21:04 AEST Thu May 2 2024
May 2 04:27:56.293: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
May 2 04:27:57.295: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
May 2 04:28:00.263: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to up
May 2 04:28:01.264: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to up
May 2 04:30:07.242: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/8, changed state to down
May 2 04:30:08.278: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/8, changed state to down
May 2 04:34:17.419: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/8, changed state to up
May 2 04:34:18.420: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/8, changed state to up
May 2 04:51:31.898: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/27, changed state to up
May 2 04:51:32.897: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/27, changed state to up
May 2 04:55:57.524: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to up
May 2 04:55:58.524: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to up
May 2 04:55:59.773: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to down
May 2 04:56:00.775: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to down
May 2 04:56:03.720: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/32, changed state to up
May 2 04:56:04.721: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/32, changed state to up
May 2 05:01:29.369: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.1.1.11] [localport: 22] at 15:01:29 AEST Thu May 2 2024
May 2 05:01:43.581: %SYS-6-LOGOUT: User Nyrstar has exited tty session 1(10.1.1.11)
May 2 05:03:41.367: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet5/0/36, changed state to down
May 2 05:03:42.370: %LINK-3-UPDOWN: Interface GigabitEthernet5/0/36, changed state to down
May 2 05:06:28.057: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/40, changed state to down
May 2 05:06:29.060: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/40, changed state to down
May 2 05:07:47.598: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: Nyrstar] [Source: 10.40.98.50] [localport: 22] at 15:07:47 AEST Thu May 2 2024
May 2 05:12:49.000: %SYS-6-TTY_EXPIRE_TIMER: (exec timer expired, tty 2 (10.1.2.23)), user Nyrstar
May 2 05:12:49.000: %SYS-6-LOGOUT: User Nyrstar has exited tty session 2(10.1.2.23)
May 2 05:13:06.110: %SYS-5-CONFIG_I: Configured from console by Nyrstar on vty0 (10.40.98.50)
May 2 05:14:55.020: %SYS-5-CONFIG_I: Configured from console by Nyrstar on vty0 (10.40.98.50)
May 2 05:15:56.465: %LINK-3-UPDOWN: Interface GigabitEthernet4/0/19, changed state to up

[Leo Laohoo]

I am not seeing anything wrong here.  

What, exactly, is the problem?

[lachimip]

This interface automatically goes down and comes back again after few second. this occurs every after few minutes.

[Leo Laohoo]

But look at the time of those interfaces going down/up.   This is happening outside office hours.  

[balaji.bandi]

is the port going up and down is the issue - this is normal when the device leave the network (or is this automatically going up and down is the issue ?)

or mac flapping as per the logs ?

what IOS XE code running, try upgrading the latest Code IOS XE - 17.3.6 or higher ?

[lachimip]

Cisco IOS XE Software, Version 16.12.05b

[MHM Cisco World]

First shutdown all interface appear in log

Show error disable <- share it here 

MHM

[Georg Pauwen]

Hello,

what devices (e.g. Windows 11 client machines) are connected to these ports ?