Cisco switch C1000-HBOOT-M Port Gi48 appears up/down frequently.

[Leo2060]

Dear community,

Hope everything is fine,

I am a network administrator and recently i faced a very strange behavior. The connection port on one of our customer's switches (1000-HBOOT-M) always appears up/down frequently.
The connection status is as follows:
The G48 port of C1000 is cascaded to the core switch, and the G43 port is cascaded to the G48 port of the switch SG2250-52; the remaining interfaces of the two switches are connected to PCs, printers, and IP phones.

I checked the cascade interface and SPT protocol, and tried multiple methods, but the fault still exists.

My question is what is causing this issue and what should we investigate further to resolve this issue.

Please help. Leo.

EastSWC1000#show log
Syslog logging: enabled (0 messages dropped, 0 messages rate-limited, 0 flushes, 0 overruns, xml disabled, filtering disabled)
No Active Message Discriminator.
No Inactive Message Discriminator.
Console logging: level debugging, 2442 messages logged, xml disabled,
filtering disabled
Monitor logging: level debugging, 0 messages logged, xml disabled,
filtering disabled
Buffer logging: level debugging, 278 messages logged, xml disabled,
filtering disabled
Exception Logging: size (4096 bytes)
Count and timestamp logging messages: disabled
File logging: disabled
Persistent logging: disabled
No active filter modules.

Trap logging: level informational, 2410 message lines logged
Logging Source-Interface: VRF Name:

Log Buffer (12288 bytes):
hanged state to up
Aug 15 12:21:13.833: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:23:25.688: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:23:26.689: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:23:40.907: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:23:41.907: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:24:15.989: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:24:16.990: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:24:31.204: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:24:32.204: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:26:02.051: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:26:03.051: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:26:17.069: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:26:18.069: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:26:34.316: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:26:35.315: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:26:49.523: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:26:50.523: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:27:15.471: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:27:16.472: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:27:30.586: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:27:31.586: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:28:40.842: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:28:41.843: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:28:55.856: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:28:56.856: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:29:41.101: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:29:42.102: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:29:56.170: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:29:57.170: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:30:46.922: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:30:47.979: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 12:31:02.142: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 12:31:03.142: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:20:24.898: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to down
Aug 15 13:20:25.899: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to down
Aug 15 13:38:32.113: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to up
Aug 15 13:38:33.113: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to up
Aug 15 13:49:54.054: %SW_MATM-4-MACFLAP_NOTIF: Host 1eb5.f856.a3df in vlan 80 is flapping between port Gi1/0/3 and port Gi1/0/2
Aug 15 13:52:33.213: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 13:52:34.220: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 13:52:40.950: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 13:52:43.170: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 13:53:28.797: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:53:29.798: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:53:44.112: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:53:45.112: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:54:08.056: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 13:54:09.063: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 13:54:12.477: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 13:54:14.693: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 13:55:15.820: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:55:16.913: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:55:30.943: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:55:32.028: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:56:41.787: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:56:42.788: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:56:56.902: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:56:57.902: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:57:49.946: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:57:50.947: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 13:58:05.469: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 13:58:06.469: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 15:00:22.074: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:00:23.081: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:00:25.795: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:00:28.010: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:03:22.861: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:03:23.868: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:03:27.386: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:03:29.601: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:18:28.028: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:18:29.035: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:18:31.749: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:18:34.549: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:18:37.249: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:18:39.462: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:54:45.587: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:54:46.594: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 15:54:49.312: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 15:54:51.531: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:06:38.322: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/13, changed state to down
Aug 15 16:06:39.322: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/13, changed state to down
Aug 15 16:08:55.063: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:08:56.070: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:08:58.792: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:09:01.010: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:39:32.558: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:39:33.565: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:39:36.391: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:39:38.606: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:48:40.759: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:48:41.765: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:48:44.487: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:48:46.703: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:49:42.641: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:49:43.648: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:49:46.365: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:49:48.597: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:50:27.024: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:50:28.030: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to down
Aug 15 16:50:30.744: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:50:32.962: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/48, changed state to up
Aug 15 16:56:26.802: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 16:56:27.803: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 16:56:30.617: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to up
Aug 15 16:56:31.617: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Aug 15 16:57:32.559: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Aug 15 16:57:33.560: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/26, changed state to down
Aug 15 17:05:21.185: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/10, changed state to down
Aug 15 17:05:22.186: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/10, changed state to down
Aug 15 17:08:18.312: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/24, changed state to down
Aug 15 17:08:19.312: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/24, changed state to down
Aug 15 17:10:58.140: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/23, changed state to down
Aug 15 17:10:59.140: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/23, changed state to down
Aug 15 17:12:03.377: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/12, changed state to down
Aug 15 17:12:04.377: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/12, changed state to down
Aug 15 17:12:28.706: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/22, changed state to down
Aug 15 17:12:29.707: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/22, changed state to down
Aug 15 17:16:13.236: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/21, changed state to down
Aug 15 17:16:14.237: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/21, changed state to down

EastSWC1000# show spanning-tree

MST0
Spanning tree enabled protocol mstp
Root ID Priority 32768
Address 6c13.d52d.7100
Cost 0
Port 48 (GigabitEthernet1/0/48)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32768 (priority 32768 sys-id-ext 0)
Address 78f1.****.7000
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg FWD 20000 128.1 P2p
Gi1/0/2 Desg FWD 20000 128.2 P2p
Gi1/0/3 Desg FWD 20000 128.3 P2p
Gi1/0/4 Desg FWD 20000 128.4 P2p
Gi1/0/5 Desg FWD 20000 128.5 P2p
Gi1/0/6 Desg FWD 20000 128.6 P2p
Gi1/0/9 Desg FWD 20000 128.9 P2p
Gi1/0/14 Desg FWD 20000 128.14 P2p
Gi1/0/18 Desg FWD 200000 128.18 P2p
Gi1/0/19 Desg FWD 20000 128.19 P2p
Gi1/0/20 Desg FWD 20000 128.20 P2p
Gi1/0/25 Desg FWD 20000 128.25 P2p
Gi1/0/43 Desg FWD 20000 128.43 P2p
Gi1/0/46 Desg FWD 20000 128.46 P2p
Gi1/0/48 Root FWD 20000 128.48 P2p

MST1
Spanning tree enabled protocol mstp
Root ID Priority 4097
Address 6c13.d52d.7100
Cost 20000
Port 48 (GigabitEthernet1/0/48)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 78f1.****.7000
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg FWD 20000 128.1 P2p
Gi1/0/2 Desg FWD 20000 128.2 P2p
Gi1/0/3 Desg FWD 20000 128.3 P2p
Gi1/0/4 Desg FWD 20000 128.4 P2p
Gi1/0/5 Desg FWD 20000 128.5 P2p
Gi1/0/6 Desg FWD 20000 128.6 P2p
Gi1/0/9 Desg FWD 20000 128.9 P2p
Gi1/0/14 Desg FWD 20000 128.14 P2p
Gi1/0/18 Desg FWD 20000 128.18 P2p
Gi1/0/19 Desg FWD 20000 128.19 P2p
Gi1/0/20 Desg FWD 20000 128.20 P2p
Gi1/0/25 Desg FWD 20000 128.25 P2p
Gi1/0/43 Desg FWD 20000 128.43 P2p
Gi1/0/46 Desg FWD 20000 128.46 P2p
Gi1/0/48 Root FWD 20000 128.48 P2p

EastSWC1000#show int g1/0/48
GigabitEthernet1/0/48 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 78f1.****.7030 (bia 78f1.****.7030)
Description: CoreSW
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (30 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d01h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 791000 bits/sec, 67 packets/sec
5 minute output rate 1484000 bits/sec, 116 packets/sec
47403991 packets input, 1318568506 bytes, 0 no buffer
Received 1054811 broadcasts (701413 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 701413 multicast, 0 pause input
0 input packets with dribble condition detected
29448126 packets output, 1895940399 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

EastSWC1000#show int g1/0/43
GigabitEthernet1/0/43 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 78f1.****.**** (bia 78f1.****.****)
Description: EastSg22052
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (30 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:08, output 00:00:01, output hang never
Last clearing of "show interface" counters 1d01h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 3000 bits/sec, 4 packets/sec
5 minute output rate 10000 bits/sec, 13 packets/sec
4110807 packets input, 2373118260 bytes, 0 no buffer
Received 149467 broadcasts (91238 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 91238 multicast, 0 pause input
0 input packets with dribble condition detected
6628593 packets output, 1237168644 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

EastSWC1000#show int summary

*: interface is up
IHQ: pkts in input hold queue IQD: pkts dropped from input queue
OHQ: pkts in output hold queue OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)
TRTL: throttle count

Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-----------------------------------------------------------------------------------------------------------------
Vlan1 0 0 0 0 0 0 0 0 0
* Vlan5 0 0 0 0 0 0 0 0 0
* Vlan9 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/1 0 0 0 0 0 0 1000 2 0
* GigabitEthernet1/0/2 0 0 0 0 2000 2 3000 4 0
* GigabitEthernet1/0/3 0 0 0 0 0 0 1000 2 0
* GigabitEthernet1/0/4 0 0 0 0 0 0 11000 11 0
* GigabitEthernet1/0/5 0 0 0 0 0 0 1000 2 0
* GigabitEthernet1/0/6 0 0 0 0 0 1 3000 4 0
GigabitEthernet1/0/7 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/8 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/9 0 0 0 0 0 0 3000 5 0
GigabitEthernet1/0/10 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/11 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/12 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/13 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/14 0 0 0 0 0 0 3000 5 0
GigabitEthernet1/0/15 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/16 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/17 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/18 0 0 0 189 0 0 3000 5 0
* GigabitEthernet1/0/19 0 0 0 0 0 0 3000 5 0
* GigabitEthernet1/0/20 0 0 0 0 0 0 3000 5 0
GigabitEthernet1/0/21 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/22 0 0 0 94 0 0 0 0 0
GigabitEthernet1/0/23 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/24 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/25 0 0 0 0 0 0 3000 5 0
GigabitEthernet1/0/26 0 0 0 711 0 0 0 0 0
GigabitEthernet1/0/27 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/28 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/29 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/30 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/31 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/32 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/33 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/34 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/35 0 0 0 0 0 0 0 0 0

Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-----------------------------------------------------------------------------------------------------------------
GigabitEthernet1/0/36 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/37 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/38 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/39 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/40 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/41 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/42 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/43 0 0 0 0 2000 2 13000 13 0
GigabitEthernet1/0/44 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/45 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/46 0 0 0 0 1260000 88 662000 46 0
GigabitEthernet1/0/47 0 0 0 0 0 0 0 0 0
* GigabitEthernet1/0/48 0 0 0 0 680000 58 1274000 98 0
GigabitEthernet1/0/49 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/50 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/51 0 0 0 0 0 0 0 0 0
GigabitEthernet1/0/52 0 0 0 0 0 0 0 0 0
Te1/0/1 0 0 0 0 0 0 0 0 0
Te1/0/2 0 0 0 0 0 0 0 0 0
Te1/0/3 0 0 0 0 0 0 0 0 0
Te1/0/4 0 0 0 0 0 0 0 0 0

EastSWC1000#show version
Cisco IOS Software, C1000 Software (C1000-UNIVERSALK9-M), Version 15.2(7)E4, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2021 by Cisco Systems, Inc.
Compiled Mon 08-Mar-21 09:07 by prod_rel_team

ROM: Bootstrap program is c1000 boot loader
BOOTLDR: C1000 Boot Loader (C1000-HBOOT-M) Version 15.2(7r)E3, RELEASE SOFTWARE (fc4)

EastSWC1000 uptime is 1 week, 5 days, 6 hours, 20 minutes
System returned to ROM by power-on
System restarted at 17:11:00 UTC Sat Aug 3 2024
System image file is "flash:/c1000-universalk9-mz.152-7.E4/c1000-universalk9-mz.152-7.E4.bin"
Last reload reason: power-on

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco C1000-48P-4X-L (Marvell PJ4B (584) v7 (Rev 2)) processor (revision A0) with 524288K bytes of memory.
Processor board ID PSZ26401H9R
Last reset from Reload
3 Virtual Ethernet interfaces
52 Gigabit Ethernet interfaces
4 Ten Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : *************
Motherboard assembly number : *************
Power supply part number : *************
Motherboard serial number : *************
Power supply serial number : LIT2632AYR7
Model revision number : A0
Motherboard revision number : 2
Model number : C1000-48P-4X-L
Daughterboard assembly number : *************
Daughterboard serial number : *************
System serial number : *************
Top Assembly Part Number : *************
Top Assembly Revision Number : A0
Version ID : V02
CLEI Code Number : *************
Daughterboard revision number : 2
Hardware Board Revision Number : 0x01

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 56 C1000-48P-4X-L 15.2(7)E4 C1000-UNIVERSALK9-M

Configuration register is 0xF

[marce1000]

   - This could be a simple connectivity problem, you can also look at the port (error) counters for the involved interfaces
      to get additional info's , if any.
      The customer should configure a central syslog server on all switches to collect logs at all time ,this may provide
      extra info's when the problem occurs , but is also useful to follow up logs during normal times, 

 M.