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Unstable internet with SW250-24P

Nowis
Level 1
Level 1

I have a problem of stability with the internet, I do not really understand why and how to solve it. I am novice network, it is not me who configured it ... Here are the logs

 

 

2147482627	2019-Sep-04 08:29:58	Warning	%LINK-W-Down:  fa24   
2147482628	2019-Sep-04 08:29:48	Informational	%AAA-I-CONNECT: New http connection for user cisco, source 192.168.1.111 destination 192.168.1.243 ACCEPTED   
2147482629	2019-Sep-04 08:29:43	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482630	2019-Sep-04 08:29:38	Informational	%LINK-I-Up:  fa24   
2147482631	2019-Sep-04 08:29:36	Warning	%LINK-W-Down:  fa24   
2147482632	2019-Sep-04 08:29:32	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482633	2019-Sep-04 08:29:27	Informational	%LINK-I-Up:  fa24   
2147482634	2019-Sep-04 08:29:24	Warning	%LINK-W-Down:  fa24   
2147482635	2019-Sep-04 08:29:22	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482636	2019-Sep-04 08:29:17	Informational	%LINK-I-Up:  fa24   
2147482637	2019-Sep-04 08:29:14	Warning	%LINK-W-Down:  fa24   
2147482638	2019-Sep-04 08:29:12	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482639	2019-Sep-04 08:29:07	Informational	%LINK-I-Up:  fa24   
2147482640	2019-Sep-04 08:29:05	Warning	%LINK-W-Down:  fa24   
2147482641	2019-Sep-04 08:29:01	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482642	2019-Sep-04 08:28:56	Informational	%LINK-I-Up:  fa24   
2147482643	2019-Sep-04 08:28:53	Warning	%LINK-W-Down:  fa24   
2147482644	2019-Sep-04 08:28:52	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482645	2019-Sep-04 08:28:47	Informational	%LINK-I-Up:  fa24   
2147482646	2019-Sep-04 08:28:45	Warning	%LINK-W-Down:  fa24   
2147482647	2019-Sep-04 08:28:41	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482648	2019-Sep-04 08:28:37	Informational	%LINK-I-Up:  fa24   
2147482649	2019-Sep-04 08:28:34	Warning	%LINK-W-Down:  fa24   
2147482650	2019-Sep-04 08:28:32	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482651	2019-Sep-04 08:28:27	Informational	%LINK-I-Up:  fa24   
2147482652	2019-Sep-04 08:28:25	Warning	%LINK-W-Down:  fa24   
2147482653	2019-Sep-04 08:28:17	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482654	2019-Sep-04 08:28:12	Informational	%LINK-I-Up:  fa24   
2147482655	2019-Sep-04 08:28:10	Warning	%LINK-W-Down:  fa24   
2147482656	2019-Sep-04 08:28:08	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482657	2019-Sep-04 08:28:03	Informational	%LINK-I-Up:  fa24   
2147482658	2019-Sep-04 08:28:00	Warning	%LINK-W-Down:  fa24   
2147482659	2019-Sep-04 08:27:59	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482660	2019-Sep-04 08:27:55	Informational	%LINK-I-Up:  fa24   
2147482661	2019-Sep-04 08:27:52	Warning	%LINK-W-Down:  fa24   
2147482677	2019-Sep-04 08:26:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482678	2019-Sep-04 08:25:57	Warning	%STP-W-PORTSTATUS: fa5: STP status Forwarding   
2147482679	2019-Sep-04 08:25:53	Informational	%LINK-I-Up:  fa5   
2147482680	2019-Sep-04 08:24:49	Informational	%AAA-I-DISCONNECT: http connection for user cisco, source 192.168.1.111 destination 192.168.1.243 TERMINATED   
2147482681	2019-Sep-04 08:22:08	Informational	%AAA-I-CONNECT: New http connection for user cisco, source 192.168.1.111 destination 192.168.1.243 ACCEPTED   
2147482682	2019-Sep-04 08:21:47	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482683	2019-Sep-04 08:21:42	Warning	%NT_GREEN-W-EeeLldpSingleNeighbour: Single LLDP neighbour on port fa24 - EEE operational state can be TRUE    
2147482684	2019-Sep-04 08:21:42	Informational	%LINK-I-Up:  fa24   
2147482685	2019-Sep-04 08:21:39	Warning	%LINK-W-Down:  fa24   
2147482686	2019-Sep-04 08:21:27	Warning	%NT_GREEN-W-EeeLldpMultiNeighbours: Multiple LLDP neighbours on port fa24 - EEE operational state is FALSE    
2147482687	2019-Sep-04 08:21:27	Warning	%NT_GREEN-W-EeeLldpMultiNeighbours: Multiple LLDP neighbours on port gi1 - EEE operational state is FALSE    
2147482688	2019-Sep-04 08:21:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482689	2019-Sep-04 08:16:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482690	2019-Sep-04 08:11:42	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482691	2019-Sep-04 08:11:37	Informational	%LINK-I-Up:  fa24   
2147482692	2019-Sep-04 08:11:34	Warning	%LINK-W-Down:  fa24   
2147482693	2019-Sep-04 08:11:30	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482694	2019-Sep-04 08:11:25	Informational	%LINK-I-Up:  fa24   
2147482695	2019-Sep-04 08:11:22	Warning	%LINK-W-Down:  fa24   
2147482696	2019-Sep-04 08:11:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482697	2019-Sep-04 08:06:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482698	2019-Sep-04 08:01:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482699	2019-Sep-04 07:59:04	Warning	%STP-W-PORTSTATUS: fa24: STP status Forwarding   
2147482700	2019-Sep-04 07:58:59	Informational	%LINK-I-Up:  fa24   
2147482701	2019-Sep-04 07:58:56	Warning	%LINK-W-Down:  fa24   
2147482702	2019-Sep-04 07:56:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482703	2019-Sep-04 07:51:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482704	2019-Sep-04 07:46:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482705	2019-Sep-04 07:41:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482706	2019-Sep-04 07:36:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482707	2019-Sep-04 07:31:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482708	2019-Sep-04 07:26:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482709	2019-Sep-04 07:21:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   
2147482710	2019-Sep-04 07:16:07	Warning	%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi1.   

Port 1 was unplugged until this morning because I had a problem with the device and I thought it was from him ...

Port 24 is my internet box

Port G1 is the management port of my switch (IP 192.168.1.243) to be able to see the logs. I plugged it live on my internet box.

 

Software Information
Firmware Version (Active Image):	2.5.0.83
Firmware MD5 Checksum (Active Image):	07968d912499cff5e8b07fdc24779854
Firmware Version (Non-active):	2.3.5.63
Firmware MD5 Checksum (Non-active):	5881484e04bcdcc17c32872445e3ab8d

I updated the latest firmware yesterday


Can someone help me?

3 Replies 3

Hello,

 

what device is connected to Gi1 ? 

G1 is the management port of my switch (IP 192.168.1.243) to be able to see the logs. I plugged it live on my internet box.

OK so, the logs about Gi1 are not related to your instable internet

but it is something you need to look into in the future

You may connect this management interface directly to your computer instead of via the internet box to manage the switch without creating extra log entries.

 

The Fa24 up/down messages indicate the connection to your internet box is having problems (but you knew that already)

this could be because of a faulty physical connection (cables)

or because the port-configuration on both devices are not compatible (what device is your internet box?)

and auto negotiation seems to work, but not stable

in the spirit of this last remark, try using a cross-cable between your internet box and your switch

it may be periodic MDI/MDI-X port detection causes this up/down behavior.

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