cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements

CISCO SWITCHES FOR SMALL and MEDIUM BUSINESS

Introducing the next generation of Cisco Small and Medium Business Switches. Cisco is refreshing its SMB Switch portfolio. Click here  to learn more.


485
Views
0
Helpful
0
Replies
Highlighted
Beginner
Beginner

Link-Flapping on SB 350X Stack

Hi,

 

we use two SG350XG-24F as a Stack as core switches and 3 SG350XG-48T as access switches.

The stack members are connected on fiber ports 23 and 24. 

 

Each access switch is connected via DAC to each stack member. No LAG there.

We only created a LAG on port 3 of each fiber switch to our firewall. Is LAG even needed in stack mode if we dont want to use aggregation but simple failover?

 

Right now we are facing network outages and link flapping on several ports.

Any ideas?

 

Firmware is 2.4.5.71.

 

2147483556	2018-Nov-09 22:44:12	Warning	%STP-W-PORTSTATUS: te2/0/7: STP status Blocking   
2147483557	2018-Nov-09 22:43:32	Warning	%STP-W-PORTSTATUS: te2/0/7: STP status Forwarding   
2147483558	2018-Nov-09 22:42:30	Warning	%STP-W-PORTSTATUS: te2/0/12: STP status Forwarding
2147483559	2018-Nov-09 22:42:25	Warning	%STP-W-PORTSTATUS: te2/0/5: STP status Forwarding   
2147483560	2018-Nov-09 22:42:24	Warning	%STP-W-PORTSTATUS: te2/0/10: STP status Forwarding   
2147483561	2018-Nov-09 22:42:24	Warning	%STP-W-PORTSTATUS: te2/0/6: STP status Forwarding   
2147483562	2018-Nov-09 22:42:23	Notice	%STCK SYSL-N-UNITMSG: UNIT ID 2,Msg:%SYSLOG-N-LOGGING: Logging started.    
2147483563	2018-Nov-09 22:42:00	Informational	%LINK-I-Up:  te2/0/12   
2147483564	2018-Nov-09 22:41:59	Warning	%LINK-W-Down:  te2/0/12   
2147483565	2018-Nov-09 22:41:59	Warning	%STP-W-PORTSTATUS: te2/0/4: STP status Forwarding   
2147483566	2018-Nov-09 22:41:59	Warning	%STP-W-PORTSTATUS: te2/0/3: STP status Forwarding   
2147483567	2018-Nov-09 22:41:59	Warning	%STP-W-PORTSTATUS: te2/0/11: STP status Forwarding   
2147483568	2018-Nov-09 22:41:58	Warning	%STP-W-PORTSTATUS: te2/0/8: STP status Forwarding   
2147483569	2018-Nov-09 22:41:58	Informational	%TRUNK-I-PORTADDED: Port te2/0/1 added to Po1   
2147483570	2018-Nov-09 22:41:55	Informational	%LINK-I-Up:  te2/0/12   
2147483571	2018-Nov-09 22:41:55	Informational	%LINK-I-Up:  te2/0/5   
2147483572	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/4   
2147483573	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/3   
2147483574	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/11   
2147483575	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/10   
2147483576	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/8   
2147483577	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/7   
2147483578	2018-Nov-09 22:41:54	Informational	%LINK-I-Up:  te2/0/6   
2147483579	2018-Nov-09 22:41:53	Informational	%LINK-I-Up:  te2/0/1   

Kind regards,

0 REPLIES 0