SG500X-24 and SG500-52 stack port flap.

[karnyushin1]

Hello,

We have stack of two SG500X-24 and five SG500-52:

Current stack mode is : advanced-hybrid
Topology is Ring
Stack image auto synchronization is enabled

Unit Model Name MAC Address Software Master Status
---- -------------- ----------------- --------- -------- ------
1 SG500X-24 e0:d1:73:f4:1c:f5 1.4.7.6 Enabled master

2 SG500X-24 e0:d1:73:f4:1d:86 1.4.7.6 Enabled backup

3 SG500-52 c4:72:95:30:b0:e7 1.4.7.6 Disabled slave

4 SG500-52 c4:72:95:41:2e:7a 1.4.7.6 Disabled slave

5 SG500-52 c4:72:95:32:b4:88 1.4.7.6 Disabled slave

6 SG500-52 c4:72:95:41:2e:45 1.4.7.6 Disabled slave

7 SG500-52 00:8e:73:d4:22:14 1.4.7.6 Disabled slave

All switches connected together using SFP-H10GB-CU1M or SFP-H10GB-CU5M:

Unit Port Connected Port Administrative Operational
No. Unit Status Speed Speed
---- ----- --------- -------- -------------- -----------
1 S1-5G 3 active 5G 5G
S2-5G 2 active 5G 5G
2 S1-5G 1 active 5G 5G
S2-5G 7 active 5G 5G
3 S3 1 active 5G 5G
S4 4 active 5G 5G
4 S3 3 active 5G 5G
S4 5 active 5G 5G
5 S3 4 active 5G 5G
S4 6 active 5G 5G
6 S3 5 active 5G 5G
S4 7 active 5G 5G
7 S3 6 active 5G 5G
S4 2 active 5G 5G

After Reboot Configuration:

Current New Stack Mode Stack Ports Speed
Unit No. Unit No.
-------- -------- ------------------ ---------------------------------- -----
1 1 advanced-hybrid S1-S2-5G 5G
2 2 advanced-hybrid S1-S2-5G 5G
3 3 advanced-hybrid S3-S4 5G
4 4 advanced-hybrid S3-S4 5G
5 5 advanced-hybrid S3-S4 5G
6 6 advanced-hybrid S3-S4 5G
7 7 advanced-hybrid S3-S4 5G

SW version and boot version is latest:

Unit SW version Boot version HW version
------------------- ------------------- ------------------- -------------------
1 1.4.7.6 1.4.0.02 V04
2 1.4.7.6 1.4.0.02 V04
3 1.4.7.6 1.4.0.02 V04
4 1.4.7.6 1.4.0.02 V04
5 1.4.7.6 1.4.0.02 V04
6 1.4.7.6 1.4.0.02 V04
7 1.4.7.6 1.4.0.02 V04

Every hour or two stack port S3 and stack port S4 goes down and up (only between SG500-52 switches):

Replacing all the cisco stack cables did not help.

[raluani]

Hello,

My name is Rozana and i am an engineer from the SMB team.

I see that you are facing stack issues in your ring topology.
Could you please test if you will have the same issue using a chain topology?

Also i think it would be best if you call our support line, so we can create a case and troubleshoot your issue.

Regards

[karnyushin1]

Hello,

Changing topology to chain did not resolved the issue.

Also I tried to change stack mode to basic-hybrid, but it did not help to.

[raluani]

Hello Again,

Then i think we should create a support ticket and view the show tech outputs and logs.

Also you mentioned you changed the Cisco Stack cables - what do you use?

Regards