SG5201-0848-F6 spaning tre problem

Shkelqim_Kajtaz — Mon, 12 Jun 2017 20:32:00 GMT

Dear all i have a big problem, every seconds my topology changes i think i got spaning tree in some switches, can someone help me how to find it 😞

2017-06-12 17:30:58 Local0 Notice 10.10.7.37 Jun 12 17:30:56 10.10.7.37 NOTICE: Topology changed (Instance:0, Port:24,MAC:20-B3-99-79-FA-E7) 2017-06-12 17:30:58 Local0 Notice 10.10.7.62 Sep 13 02:51:36 10.10.7.62 NOTICE: Topology changed (Instance:0, Port:28,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:58 Local0 Notice 10.10.7.17 Jun 12 17:30:56 10.10.7.17 NOTICE: Topology changed (Instance:0, Port:24,MAC:20-B3-99-7A-0B-E1) 2017-06-12 17:30:58 Local0 Notice 10.10.7.64 Apr 3 20:57:59 10.10.7.64 NOTICE: Topology changed (Instance:0, Port:23,MAC:00-17-59-F6-B6-80) 2017-06-12 17:30:58 Local0 Notice 10.10.7.21 Jun 12 17:30:56 10.10.7.21 NOTICE: Topology changed (Instance:0, Port:48,MAC:20-B3-99-7A-11-43) 2017-06-12 17:30:58 Local0 Notice 10.10.7.65 Jun 12 17:30:56 10.10.7.65 NOTICE: Topology changed (Instance:0, Port:28,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:58 Local0 Notice 10.10.7.41 Jun 12 17:30:56 10.10.7.41 NOTICE: Topology changed (Instance:0, Port:24,MAC:20-B3-99-7A-0A-39) 2017-06-12 17:30:58 Local0 Notice 10.10.7.12 Jun 12 17:30:55 10.10.7.12 NOTICE: Topology changed (Instance:0, Port:48,MAC:20-B3-99-75-2B-81) 2017-06-12 17:30:58 Local0 Notice 10.10.7.25 Jun 12 17:30:55 10.10.7.25 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:58 Local0 Notice 10.10.7.32 Jun 12 17:30:56 10.10.7.32 NOTICE: Topology changed (Instance:0, Port:24,MAC:20-B3-99-7A-0D-54) 2017-06-12 17:30:57 Local0 Notice 10.10.7.18 Jun 12 17:30:56 10.10.7.18 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.30 Jun 12 17:30:56 10.10.7.30 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.40 Jun 12 17:30:56 10.10.7.40 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.35 Jun 12 17:30:56 10.10.7.35 NOTICE: Topology changed (Instance:0, Port:48,MAC:20-B3-99-72-9E-FE) 2017-06-12 17:30:57 Local0 Notice 10.10.7.36 Jun 12 17:30:55 10.10.7.36 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.28 Jun 12 17:30:56 10.10.7.28 NOTICE: Topology changed (Instance:0, Port:24,MAC:20-B3-99-7A-14-FD) 2017-06-12 17:30:57 Local0 Notice 10.10.7.20 Jun 12 17:30:56 10.10.7.20 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.43 Jun 12 17:30:55 10.10.7.43 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.59 Jan 8 02:39:25 10.10.7.59 NOTICE: Topology changed (Instance:0, Port:28,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.14 Jun 12 17:30:56 10.10.7.14 NOTICE: Topology changed (Instance:0, Port:24,MAC:20-B3-99-75-1B-90) 2017-06-12 17:30:57 Local0 Notice 10.10.7.16 Jun 12 17:30:56 10.10.7.16 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.26 Jun 12 17:30:56 10.10.7.26 NOTICE: Topology changed (Instance:0, Port:27,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.31 Jun 12 17:30:56 10.10.7.31 NOTICE: Topology changed (Instance:0, Port:48,MAC:20-B3-99-7A-0D-54) 2017-06-12 17:30:57 Local0 Notice 10.10.7.11 Jun 12 17:30:55 10.10.7.11 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.45 Mar 17 03:00:27 10.10.7.45 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.10 Jun 12 17:30:56 10.10.7.10 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:57 Local0 Notice 10.10.7.10 Jun 12 17:30:55 10.10.7.10 NOTICE: Topology changed (Instance:0, Port:51,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:56 Local0 Notice 10.10.7.61 Jun 21 20:20:26 10.10.7.61 NOTICE: Topology changed (Instance:0, Port:28,MAC:02-00-0A-FE-63-0A) 2017-06-12 17:30:56 Local0 Notice 10.10.7.61 Jun 21 20:20:24 10.10.7.61 NOTICE: Topology changed (Instance:0, Port:28,MAC:02-00-0A-FE-63-0A)

RE: SG5201-0848-F6 spaning tre problem

Martineau__John — Mon, 12 Jun 2017 21:06:00 GMT

The best resolve this issue is to determine where the topology change (TCN) is being generated.
"show span debug" may help this, another is to disable STP on all uplink ports and then enable it 1 at a time until it breaks again (set spantree portadmin ge.x.x disable:"Keep going downstream until you find the offender and the resolve the STP issue (looped ports?)

RE: SG5201-0848-F6 spaning tre problem

Erik_Auerswald — Tue, 13 Jun 2017 11:45:00 GMT

Hi,

there are a few GTAC Knowledge articles regarding spanning tree topology changes:

How to troubleshoot spanning tree topology changes on SecureStack, N-Series and S-Series
SpanningTree Topology Changes Seen From Downstream Device
Extreme N/S/K/7100-Series or SecureStack Seeing Large Number of Topology Changes
Spanning Tree Topology Changes on X460

The gist is to first configure spanning tree for a stable topology by configuring a dedicated root bridge and manually configuring all access ports to be STP edge ports. After that you can take a closer look at where the remaining topology changes come from.

Thanks,
Erik

topic RE: SG5201-0848-F6 spaning tre problem in ExtremeSwitching (EXOS/Switch Engine)

SG5201-0848-F6 spaning tre problem

RE: SG5201-0848-F6 spaning tre problem

RE: SG5201-0848-F6 spaning tre problem