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Hello all,
Every 15min and sometimes every half an hour I get this message in my log file of N2048 series switch.
<189> Nov 20 14:47:52 d3sw1-1 TRAPMGR[dot1s_task]: traputil.c(795) 84096054 %% NOTE Spanning Tree Topology Change Received: MSTID: 0 Gi1/0/48
<189> Nov 20 14:47:50 d3sw1-1 TRAPMGR[dot1s_task]: traputil.c(795) 84095826 %% NOTE Spanning Tree Topology Change Received: MSTID: 0 Gi1/0/48
Does that mean there is a loop somewhere? Where should I start troubleshooting this?
d3sw1(config)#show spanning-tree mst-configuration
Name: F8-34-56-50-2B-11
Revision: 0
Instance Vlan Mapped
---------- -----------------------------------------------
0 1,15,25,32,34,100,212,236,3034-3065,3108,3128-3129,3500-3502,3560,3570,3576,3592,3594,3970
----------------------------------------------------------
d3sw1(config)#show spanning-tree
Spanning Tree : Enabled
BPDU Flooding : Disabled
Mode : mst
Portfast BPDU Filtering : Disabled
Portfast BPDU Guard : Disabled
CST Regional Root : 80:00:F8:B1:56:50:2B:10
Regional Root Path Cost : 0
###### MST 0 Vlan Mapped: 1,15,25,32,34,100,212,236,3034-3065,3108,3128-3129,3500-3502,3560,3570,3576,3592,3594,3970
ROOT ID
Priority 16384
Address 0C29.EFSD.1D20
Path Cost 43383
Root Port Gi1/0/48
Hello Time: 2s Max Age: 20s Forward Delay: 15s Transmit Hold Count: 6s
Bridge Max Hops: 20
Bridge ID
Priority 32768
Address F8B1.6658.2411
Hello Time: 2s Max Age: 20s Forward Delay: 15s Transmit Hold Count: 6s
Name State Prio.Nbr Cost Sts Role RestrictedPort
--------- -------- --------- --------- ---- ----- --------------
Gi1/0/1 Enabled 128.1 0 DIS Disb No
Gi1/0/2 Enabled 128.2 0 DIS Disb No
Gi1/0/3 Enabled 128.3 0 DIS Disb No
Gi1/0/4 Enabled 128.4 0 DIS Disb No
Gi1/0/5 Enabled 128.5 0 DIS Disb No
Gi1/0/6 Enabled 128.6 0 DIS Disb No
Gi1/0/7 Enabled 128.7 0 DIS Disb No
Gi1/0/8 Enabled 128.8 0 DIS Disb No
Gi1/0/9 Enabled 128.9 0 DIS Disb No
Gi1/0/10 Enabled 128.10 20000 FWD Desg No
Gi1/0/11 Enabled 128.11 20000 FWD Desg No
Gi1/0/12 Enabled 128.12 20000 FWD Desg No
Gi1/0/13 Enabled 128.13 20000 FWD Desg No
Gi1/0/14 Enabled 128.14 20000 FWD Desg No
Gi1/0/15 Enabled 128.15 20000 FWD Desg No
Gi1/0/16 Enabled 128.16 20000 FWD Desg No
Gi1/0/17 Enabled 128.17 20000 FWD Desg No
Gi1/0/18 Enabled 128.18 20000 FWD Desg No
Gi1/0/19 Enabled 128.19 0 DIS Disb No
Gi1/0/20 Enabled 128.20 0 DIS Disb No
Gi1/0/21 Enabled 128.21 0 DIS Disb No
Gi1/0/22 Enabled 128.22 0 DIS Disb No
Gi1/0/23 Enabled 128.23 0 DIS Disb No
Gi1/0/24 Enabled 128.24 0 DIS Disb No
Gi1/0/25 Enabled 128.25 0 DIS Disb No
Gi1/0/26 Enabled 128.26 0 DIS Disb No
Gi1/0/27 Enabled 128.27 0 DIS Disb No
Gi1/0/28 Enabled 128.28 0 DIS Disb No
Gi1/0/29 Enabled 128.29 0 DIS Disb No
Gi1/0/30 Enabled 128.30 0 DIS Disb No
Gi1/0/31 Enabled 128.31 0 DIS Disb No
Gi1/0/32 Enabled 128.32 0 DIS Disb No
Gi1/0/33 Enabled 128.33 0 DIS Disb No
Gi1/0/34 Enabled 128.34 0 DIS Disb No
Gi1/0/35 Enabled 128.35 0 DIS Disb No
Gi1/0/36 Enabled 128.36 0 DIS Disb No
Gi1/0/37 Enabled 128.37 0 DIS Disb No
Gi1/0/38 Enabled 128.38 0 DIS Disb No
Gi1/0/39 Enabled 128.39 20000 FWD Desg No
Gi1/0/40 Enabled 128.40 20000 FWD Desg No
Gi1/0/41 Enabled 128.41 20000 FWD Desg No
Gi1/0/42 Enabled 128.42 0 DIS Disb No
Gi1/0/43 Enabled 128.43 20000 FWD Desg No
Gi1/0/44 Enabled 128.44 20000 FWD Desg No
Gi1/0/45 Enabled 128.45 0 DIS Disb No
Gi1/0/46 Enabled 128.46 20000 FWD Desg No
Gi1/0/47 Enabled 128.47 0 DIS Disb No
Gi1/0/48 Enabled 128.48 20000 FWD Root No
Te1/0/1 Enabled 128.49 0 DIS Disb No
Te1/0/2 Enabled 128.50 0 DIS Disb No
----------------------------------------------------------------
Any ideas/suggestions please? Do you see anything wrong in my config?
Many thanks
