12-11-2016 07:45 AM - edited 03-08-2019 08:31 AM
Hello,
we have some problems with packet lost on monitoring of "non used" devices in network. non used means it is not used to internet acces just stand by.
On 1 core sw i found this while i enable debug for spaning tree
STP: VLAN0050 heard root 28722-0cf5.a4ed.f980 on Gi1/0/23
STP: VLAN0030 heard root 32798-0cf5.a4ed.f980 on Gi1/0/23
STP: VLAN0050 heard root 28722-0026.5298.c480 on Gi1/1/3
STP: VLAN0133 heard root 32901-0026.5298.c480 on Gi1/1/3
STP: VLAN0050 heard root 28722-0024.50e6.1a00 on Gi1/0/24
STP: VLAN1800 heard root 34568-0024.50e6.1a00 on Gi1/0/24
STP: VLAN0840 heard root 33608-0027.0d9c.e440 on Gi1/1/3
STP: VLAN0099 heard root 32867-0027.0d9c.e440 on Gi1/1/3
(this SW is not a root switch. The root swith is connected throught portchannel100 for vlan 50 and 30)
there are 10ths of lines per second.
But if i us show spanning-tree root, it shows always the right root ports.
On other switches connected to this sw that i have this debug messages i have this messages in log:
Returning spanning tree port stats: GigabitEthernet0/6 (46C947C)
Returning spanning tree port stats: GigabitEthernet0/7 (46C9310)
Returning spanning tree port stats: GigabitEthernet0/8 (46C91A4)
Returning spanning tree port stats: GigabitEthernet0/6 (46C947C)
Returning spanning tree port stats: GigabitEthernet0/7 (46C9310)
Returning spanning tree port stats: GigabitEthernet0/8 (46C91A4)
Have you any ide what is happening? There is no rootchange or topology change.
Solved! Go to Solution.
12-11-2016 10:00 AM
Hi -
Can you post the following:
PSC
12-11-2016 10:00 AM
Hi -
Can you post the following:
PSC
12-11-2016 02:09 PM
Everything look ok.
Can you explain what is mean STP: VLAN0099 heard root ?
And why am I receiving on one sw 20 log messages /sec with this message?
Thank you
12-11-2016 05:50 PM
Hi -
Either you're having an odd reconvergence event or you're misinterpreting the debug output. If you can post the requested information, the forum members can assist you.
PSC
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: