How to detect and repair trouble in one Bridge port

burgas · 01-13-2022, 03:57 PM

Hello, I have a workable kvm virtual bridges. In one bridge one port don't working.
On the first screen (left side) is result of

Code:

brctl show br2
brctl showmacs br2

On the right you can see VM connected to this bridge.157.XX.XX.81 is IP of this VM, 157.XX.XX.82 is peer VM in another port in this bridge, 157.XX.XX.65 is my gateway. All VM working perfectly and can his packages can rich gateway. Except one VM connected to virtual port vnet31. Current VM can see any other VM in this bridge and any other VM can see current VM.

Traffic going through this bridge perfectly, in terabyte size, except one port (11 mb maybe only my attempt to ping and other experiments) - second screenshot.

Ip route in this VM is correct and looks as route in any other VM in this bridge

Code:

ip route
default via 157.XX.XX.65 dev ens3
157.XX.XX.64/27 dev ens3 proto kernel scope link src 157.XX.XX.81

I can not understand this trouble. Any attempt to reset network Up/Down bridge interface, connect/disconnect VM from port was filed. This is Ubuntu 20.10.

business_kid · 01-20-2022, 06:04 AM

You're describing a fairly complicated system, but giving us none of the basic information anybody needs to get up to speed, or told us none of what you have tried. We don't even know the OS, Distro, what controls your VM, if your OS is up to date, nothing.

I'd let your sysadmin sort it. If you're the sysadmin, you offer no help yourself, just use the site to solve your problems. It should be give and take here.

pingu_penguin · 02-01-2022, 03:56 AM

I sense english is not really your first language, so you have trouble describing your problem.

Are you saying that , VM with IP ending in 81 is not able to reach the gateway at 65 , where all others are able to ?