Want to know how can we stop topology change notification from specific network switch connected (Switch-Switch) over trunk port?
I used the spanning tree portfast trunk command but its still show me in sh spanning details as topology has changed
Is there any other way we can stop the TCN?
If you are trunking to the access switches then you will get TCNs when the access layer switches are disconnected. If you don't need multiple vlans for your end users in this location then convert the trunk from the upstream switch to an access port and connect your downstream access switch to that port.
You will need to check the layer 2 port security on your upstream switch and be aware that you are more susceptible to L2 spanning tree issues if the users get creative with patching. Best to educate the end users on leaving the infrastructure as they found it.
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Do you have the option of running two physical cables to the access switch in the meeting room?
If so, you can run two different access mode interfaces in two different VLANs. (One for management and one for data)
If this is not possible, I am not sure what your best option is.. if you REALLY want to filter out the TCN BPDUs even though I do not recommend it, you could probably make a MAC address ACL on the upstream switch and filter them out.