logical topology and other question

hello my friend ....

this is naif from Saudi Arabia on member of ine.com

i want to describe to me how the logical topology looks like .

i want to understand for exa vlan 146 related to R1 and all vlan

in the physical topology its clear but its default to me to understand in logical topology .

please listed to me all vlans and related router or switch depend on logical topology .

help me .

and i have some problem i download putty application and telnet form my laptop its give authentication failed

i am sure user name and password

and its very slow and interrupt AL the time i try to contact to support section but its not give any soulation

last question what does it mean by (upstream switch ) and (downstram
switch) in the explain of stp in the video please explain to me with
simple language and diagram


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