I'm having my googlefu fail me. I have a rather complicated network that has grown organically that now is running a mix of IBM / BladeOS switches that are doing VLANs and MST for spanning tree, connected to edge HP Procurve switches of all vintages. I've worked out (more or less) a method to map the physical connections between 2 nodes on a VLAN.
R1 = Root Bridge
S1-S3 = Blade MST configured switches
S4-7 = HP Procurve switches with no STP or RSTP only
1-2 = Nodes
If Node 1 wants to talk at L2 (all on same VLAN and subnet) to Node 2, if it sends out a frame on a fully learned network - what path would it take?
From what I can work out according to my reading and the videos I've watched, even though the human "obvious path" would be 1-s6-s4-s2-s1-s3-s5-s7-2
It actually has to go to the logical root bridge unless node 2 was also connected to s6 rather than s7 as it currently is. I.e. the ethernet frames from 1 to 2 actually also go through R1
Is this right? Or is the root bridge irrelevant here as we're staying in the same VLAN?