I'm running HSRP on H1 and H2, tracking the interfaces to the routers and between H1 & H2 Trunk link. I'm routing between R1, R2, H1 and H2's connections. I've been getting mixed reviews on the placement of the Root Bridge. I feel that the placement should be on H1 and the backup H2. Can someone help me on this concern.
H4 - 10, what are these switches and do they have any resiliency ?
It's difficult to comment too much without knowing the layout, fibre runs etc. An also are all devices connected to the edge switches singly honed.
What i would look to do is either
1) remove H3 -> H10 and dual connect each edge switch to the pair of 6500's. You could still remove the 3750's in this scenario
2) more likely as i suspect you need H3 -> H10 for port capacity, make sure you dual hone H3 -> H10 to both 6500 switches.