[nsp] Switch and Bridge confusion

[gab jones]

Hi People,

I just need opinions on this scenario. And please feel very free to correct 
me because I have put what I think is happening

I have a router that as spanning tree disabled on the ethernet interface. 
The ethernet interface is connected to a port on a switch which as spanning 
tree enabled. The connection between the router and switch is bridged.

NOTE - the router(ethernet interface) is configured to act as a bridge. And 
all devices are all on the same network.

_S2         __           __           _
| |_________|  |_________|  |_________| | S1
|_|         | R|         | R|         |_|
            |__|         |__|

R = Router(used as a bridge no spanning tree)
S = switch (both have spanning tree enabled)

1)My question is will this cause any loops on the ethernet interfaces on the 
router.
2)Will both routers learn all the mac addresses discovered by both switches
3)will S2 also know all the mac addresses on S1

__________
My answers
__________

1) I dont think it would because both routers are bridging in which case 
when a host sends a packet from S1 to a host on S2. S2 will deal with the 
loops because it has spanning tree enabled

2)Im not to sure about this one.
3)I would say yes because both routers are bridging which basically means 
the LAN is being extended

regards,
gab

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