[c-nsp] 3560 questions

[Alex Campbell]

Hi all,

I'm looking at putting two 3560Gs in front of a couple of servers in a
high-availability configuration, and hoping that someone who has tried a
similar setup could provide some guidance.  A rough diagram of the
approach I'm considering is here
http://alexjcampbell.com/3560g_diagram.gif.

Basically each 3560 will take a default route from a different provider,
and one of them will take ~2000 prefixes from a local IX.

We'll run IBGP over a port-channel between the 3560s, although I'm not
sure whether the port-channel connecting them should be configured as L2
or L3 interfaces.  Should the IBGP session be between the SVI on each
device, or between the IP on each L3 interface?

Inside the network, we'll have servers with two-port Intel server NICs,
with each port on the NIC connecting to an access port on each 3560.  It
seems the best (only?) way to uplink the servers to two different
switches is to use Intel's "Switch Fault Tolerance" feature, which
basically allows the two-port NIC to participate in STP, thus providing
L2 failover.

Both switches will have an SVI interface for the servers' VLAN, and
we'll use HSRP on the SVIs to provide L3 failover for the servers.

I guess my questions here are:
1) will this work and will it achieve full, automatic failover
throughout the network?
2) is there an easier way of achieving this?

And one more, slightly unrelated question - 
3) if our transit pipes are say 50mbps but delivered over FastEthernet,
how will the 3560s react if we start pushing 51mbps?

Any guidance or insight would be most appreciated.

Regards,

Alex