[c-nsp] Future Design

[Shaun]

I currently have a 3750 trunked to multiple 2950's, the 3750 is also doing 
bgp with my provider, i have about 75 vlans and two /22's.

# Current Design
################
Provider
   |
   |
   |BGP
   |
   |
3750-EMI
   |
   |
   |trunk
   |
   |
   -----------------------------------
   |              |              |          |           |
2950G  2950G  2950G  2950G  2950G



I recently accuired a 7206VXR and now want to implement this into my network 
but i'm a bit confused about the best way to do this.   I know that the 
7206VXR will take over bgp between my provider.  I'm mainly confused about 
what i would run between the 7206VXR and my 3750.  Most of the docs i've 
read say to just set the default route to the 7206VXR on the 3750 and i 
assume i do the same on the 7206VXR (send traffic to the 3750).  It makes 
sense for the drawling below but i plan on adding another 3750 and 7206VXR 
in the next few months and would rather set everything up so that i can 
easily just add the equipment in the future.

Here is what my new setup will look like
##########
Provider
   |
   |
   |BGP
   |
   |
7206VXR
   |
   |
   |???
   |
   |
3750-EMI
   |
   |
   |trunk
   |
   |
   -----------------------------------
   |              |              |          |           |
2950G  2950G  2950G  2950G  2950G



and here is what my setup will look like in the future...
#############
PROVIDER-A          PROVIDER-B
   |                                      |
   |                                      |
   |BGP?                             |BGP?
   |                                      |
   |                                      |
7206VXR-------------7206VXR
   |\                                    /|
   | \________  ________/ |
   |                  \/                  |
   |???             /\                  |???
   |  _______/  \________  |
   | /                                  \ |
   |/                                    \|
3750-EMI-----------3750-EMI
   |\                                    /|
   | \________  ________/ |
   |                  \/                  |
   |trunk          /\        trunk  |
   |  _______/  \________  |
   | /                                  \ |
   |/                                    \|
2950G                          2950G


My biggest question here i guess is what do i run between my 7206VXR's and 
my 3750's?  I've seen a few examples that show iBGP but i'm not sure if 
thats the best solution.  Also, is it correct to run a connection from 
router1 to router2? if so, do i trunk these?  same with the 3750, run the 
connecton beween them and trunk?

Sorry if these are basic questions, i'm no expert at this stuff and just 
want to make sure i'm headed in the right direction. I am excited to start 
learning/getting more in HA/redundancy!  Also the 3750's will be running 
HSRP v2 on each vlan.

~Shaun