Configure stacking, bundling of ports for C3750X & etherchannel for VMware

2x WS-C3750X-48T Cisco switches stacking config & etherchannel config for VMware
Asked by: sunhux
Pls refer to EE thread id 27593251  where I described the BOM
list of items that I have ie:


2x WS-C3750X-48T-S      Catalyst 3750X 48 Port Data IP Base          
2x C3750X-48-IOS-S-E    C3750X-48 IP Base to IP Services factory IOS Upgrade
2x Included: CAB-STACK-50CM Cisco StackWise 50CM Stacking Cable    
16x GLC-SX-MM=  1000BASE-SX SFP transceiver module for MMF, 850-nm wavelength

I'll need to connect the above two units of WS-C3750X-48T-S (I suppose these
are distribution switches) to a pair of 6500 core switches, so I suppose the 16x
transceivers is distributed such that four pcs of the transceivers go to each of
the C3750X above & four pcs of the transceivers go to each of the 6500 switches
(as I was given 8 pcs of LC-LC fibre cables to link the pair of C3750X to the
 pair of 6500 core switches together).

There's no VSS (Virtual Switching System?) between the pair of 6500 switches.


Q1:
I suppose I can't configure a bundle of 8 fibre connections but 2 pairs of 4
fibre connections since there's no VSS, right?  So how does the configuration
on my C3750X's ports (that has a GLC-SX-MM transceiver inserted into it)
look like if I'm configuring 2 pairs of 4 fibre per pair?  Is it like the following:
  int giga 1/0/x
    spanning-tree portfast
    duplex full
    speed gigabit (or auto-sense?)

Q2:
For stacking between the two C3750X, is it just a matter of joining them
together using stacking cable ie " connect sw1 stack1 to sw2 stack 2,
  sw1 stack2 to sw2 stack 1"  or on the C3750X switches, there's some
 configuration needed or on the stacking ports some config is needed?
 How do those configuration look like?  Pls provide exact sample config
 if any

Q3:
I'm setting up an ESX server which has multiple VMs in it.  Will be
'bundling' or 'aggregating' four gigabit NIC ports on the ESX server
(IBM x3850 & x3650) to the switches.  I suppose for the server,
2 NIC ports will connect to one C3750X switch while the other 2
NIC ports will connect to the other C3750X switch.  I was told I'll
need to configure 'etherchannel' on the C3750X switches.  Pls
provide me with the exact config.  Does the four NIC ports
configured in such a way provide a total 4Gbps or it's just 2Gbps
(ie live/standby pair)?  I was told the switch (or is it the server
hardware?)  needs to support VMware's  "VLAN tagging",  so is
there any specific configuration on the C3750X to provide this
 "VLAN tagging" ?