Configuring /48 Address

[VECTARE]

I have /48 address that I am now ready to configure but confuse few things:


1)  Does my tunnel endpoint addresses change from the Route /64 address provided?

2)  I am going to add 3 levels of routers,   the gateway connecting the tunnel, then 2 level of IPv6 only routers.   Does any have a suggestion on how to subnet the /48 addresses:       I am adding an image of proposed network.

3) I will have LAN off each of the routers and looking at implementing routing protocol.   I know HE supports BGP and would like to implement it.   Does anyone have any example of Cisco configuration for BGP.  

[jrocha]

1) Your tunnel endpoint address will not change, as it is not in either the routed /64 or the routed /48. You have a separate /64 for the tunnel.

3) To set up a BGP tunnel, you will need your own RIR-assigned ASN and PI space.