[nsp] Customer bgp setup

[Raj P Panchal]

Dear all

We are an ISP , we are multihomed isp , we have two upstream 
providers . I have /20 block of IP addr, I have configured bgp 
with both of my upstream provider and announced two /21 on both of 
the upstreams for loadsharing and redundancy purposes . Now i have 
connected one of my customer who is having his own one class block 
of IP address . He want to use his own IP block and he is also 
having his own Registered AS no . He wants to setup BGP with us 
.
What should i do to achieve the same . Do i need to announce the 
IP block of my customer to my upstream provider or the bgp session 
between me and my customer will take care of that ???

And as a further enhancement of my services , as i am multihomed 
with two upstream providers i would like to provide same uptime to 
my customer , by annoucing his ip block with both of my upstream 
providers . Can i do that ??? If yes then wat care should i take 
so that the traffic for my customer always flows from one link , 
but in case of failure it takes up second link automatically .
pls help me out
thanks
raj