Advertise BGP using ASA

[cisco8887]

All, 

What way would you use to advertise public IPs to ISP.

I have a range used between me and ISP for BGP connection. I am further given a range of public IP which I need to advertise to provider.

The public range will be used for natting of different traffic .

I dont' want to use null route so that BGP can see it in routing table and advertise it, what other methods would you use?

I guess sub interface taking one of the IPs from the range ? That is not scalable if you have 20 ranges for instance .

what is your thought

[Philip D'Ath]

Unless you have multiple links to the provider I would not use BGP routing.  You have nothing that can be failed over to or re-converged to.  I would stick with simple static routing.