I don't know what I should be using for this or how I should go about it.

In my lab where I am testing out the BGP configs that I've learned I want my ISP topology to have a summary prefix for the Customer to see. I am peering with eBGP to the customer with 3 links. 8.1.7.0 /30 1 - 20 are allocated to this Customer for their WAN links. 

ISP has BGP built over an OSPF underlay and is peering with loopbacks

Customer is using EIGRP for IGP<br/>
On the Customer's ASBRs the only advertised address is 17.1.2.0 /24 <br/>
The addresses is aggregated after being redistributed into BGP <br/>

These are my configs for BGP on the ISP CE device<br/>
router bgp 65001<br/>
 bgp log-neighbor-changes<br/>
 network 8.1.5.0 mask 255.255.255.252<br/>
 network 8.1.7.0 mask 255.255.255.252<br/>
 network 8.8.8.2 mask 255.255.255.255<br/>
 network 17.1.2.0 mask 255.255.255.252<br/>
 neighbor 8.1.7.2 remote-as 65002<br/>
 neighbor 8.8.8.3 remote-as 65001<br/>
 neighbor 8.8.8.3 update-source Loopback0<br/>

I think I can remove the #network 17.1.2.0 command since I aggregated the route on another BGP device <br/>

When it comes to summarizing all my 8.0.0.0 /8 prefixes to AS65002 I can't figure out how. I'm pretty new to using route-maps and prefix lists and that's what I was trying to use for this project.