[c-nsp] redistribute bgp subnet

[Darren O'Connor]

You can run BGP with your customer. Set aside some of your address space for p2p customer links and the range you assign to the customer sits behind their router. 

Make your customers use private AS numbers and you ensure that those AS numbers are stripped outbound to your ISP. Of course you need to advertise an aggregate to your ISP.

So something like this:

/29 - [Customer Router]----BGP /30---- [Your router] --BGP-- [Your ISP]

Darren
http://www.mellowd.co.uk/ccie


> Date: Wed, 14 Aug 2013 21:25:48 -0500
> From: danletkeman at gmail.com
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] redistribute bgp subnet
> 
> Hello,
> 
> Excuse my ignorance, as this is my first time working with BGP outside of a
> lab.
> 
> I am working on an ASR that is in use as a BGP peer to an ISP and also an
> EIGRP neighbor to an internal network.  I have setup this router for
> NAT/PAT and all is working well for the internal private subnets.  These
> network are routed to the main public subnet based on the source ip range.
> 
> Now there is also a separate public IP subnet that is set aside for
> customer use and is being advertised via BGP to the ISP.  What I would like
> to do is route that subnet through the ASR to the customers site for use by
> them.
> 
> I'm sure this is very simple for most, but I'm not sure where to start.
> 
> 
> Thanks for now.
> Dan.
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