Re: OT - eBGP ISP route manipulation

Could you not filter with a route-map and calculate the correct inverse mask to being on only the routes you want? IPX and INE both have these funky subnet tricks on them, although I've never had to use a mask of 27.255.252.255 to achieve your goal.

I hope that makes sense. ;)

Regards,
Jay McMickle- 2x CCIE #35355 (R/S,Sec)
Sent from my iPhone 5

On Jun 24, 2013, at 2:58 PM, Joe Sanchez <marco207p_at_gmail.com> wrote:

> All,
>
> Here is a good one. Let's say you have a connection to an ISP and they are
> sending you a 1.0.0.0/8 but you only want to able to reach 1.5.1.35 and
> 1.5.0.163 and you want BGP to run for the dynamic routing, but do not want
> to see the 1.0.0.0/8 becuase you are routing that network somewhere else.
> You are not limited to anything other than the ISP will not change anything
> and you must keep it as simple as possible.
>
> I've labbed this up with these things in mind.
>
> CPE (customer side)
>
> unsuppress-map (doesn't work)
> inject-map (didn't work)
> ip-sla (didn't try yet, with static routes et...)
> enhanced object tracking with IP-SLA using boolean and(or) ( haven't tried
> this yet).
>
> Let me know what you guys/gals think...
>
> Joe Sanchez
>
>
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Received on Mon Jun 24 2013 - 15:30:33 ART