[afnog] BGP

[Mark Elkins]

On Mon, 2014-07-21 at 17:58 +0200, Saul wrote:
> Hi
> 
> We have an interesting situation with one of our peers that I am not
> sure how to deal with. (And no, de-peering from them isn’t an option)
> 
>  
> 
> On average we get about 380-400 prefixes from them. But on a daily
> basis they flood us with prefixes from them – well in excess of double
> that. I have a max prefix set to 650 and their session still get taken
> down – twice today already! I have a warning threshold, but it just
> goes to max and then down again….
> 
>  
> 
> I know that these guys aren’t great, their announcements aren’t the
> same everywhere and they aren’t very communicative.
> 
>  
> 
> Any suggestions as to what to do to protect myself?

If its the extra prefixes you don't like (and you don't want to accept
the "double" feed), then add filters.

You could add a path filter if the badness comes from a particular ASN
or prefix filters if there is total confusion.

You'd be left with maintaining your filters though.

If using a Cisco, run an (expect) script to capture the table every now
and again?


> I have thought of dampening, but my understanding of that is for
> routes that flap – not extra routes
> 
>  
> 
>  
> 
> Regards,
> 
> 
>  
> 
> 
>  
> 
> 
> Saul
> Stein
> 
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-- 
Mark James ELKINS  -  Posix Systems - (South) Africa
mje at posix.co.za       Tel: +27.128070590  Cell: +27.826010496
For fast, reliable, low cost Internet in ZA: https://ftth.posix.co.za
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