Re: [nsp] Accepting ips from outside our network.

From: Dale Hege (fhege@sover.net)
Date: Thu Jun 15 2000 - 19:26:50 EDT


So if the link between us and our customer goes down they will not be able
to reach our network? Should we poke holes in the traffic filters to allow
packets from our customer to enter through our transit providers?

Thanks,

-Dale

On Thu, 15 Jun 2000, Cliff Judge wrote:

> On Thu, 15 Jun 2000, Dale Hege wrote:
>
> >
> > We have recently had one of our customers who currently has 4 /24s of ours
> > want to run then with another service provider to have redundancy. We
> > currently have filters in place to remove traffic & routes comming from
> > the Internet onto our network from IPs that are within our network. Is
> > this the right thing to do? We could poke holes in our filters but should
> > we? Any advice or experience on this matter whould be great.
> >
> >
> > Thanks,
> >
> > -Dale
>
> Don't poke holes in your filters to allow advertisements of these /24's
> from any AS other than your customer; traffic from your network will
> prefer to transit the customer's other provider and he'll recieve no
> incoming traffic on the link from you. (YMMV despnding on how you
> aggregate your networks I suppose).
>
> What you SHOULD do, however, is allow your customer to announce these
> /24s to you, and send those announcements on to your peers. I.e. don't
> filter her advertisements. The Internet at large will (for the most part)
> see two announcements for each of the /24's, and this will help them on
> the quest for the elusive balanced load.
>
> -%
> Cliff Judge Network Engineer
> 301-598-0500 x2866 Cidera, Inc
>



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