bgp question

Deric Kwok deric.kwok2000 at
Wed Jan 18 13:58:09 UTC 2012

Hi Justin

Thank you

Could you tell me more about "routing registries"?

I would like to learn it

2nd questions?  Are you familiar to quagga?

ls it supporting equally multipath in different bgp connections?

Thank you so much

On Tue, Jan 10, 2012 at 7:58 PM, Justin M. Streiner
<streiner at> wrote:
> On Tue, 10 Jan 2012, Deric Kwok wrote:
>> When we get  newip, we should let the upstream know to expor it as
>> there should have rule in their side.
> Correct.  Ideally, two things happen:
> 1. You tell your upstreams and peers about the new space, and they update
> whatever prefix filters they have in place for your network.
> 2. You update you own outbound BGP filters wherever necessary so that you
> can announce the new prefix, aggregated to the extent possible, when you're
> ready.
>> how about upstream provider, does they need to let their all bgp
>> interconnect to know those our newip?
> They might.  It depends on the relationship your upstreams have with their
> neighbors.  Different providers have different criteria for what they'll
> accept and how they manage their filters.
> If your upstreams need to have their upstreams and/or peers update their BGP
> filters, it is their responsibility to notify them.  Note that this can add
> to the amount of time it will take before your direct upstreams are ready to
> accept and propagate your new prefix.
> Some providers might require that your new prefix be registered in one of
> several routing registries, and they'll update their filters based on your
> new registry data.
> jms

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