If you have less than a /24 and you are going to do bgp with multiple
providers, it is a borderline waste of time. I agree that if you are
singlehomed, or are multihomed and already have a /24, getting additional
ips is work, reason being is because the providers have to justify it to
Arin.
I'll restate the keypoint again, if you are going to do BGP in a
multihomed setup, it should be a requirement that 1 provider give you at
least a /24, and you should work it out with the other providers to route
the block from the first.
I do not have a problem with the above Arin policy, personally I'd love to
see mandatory usage guidelines out of the old class a/b blocks that were
being
assigned in years past.
Sounds like a nanog post..
Brian "Sonic" Whalen
Success = Preparation + Opportunity
On Sat, 9 Jun 2001, John Neiberger wrote:
> With our providers, when we request new addresses we have to be able to
> justify them. By that I mean they want to see that we will actually be
> using 80% of the assigned addresses within three months. In the case of a
> company wanting to multihome some web servers, chances are that they're
> really only going to use a handfull of addresses.
>
> So (and I admit I've had to do this myself--twice) you have to fib when you
> apply for the addresses. If you were to say that you only intended to
> use 10 addresses but you really need an entire /24, they might not approve
> it. Our current provider, Sprint, would *not* approve a /24 assignment on
> my first request when I stated our actual usage expectations.
Miraculously,
> by the time of our second request our usage expectations had risen
> enormously. :-)
>
> | Re the below, if you decide after some consideration that you want
> | different links from different isps, by default if you tell them you're
> | going to do that, you should be able to get at least a /24. If you
> cannot
> | get that after telling them you're multihoming, cross em off your list.
> |
> | Brian
> |
> | >
> | > Yet another related issue is that of getting at least a /24 so that
> your
> | > routes won't get filtered. Many ISPs filter prefixes with masks
longer
> than
> | > /24. If you don't really need a /24 but you really want redundancy,
> you're
> | > still wasting addresses that might have been used better elsewhere.
> | >
> | >
> | > Regards,
> | > John
> | >
> | >
> | >
> | >
> | >
> | > _______________________________________________________
> | > Send a cool gift with your E-Card
> | > http://www.bluemountain.com/giftcenter/
> | >
> | >
> | >
> | >
> | >
> |
>
>
>
>
>
> _______________________________________________________
> Send a cool gift with your E-Card
> http://www.bluemountain.com/giftcenter/
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=7868&t=7835
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