[f-nsp] NetIron MLX-4 vs Juniper MX240

[Rolf Hanßen]

Hi,

it looks to me you calculate with an amount of v6 routes similar to the
number of v4 routes today and I thinks that this won't happen.
For example: RIPE has assigned 5x IPv4 PA networks to us during the last
10 years but we only use one /32 v6 network. We furthermore had to split
up those v4 assignments because we have a split network with several
independent locations not connected together. This increased the number of
prefixes we announce very fast.
So the amount of v6 prefixes created from us will be much lower and I
think other providers may have similar spaces they use.
Even if you enable v6 for all networks currently using v4 I think total
amount will keep below 100k routes.

kind regards
Rolf


> On Tue, May 11, 2010 at 5:02 PM, Niels Bakker
> <niels=foundry-nsp at bakker.net> wrote:
>> * georgeb at gmail.com (George B.) [Wed 12 May 2010, 01:34 CEST]:
>>>
>>> And basically the reason is ... I currently show about 320,000 routes
>>> from one upstream for v4.  The MLX can handle 512,000 v4 routes in
>>> hardware.  That leaves room for about 48,000 ipv6 routes provided the
>>> v4 routing table stops growing today but exactly the opposite is going
>>> to happen.  As what remaining v4 addresses are broken into smaller
>>> pieces, the routing table is going to continue to grow with smaller
>>> prefixes.
>>
>> Ample room for growth if you follow the previous poster's advice which
>> was
>> to get an XMR if you want to future-proof your routing.
>>
>>
>>        -- Niels.
>
> Not exactly "ample".  XMR has room for 1,000,000 routes in hardware.
> That is room for 170,000 v6 routes on top of the current 320,000 v4
> routes.  Those will blow up, too.  I am guessing that the breaking
> point will be somewhere around 400,000 v4 routes and 100,000 v6
> routes. The price difference between MLX and MXR blades is pretty
> steep for no other benefit than more routes.  First vendor to get to
> market with a huge CAM resource is going to win, bigtime.  I don't
> believe any hardware currently built for the medium size market will
> handle full routes dual-stacked once v6 is the norm.
>
> George
>
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