Re: [rrg] IPv4 & IPv6 routing scaling problems

[Christopher Morrow <[e-mail]>]

On Sun, Feb 14, 2010 at 3:24 PM, Christopher Morrow
<[e-mail]> wrote:
> On Sun, Feb 14, 2010 at 3:11 PM,  <[e-mail]> wrote:
>> In einer eMail vom 14.02.2010 17:00:37 Westeuropäische Normalzeit schreibt
>
>> Consider that there are more than 10,000 egress DFZ-routers ! 184 756 times
>> 10 000 = 1 847 560 000 shortest routes. However there are multitudes
>> thereof, if you envisioned (loopfree of course) detours as well! And if you
>> envisioned that DFZ routers have more than 4 neighbor nodes (BTW, can anyone
>> provide useful valid figures so that we can discuss density issues and
>> aspects?)
>
> a T1600 has 8 slots of 4 PIC's each, you can get 1x10G for each PIC.
> a CRS1 (full-height) chassis has 16 slots, 4x10G on each I believe?
>
> you can get this sort of info, as an approximation of connectedness of
> a node from every vendor's website.

oops, keeping in mind that's physical interfaces, with some MPLS
schemes the 'dfz' router could be connected to each DFZ router in the
same ASN over a logical link (LSP), so... a single DFZ router could
have (in the case of a moderate network, with US only coverage)
something like 80+ neighbors over these logical paths.

-chris