IP renumbering timeframe
Marshall Eubanks
tme at multicasttech.com
Thu May 30 14:15:50 UTC 2002
On Thu, 30 May 2002 09:48:50 -0400
Valdis.Kletnieks at vt.edu wrote:
> On Thu, 30 May 2002 09:20:17 EDT, Leo Bicknell <bicknell at ufp.org> said:
>
> > Since you have to connect to two or more providers to get an ASN,
> > and since the whole reason to have an ASN is to inject things into
> > the DFZ it doesn't seem like it would increase routing table size
> > by a huge amount. It would eliminate one whole paperwork/justification
> > step (for your first address allocation). For subsequent allocations
> > there is an example (that /24) of how efficiently the ISP uses the
> > space.
>
> Unless I'm missing something, it will double the size of it, since that
> /24 out of that /8 won't aggregate with their other address space.
> (Hint - our AS has 198.82/16 and 128.173/16 and some other small blocks -
> how many routes do YOU see for us?)
Dear Valdis;
If you mean AS 1312 VA-TECH-AS , we see 4 routes :
* 63.164.28.0/22 160.81.38.225 9 0 1239 7066 1312 i
* 166.61.8.89 0 145 11537 7066 1312
i
* 157.130.46.53 300 701 1239 7066 1312
i
*> 216.177.55.5 500 15076 1239 7066
1312 i
* 128.173.0.0 157.130.46.53 300 701 1239 7066 1312
i
* 166.61.8.89 0 145 11537 7066 1312
i
*> 216.177.55.5 500 15076 1239 7066
1312 i
* 160.81.38.225 9 0 1239 7066 1312 i
* 192.70.187.0 157.130.46.53 300 701 1239 7066 1312
i
* 166.61.8.89 0 145 11537 7066 1312
i
*> 216.177.55.5 500 15076 1239 7066
1312 i
* 160.81.38.225 9 0 1239 7066 1312 i
* 198.82.0.0/16 157.130.46.53 300 701 1239 7066 1312
i
* 166.61.8.89 0 145 11537 7066 1312
i
*> 216.177.55.5 500 15076 1239 7066
1312 i
* 160.81.38.225 9 0 1239 7066 1312 i
If you mean AS 13546 VT-RICHMOND-AS, only one in BGP from
AS 16517 : 208.16.73.0/24
In MBGP, we only see two of these routes.
Two others are aggregated into Sprint address blocks :
63.164.28.0
208.16.73.0
while 192.70.187.0 does not appear at all and is not MBGP routable from us.
Regards
Marshall
>
> Also, there's no real reason to think that address space usage in that
> bootstrap /24 will accurately reflect usage in a /20 allocated to them,
> since THAT /20 will probably be sub-allocated to users/customers. Heck,
> in our AS, the nameservers and mailservers and the like would probably
> fit into a /27 (maybe a /26), and wouldn't tell you anything about
> the /20 that covers Torgeson Hall....
> --
> Valdis Kletnieks
> Computer Systems Senior Engineer
> Virginia Tech
>
>
>
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