[arin-ppml] IPv6 /32 minimum for extra-small ISP

Marshall Eubanks tme at multicasttech.com
Wed Apr 14 16:26:28 EDT 2010

On Apr 14, 2010, at 4:08 PM, Milton L Mueller wrote:

>> -----Original Message-----
>> From: Bill Woodcock [mailto:woody at pch.net]
>> The router doesn't care how important you think a route is, or how  
>> much
>> you like it, or how many IP addresses or users sit behind it. It's
>> still a route, and the amount of memory it consumes is still just
>> dependent upon its associated path and options.
> "everyone else's router."
> So when a small ISP in Madagascar advertises a new route, resources  
> are consumed here at my router here at Syracuse University? Please  
> confirm this?

Yes, if you are running BGP, unless their routes are aggregated.

Now, I don't see any routes from  Madagascar just now,
but I do see some from (to pick somewhere at random far from the East  
Coast) Cambodia, including this AS :

ASN  24441         CITYLINK-AS-KH                  [MG213- 
AP]           {Cambodia, KH}                CityLink, Routing AS -  
Service Provider, Phnom Penh, KH

24441 has, and

show ip bgp
BGP routing table entry for, version 99023878
Paths: (1 available, best #1, table Default-IP-Routing-Table)
   Not advertised to any peer
   174 3491 18403 24441 24441 24441 from (
       Origin IGP, metric 3992, localpref 100, valid, external, best
       Community: 11424264 11425277

So, yes, they are in my table, consuming some small amount of flash  
memory. If you're running BGP, you should see them too.

It all adds up.


> --MM
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