IPv6 BGP table size comparisons

Mike Tancsa mike at sentex.net
Sat Dec 25 14:32:26 UTC 2010


On 12/24/2010 12:55 PM, Elliott, Andrew wrote:
> -----Original Message-----
> From: Seth Mattinen [mailto:sethm at rollernet.us] 
> Sent: Thursday, December 23, 2010 8:37 PM
> To: nanog at nanog.org
> Subject: Re: IPv6 BGP table size comparisons
> 
> On 12/21/10 2:18 PM, Frank Bulk wrote:
>> There are 4,035 routes in the global IPv6 routing table.  This is what one
>> provider passed on to me for routes (/48 or larger prefixes), extracted from
>> public route-view servers.
>> 	AT&T AS7018: 2,851 (70.7%)
>> 	Cogent AS174: 2,864 (71.0%)
>> 	GLBX AS3549: 3,706 (91.8%)
>> 	Hurricane Electric AS6939: 3,790 (93.9%)
>> 	Qwest AS209: 3,918 (97.1%)
>> 	TINET (formerly Tiscali) AS3257: 3,825 (94.8%)
>> 	Verizon AS701: 3,938 (97.6%)
> 
> 
> Sprint (AS1239) is sending 3,779 routes.
> 
> XO Communications (AS2828) is sending 3973 prefixes.


I had a quick look at the diff between routes given to me by AS174 and
6453 and other v6 peers and here is what I found based on missing /32s.
 (I excluded /48s for now)

There are some 490 /32s missing from Cogent from my network in Toronto,
Canada.   The majority are paths via just 6939.  Of those that are not
just 6939, I see them via the following AS paths.

  11647 6453 293
  11647 6453 701 668
  11647 6453 30071 13645
  11647 13030 15716
  11647 6453 5511
  11647 6453 6830
  11647 6453 25137
  11647 6453 30071 2549
  11647 6453 30071 10318
  11647 6453 6762 7303
  11647 6453 30071
  11647 6453 6762 8280
  11647 6453 13030
  11647 13030
  11647 6453 701
  11647 6453 6762
  11647 6453 5511 8346
  11647 6453 30071
  11647 6453 13030 8271
  11647 13030 8271
  11647 6453 13030 33845
  11647 6453 701 18061 9555
  11647 6453 6762 7642
  11647 6453 30071 6536
  11647 6453 701 18750
  11647 6453 30071 19151
  11647 6453 701 26773
  11647 6453 30071 10326
  11647 6453 30071 19151 16842
  11647 6453 30071 19151 31877
  11647 6453 30071 19151 22911
  11647 6453 30071 13911
  11647 6453 30071 7786
  11647 6453 30071 13911 14595
  11647 6453 6762 7303 4270
  11647 6453 6762 7303 4270 27770
  11647 6453 6762 7303 4270 5692
  11647 6453 13030 48218
  11647 13030 48218
  11647 6453 13030 20634
  11647 13030 20634
  11647 6453 701 12702 24807
  11647 6453 6830
  11647 6453 5511 8697
  11647 6453 6762 31463
  11647 13030 9191
  11647 6453 13030 25164
  11647 13030 25164
  11647 6453 13030 16242
  11647 13030 16242
  11647 6453 13030 28717
  11647 6453 13030 25563
  11647 13030 25563
  11647 6453 5511 3215
  11647 6453 5511 3215
  11647 6453 5511 3215
  11647 6453 5511 12493
  11647 6453 13030 44573
  11647 6453 13030 35366
  11647 6453 13030 29430
  11647 13030 29430
  11647 6453 13030 21232
  11647 13030 21232
  11647 6453 13030 47617
  11647 13030 47617
  11647 6453 6830 20825
  11647 6453 6762 8953
  11647 6453 13030 15216
  11647 13030 15216
  11647 6453 13030
  11647 13030


e.g.

 2607:f078::/32
  11647 6453 701 18750
  11647 6939 18750

and

2a01:c910::/32
 11647 6453 5511 3215
 11647 6939 5511 3215





More information about the NANOG mailing list