On 7/9/12 00:09 , Aftab Siddiqui wrote:
As per IPv6 prefixes announced by AS9583 via bgp.he.net - http://bgp.he.net/AS9583#_prefixes6 we can see multiple /64s.
you likely won't see them in your table though.
The question is why their upstreams are accepting /64? It shouldn't be at all otherwise just imagine how many /64s you have to deal with once IPv6 is in full swing.
that vantage point of the collector is germain here since if there are more specifics either filtered or no export those routes might appear from the vantage point of an upstream (where the collector is used) but not elsewhere: so consider the cidr report 9583 SIFY-AS-IN Sify Limited Adjacency: 7 Upstream: 5 Downstream: 2 Upstream Adjacent AS list AS6939 HURRICANE - Hurricane Electric, Inc. AS10026 PACNET Pacnet Global Ltd AS6453 GLOBEINTERNET TATA Communications AS1273 CW Cable and Wireless Worldwide plc AS3257 TINET-BACKBONE Tinet SpA Downstream Adjacent AS list AS45184 DEN-ISP-AS-IN-AP Den Digital Entertainment Pvt. Ltd. AS ISP india AS17825 MAHINDRABT-AS-AP Tech Mahindra Ltd. Software Development Organisation India Announced IPv6 Prefixes Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 1337 AS9583 ORG+TRN Originate: 4294967296 /32.00 Transit: 131073 /47.00 SIFY-AS-IN Sify Limited Aggregation Suggestions This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities. Rank AS AS Name Current Wthdw Aggte Annce Redctn % 1448 AS9583 SIFY-AS-IN Sify Limited 1 0 0 1 0 0.00% Prefix AS Path Aggregation Suggestion 2001:e48::/32 5539 1273 9583 and ask yourself are they really leaking /64s into the DFZ which are being accepted (they aren't) or do they have and adjacency with he.net [jjaeggli@net-oob1.ca2 ~]$ telnet route-views6.routeviews.org Trying 128.223.51.112... Connected to route-views6.routeviews.org (128.223.51.112). Escape character is '^]'. route-views6.routeviews.org> show ipv6 bgp 2001:0e48:0000:0001::/64 % Network not in table route-views6.routeviews.org> route-views6.routeviews.org> show ipv6 bgp 2001:0e48::/32 longer-prefixes BGP table version is 0, local router ID is 128.223.51.112 Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, r RIB-failure, S Stale, R Removed Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path * 2001:e48::/32 2001:4810::1 0 33437 29748 6939 7473 9583 i * 2600:803::15 0 701 3549 9583 i * 2001:4830::5 361 0 30071 3549 9583 i * 2001:4830::e 0 0 30071 6453 9583 i * 2001:428::205:171:203:140 8000029 0 209 10026 9583 i * 2001:428::205:171:203:141 8000919 0 209 174 9583 i * 2001:428::205:171:203:138 8000051 0 209 3257 9583 i * 2607:4200:10::3 0 19214 12989 6939 10026 9583 i * 2607:4200:10::2 0 19214 12989 6939 10026 9583 i * 2001:200:901::5 0 7660 4635 10026 9583 i * 2001:418:0:1000::f002 1 0 2914 3257 9583 i * 2001:418:0:1000::f000 0 0 2914 174 9583 i * 2001:1890:111d::1 0 7018 174 9583 i * 2001:1620:1::203 1 0 13030 3257 9583 i * 2001:470:0:1a::1 0 6939 10026 9583 i *> 2001:668:0:4::2 10 0 3257 9583 i * 2001:240:100:ff::2497:2 0 2497 10026 9583 i * 2610:38:1::1 0 7781 6939 7473 9583 i Total number of prefixes 1
Regards,
Aftab A. Siddiqui