32-bit ASN for DNS Services

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Presented by Anand Buddhdev in Closing Plenary at RIPE 60, Prague

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32-bit ASN for DNS Services

  1. 1. RIPE Network Coordination Centre 32-bit ASN for DNS Services Anand Buddhdev DNS Services Manager, RIPE NCC Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 1
  2. 2. RIPE Network Coordination Centre Background • RIPE NCC managed zones - Forward zones (ripe.net, etc) - Reverse zones (IPv4 and IPv6) - ENUM (e164.arpa) - Secondary for ip6.arpa and many other zones • Two servers - ns-pri.ripe.net - ns-sec.ripe.net • Single servers • Unicast Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 2
  3. 3. RIPE Network Coordination Centre Upcoming Changes • Multi-server architecture • Anycast - 193.0.9.0/24 - 2001:67c:e0::/48 • Serve in-addr.arpa • Independent ASN Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 3
  4. 4. RIPE Network Coordination Centre ASN 197000 Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 4
  5. 5. RIPE Network Coordination Centre Interoperability • Older BGP speakers talk to AS 23456 • Transitive attribute AS4_PATH contains the 32-bit ASN • 32-bit ASN speakers reconstruct the correct path • All major vendors have 32-bit ASN support Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 5
  6. 6. RIPE Network Coordination Centre Connection Details • Connection at Amsterdam Internet Exchange • 6 transit providers - All support 32-bit ASNs • Peering with AMS-IX route servers - Recent OpenBGPD - Also supports 32-bit ASNs - 111 of 333 peers have 32-bit ASN support Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 6
  7. 7. RIPE Network Coordination Centre View from Route Servers SAIX Route Server (older Cisco IOS) BGP
routing
table
entry
for
193.0.9.0/24,
version
62729846 Paths:
(4
available,
best
#4,
table
Default-IP-Routing-Table) 

Not
advertised
to
any
peer 

3491 6939 23456 



196.25.9.45
from
196.43.9.254
(196.43.9.254)


 

Origin
IGP,
metric
2,
localpref
100,
valid,
internal 

Community:
5713:777 

Originator:
196.43.9.245,
Cluster
list:
196.43.9.254 Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 7
  8. 8. RIPE Network Coordination Centre View from Route Servers Opentransit Route Server (JunOS 9.3S7.2) 193.0.9.0/24










*[BGP/170]
2w6d
10:26:46,
MED
100,
localpref
85,
from
 193.251.245.11 AS path: 1273 197000 I Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 8
  9. 9. RIPE Network Coordination Centre Success Criteria • Prefix visibility in NetSense • Visibility in DNSMON - Will DNS clients be able to reach us? Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 9
  10. 10. RIPE Network Coordination Centre 100% Visibility in NetSense Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 10
  11. 11. RIPE Network Coordination Centre 100% Visibility in DNSMON (IPv4) Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 11
  12. 12. RIPE Network Coordination Centre 100% Visibility in DNSMON (IPv6) Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 12
  13. 13. RIPE Network Coordination Centre “It Just Works!” Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 13
  14. 14. RIPE Network Coordination Centre Anand Buddhdev RIPE 60, May 2010 http://www.ripe.net 14

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