031-ipv6 addr case studies renater hungarnet v0 4
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IPv6 Addressing case studies
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Copy RightsThis slide set is the ownership of the 6DEPLOY project via its partners
The Powerpoint version of this material may be reused and modified only with written authorization
Using part of this material must mention 6DEPLOY courtesy
PDF files are available from www.6deploy.org
Looking for a contact ? Mail to : [email protected]
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Droits dauteur Lensemble des prsentations utilises dans le cadre de cet atelier est la proprit de 6DEPLOY,
reprsent par ses diffrents partenaires.
La version Powerpoint des prsentations peut tre rutilise et modifie aprs quune autorisation
Lusage de tout ou partie de ce matriel doit mentionn que sa source est le projet 6DEPLOY
. .
Pour tout contact : Mail [email protected] Ou Bernard.Tu @renater.fr
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Contributions
Main authors
Bernard Tuy, RENATER - France Jnos Mohcsi, NIIF/HUNGARNET - Hungary
Contributors
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Updates
B. Tuy 19/05/2010
J. Mohacsi 12/03/2009
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Outline of Presentation
Overview of RENATERs network
Case study of IPv6 address allocation at RENATER Overview of NIIF/Hungarnets network
Case study of IPv6 address allocation at
NIIF/Hungarnet
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RENATER IPv6 numbering
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RENATER-5: national & international links
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RENATER-5: links speed
Backbone links : 10 Gbps (mostly)
But Corsica : 2,5 Gbps Paris-Lyon: 2 x 10 Gbps
International links: rans or : ps
IP Transit South: 10 Gbps
CBFs with
DFN (Kehl) SFINX (Internet eXchange): 2 x 10 Gbps
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RENATER architecture
ater
bone PoP
RENATER
ReBac
Exchange with other
IPv6 addressing case studies 10Regional Networks
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Renater : IPv6 Native support10 Gbps backbone links
50 Regional Nodes (NR)
Dual stack backbone IPv4 and IPv6
Global IP Service
IPv4 unicast and multicast IPv6 unicast
Goal : achieve for both versions of IP an equal level of
Performance Availability
Management
Su ort
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Addressing
Hierarchical addressing
RENATER Prefix = 2001:0660::/32
Allocated by the RIR (RIPE NCC)
eg ona o es POP-ID =2001:0660:xy::/40
Site-ID : a /48
from RNs refix 40 its connected to
Site-IDs allocated by Renater (LIR)
16 bits are reserved for the site topology
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Addressing
/32 /48 /64
LIR Site snRIR
----------------
POP-ID Site-ID
2001:0660:3000:/40 Paris NRI2001:0660:300x:/48
2001:0660:4400:/40 Lille RI
2001:0660:5400:/40 Marseille RI
()
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Example
RENATER prefix 2001:0660::/32
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Strasbourgs RI 2001:0660:4702::/48
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Regional Networks Addressing
Two possibilities
Uses its own prefix (Commercial ISP) Uses RENATERs address space
2001:0660:2---::/48
Sites are addressed in Renaters prefix 2001:0660:{3-F}---::/48
Interco Networ site Regiona MAN
First /64 from the Site-ID
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Addressing scheme
2001:660:20xx::/482001:660:{3-F}xxx::/482001:660:{3-F}xxx::/48
RENATER Regional
NetworkSites
Campuses
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NIFF/HUNGARNET IPv6 numbering
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IPv6 deployment at NIIF/HungarnetInitial IPv6 deployment:
MPLS based backbone: 6PE with additional dual stack routers +
Second phase (2004): Router upgrade for HW based IPv6 forwarding
Used features Routing: IPv4 (unicast, multicast), IPv6 (unicast only), OSPFv2,
OSPFv3, BGP, MPLS VPNs
Netflow, minimal QoS
IPv6 multicast with additional dual stack routers with tunnels
Software upgrade for IPv6 multicast support
Netflow v9 support
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IPv6 address space based on flexible addressallocation RFC3531
Location IPv6 POP addressing:
Gdll (Szent Istvn University) 2001:0738:58::/44
Technology and Economics)KFKI (Research Institute on Physics 2001:0738:5000::/44
SZEGED (University of Szeged 2001:0738:7000::/44
MISKOLC (University of Miskolc) 2001:0738:6000::/44
PECS (University of Pcs) 2001:0738:7800::/44
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Site addressing
Each site (including site infrastructure) gets /48:
each NIIF managed site the 16 bit SLA is allocated based on theo ow ng conven on: = ress segmen a on w n ePOP
Where for :
Range: 0000 till 00FF: Loopback addresses Range: 0100 till 01FF: Intra-pop point-to-points (if it necessary to
Range: 0200 till 02FF: connections to HUNGARNET member ofinstitution
. .peering)
Range: 0400 till 04FF: POP Local Ethernets
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IPv6 loopback addresses
loopback address will also be used for operational and
management actions on the equipment, and for routingpro oco s e , w c w use ese a resses orterminating the peering-sessions.
.This will avoid unnecessary unused addresses althoughaddress conservation is not reall an issue in IPv6.
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Link IPv6 addresses?Not necessary!
OSPFv3 is working with link-local
IS-IS not necessar
IGP table can be quite small!
Reduces the convergence time
routes are used) not with redistribute
w ne wor s a emen
Drawback:
Traceroute can pick up arbitrary IPv6 address as a reply source - Avoid - configure on each point-to-point links:
i pv6 unnumber ed l oopback0
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Link IPv6 addresses -other options
/127: not a good idea
the all-zeros address is supposed to be the any router anycasta ress a oug s s no w e y mp emen e o ay - seemore RFC 3627
although the top 128 addresses are reserved for anycast stuff
/120: no clashes with to 128 an cast addresses
/112: alignment is on a nice colon boundary
64: based on RFC 3513 Allows to use EUI-64 addressing
advisable for point-multipoint and broadcast link scenarios
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Customers Nets Addressing
Two possibilities
Uses its own prefix (Commercial ISP) Uses NIIF/Hungarnets address space
2001:0738:::/48 (/44 pre-allocated, /48 assigned)
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Questions