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Overview
• Where to Get IPv6 Addresses
• Addressing Plans – ISP Infrastructure
• Addressing Plans – Customer
• Example Address Plan
• Addressing Tools
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Where to get IPv6 addresses If Your ISP in: • Africa
– AfriNIC – http://www.afrinic.net
• Asia and the Pacific – APNIC – http://www.apnic.net
• North America – ARIN – http://www.arin.net
• Latin America and the Caribbean – LACNIC – http://www.lacnic.net
• Europe and Middle East – RIPE NCC – http://www.ripe.net/info/ncc
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Internet Registry Regions
ARIN
LACNIC
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Getting IPv6 address space
• Become a member of your Regional Internet Registry and get your own allocation – Require a plan for a year ahead – General allocation policies are outlined in RFC2050, more specific
details for IPv6 are on the individual RIR website – Receive a /32 (or larger if you will have more than 65k /48
assignments) or
• Take part of upstream ISP’s address space – Get one /48 from your upstream ISP – More than one /48 if you have more than 65k subnets
• There is plenty of IPv6 address space
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Addressing Plans – ISP Infrastructure
• ISPs will receive /32 from APNIC as minimum allocation
• Address block for router loop-back interfaces – Generally number all loopbacks out of one /64 – /128 per loopback
• Address block for infrastructure – /48 allows 65k subnets – /48 per region (for the largest international networks) – /48 for whole backbone (for the majority of networks) – Summarise between sites if it makes sense
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Addressing Plans – ISP Infrastructure
• What about LANs? – /64 per LAN
• What about Point-to-Point links? – Protocol design expectation is that /64 is used – /127 now recommended/standardised
• http://www.rfc-editor.org/rfc/rfc6164.txt • (reserve /64 for the link, but address it as a /127)
– Other options: • /126s are being used (mirrors IPv4 /30) • /112s are being used
– Leaves final 16 bits free for node IDs • Some discussion about /80s, /96s and /120s too
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Addressing Plans – Customer
• Customers get one /48 – Unless they have more than 65k subnets in which case they get a
second /48 (and so on)
• In typical deployments today: – Several ISPs give small customers a /56 and single LAN end-sites a /
64, e.g.: – /64 if end-site will only ever be a LAN (or only one VLAN) – /56 for medium end-sites (e.g. small business) – /48 for large end-sites – (This is another very active discussion area)
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Addressing Plans – Advice
• Customer address assignments should not be reserved or assigned on a per PoP basis – Same principle as for IPv4 – ISP iBGP carries customer nets – Aggregation within the iBGP not required and usually not desirable – Aggregation in eBGP is very necessary
• Backbone infrastructure assignments: – Number out of a single /48
• Operational simplicity and security
– Aggregate to minimise size of the IGP
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Addressing Plans – ISP Infrastructure
• Phase One
• Phase Two – Second /32
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Addressing Plans Planning • Registries will usually allocate the next block to be
contiguous with the first allocation – Minimum allocation is /32 – Very likely that subsequent allocation will make this up to a /31 – So plan accordingly
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Example Address Plan
• IPv6 Allocation Form Registry is – 2406:6400::/32
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Example Address Plan
This example is for reference only. You need to plan according to you network requirement
• Option 1 – For ISP growing on Internet access customer
• Option 2 – For ISP growing on both data centre hosting & Internet access
customer
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Example Address Plan
• Option 1 – For ISP growing on Internet access customer
• Option 2 – For ISP growing on both data centre hosting & Internet access
customer
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Example Address Plan
• Option 1 – For ISP growing on Internet access customer
• Option 2 – For ISP growing on both data centre hosting & Internet access
customer
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Training ISP IPV6 Addressing Plan
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Addressing Tools
• Examples of IP address tools (which support IPv6 too): – NetDot netdot.uoregon.edu – HaCi sourceforge.net/projects/haci – IPAT nethead.de/index.php/ipat – ipv6gen techie.devnull.cz/ipv6/ipv6gen/ – sipcalc www.routemeister.net/projects/sipcalc/ – freeipdb home.globalcrossing.net/~freeipdb/
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Questions
• Please remember to fill out the feedback form – <survey-link>
• Slide handouts will be available after completing the survey
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APNIC Helpdesk Chat
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Thank You! End of Session