The document summarizes a training session on IPv6 addressing hosted by Ferenc Csorba of RIPE NCC. RIPE NCC is a not-for-profit organization located in Amsterdam that distributes internet number resources like IP addresses and AS numbers. The training covered IPv6 addressing plans and subnetting. Some key points discussed included the philosophy change from IPv4 to IPv6 where the default subnet size is /64 to allow for more efficient autoconfiguration, and how to determine how many subnets and addresses to allocate to customers based on their needs.

1. March 2014
RIPE NCC | DKNOG4 Copenhagen |
Training Services
IPv6 Addressing
Plans and Subnetting
Ferenc Csorba RIPE NCC

2. Ferenc Csorba - 13 March 2014
RIPE NCC
• Located in Amsterdam
• Not for profit organisation
• One of the 5 Regional Internet
Registries
RIPE NCC - who are we? 2

3. Ferenc Csorba - 13 March 2014
5 RIRs 3

4. Ferenc Csorba - 13 March 2014
We distribute Internet number resources
•IP addresses
• IPv4
• IPv6
•AS numbers
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5. Ferenc Csorba - 13 March 2014
We give training courses
•LIR Training Course
•RIPE Database Training course
•Routing Security Training Course
•IPv6 for LIRs Training Course
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6. Ferenc Csorba - 13 March 2014
Most Difficult part of the IPv6 course? 6

7. Ferenc Csorba - 13 March 2014
Philosophy change 7

8. Ferenc Csorba - 13 March 2014
IPv4 -> IPv6: what philosophy change? 8
How many subnets do I need?
Subnet always = /64
How many IP addresses do I need?

9. Ferenc Csorba - 13 March 2014
What? /64= 2x10^19 addresses? Really?
•Why? Autoconfiguration (SLAAC)
•Feature of IPv6 Architecture
•Conservation?
• first 64 bits
• not last 64 bits
•Enough addresses
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10. Ferenc Csorba - 13 March 2014
Think of your heart!
Don’t count IP addresses in a subnet!
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11. Ferenc Csorba - 13 March 2014
How many subnets do I give my customers?
• /64 (1 subnet)
• /60 (16 subnets)
• /56 (256 subnets)
• /52 (4096 subnet)
• /48 (65536 subnets)
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12. Ferenc Csorba - 13 March 2014
How many customers can I have like this?
•4 billion /64’s
•268 million /60’s
•17 million /56’s
•1 million /52’s
•65536 /48’s
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13. Ferenc Csorba - 13 March 2014
How do customers use these addresses?
•Make an addressing plan
•/64 for all subnets
•Routers: /56 or /52
• give all routers the same size block
• minimum /64 per interface
• allow growth
•Point to point: /64
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14. ?
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More Questions?
Come to our 1 day free
IPv6 training!
Only for RIPE NCC members:
www.ripe.net/training

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