ipv6 at ucar pete siemsen 1/14/2014. what is ipv6? next generation of the internet protocol. design...
TRANSCRIPT
IPv6 at UCAR
Pete Siemsen
1/14/2014
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What is IPv6?
• Next generation of the Internet Protocol.
• Design started in 1993
• First standards: 1998
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What’s wrong with IPv4?
• Address exhaustion
• Routing tables getting large (400k+)
• Improved end-to-end connectivity
(no NAT)
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Features of IPv6
• Ugly 128-bit addresses– Old: 128.117.63.6
– New: 2001:468:503:3f::94eb
• Co-exists with IPv4, called “dual-stack”
• Can auto-configure end hosts (we won’t)
• Minor new things: Anycast, Mobile,
Security
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IPv6 at NCAR today
• Not much demand
• We’ve had limited IPv6 for years
• Test VLANs exist at ML and FL
• Very little traffic
• Works well
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IPv6 Future at NCAR
• NETS leading, with NCAB oversight
• Will convert existing VLANs to dual-stack
• Gradual, division-by-division, when asked to
• Wireless too
• NETS is testing IPv6 DNS/DHCPv6/IPAM servers
• Won’t use auto-configuration
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Impact of IPv6 at NCAR
• We expect little negative user impact
• More network complexity
• More security complexity
• Better reachability to IPv6-capable
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