Ipv6 at ncar
This presentation is the property of its rightful owner.
Sponsored Links
1 / 17

IPv6 at NCAR PowerPoint PPT Presentation


  • 59 Views
  • Uploaded on
  • Presentation posted in: General

IPv6 at NCAR. 8/28/2002. Overview. What is IPv6? What’s wrong with IPv4? Features of IPv6 IPv6 will soon be available at NCAR How to use IPv6. What is IPv6?. IPv6 is the next generation of the Internet Protocol. It will eventually replace IPv4, the protocol that we use today.

Download Presentation

IPv6 at NCAR

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Ipv6 at ncar

IPv6 at NCAR

8/28/2002


Overview

Overview

  • What is IPv6?

  • What’s wrong with IPv4?

  • Features of IPv6

  • IPv6 will soon be available at NCAR

  • How to use IPv6


What is ipv6

What is IPv6?

  • IPv6 is the next generation of the Internet Protocol.

  • It will eventually replace IPv4, the protocol that we use today.

  • IPv6 design started in 1993

  • A standard was created in 1998.


What s wrong with ipv4

What’s wrong with IPv4?

  • Address exhaustion

  • Routing tables getting too large

  • Security

  • Dynamic addresses are inconvenient

  • Mobile IP not well supported


Ipv4 address exhaustion

IPv4 Address Exhaustion

  • 4 billion addresses, but not really

  • CIDR helps, but not enough

  • NAT helps, but not enough

  • New smart devices will need network addresses


Routing tables too big

Routing Tables Too Big

  • 110,000 routes today, and growing

  • Need more memory

  • Need more CPU

  • Have to handle more routing changes


Dynamic addressing is inconvenient

Dynamic Addressing is Inconvenient

  • NAT is a band-aid

    • breaks some applications

    • debugging nightmare

  • DHCP helps

  • Static addresses are really nice


Mobile ipv4 isn t good

Mobile IPv4 isn’t good

  • Hard to manage

  • Clunky roaming


Features of ipv6

Features of IPv6

  • 128-bit addresses

  • Hierarchical addressing

  • More efficient packet headers

  • Security

  • Auto configuration of end hosts

  • Anycast

  • Mobility

  • IPv6 co-exists with IPv4


128 bit addresses

128-bit addresses

  • Sample IPv4 address:

    127.117.8.203

  • Sample IPv6 address: 3FFE:0000:0000:0001:0200:F8FF:Fe75:50DF

    or 3FFE:0:0:1:200:F8FF:Fe75:50DF

    or 3FFE::1:200:F8FF:Fe75:50DF


Security

Security

  • 56-bit DES is supported by all IPv6 stacks

  • New extended packet headers allow various encryption algorithms


Autoconfiguration

Autoconfiguration

IPv6 stateless autoconfiguration: the router and the host create an IPv6 address and a default route

IPv6 stateful autoconfiguration: uses DHCP like IPv4


Anycast

Anycast

  • IPv4 has unicast, broadcast, multicast

  • IPv6 has no broadcast (uses multicast)

  • But there’s the new anycast

  • Sends a packet to the nearest of a set of hosts

  • Like, “send this packet to the nearest router that has a connection to the Internet”


Mobility

Mobility

  • Mobile IPv4 exists in small deployments

  • IPv6 has extended headers and Anycasting, which make Mobile IP easier

  • Mobile IPv6 allows more efficient routing of packets to mobile nodes


Nets plans for ipv6 at ncar

NETS plans for IPv6 at NCAR

  • FRGP now has native IPv6 to Abilene

  • Establish native IPv6 from NCAR to FRGP

  • Connect NCAR Juniper to a VLAN

  • Experiment with IPv6 DNS

  • Consider the security implications

  • Offer IPv6 on production VLANs

  • Consider an internal IPv6 routing protocol


How to use ipv6

How to use IPv6

  • Ask NETS about enabling IPv6 on your network

  • Get an operating system that supports IPv6

  • Let the router assign your IPv6 addresses

  • Use IPv6-aware applications to communicate with other IPv6 machines


Questions

Questions?


  • Login