[Denmark-IPv6] ICANN IPv6 factsheet

[Phil Regnauld]

Tak for mødet i går!

Link til IPv6 factsheet som ICANN udgav i slutning af 2007:

http://www.icann.org/en/announcements/factsheet-ipv6-26oct07.pdf

bl.a. den sektion er relevant:

* Cost. It costs network providers time and money to move to an IPv6    
system and to be able to run the existing IPv4 system alongside IPv6    
(something that will be essential for some time into the future).       

* Features. Although IPv6 provides incremental improvements over IPv4,  
its main advantage - greatly increased address space - has yet to       
provide a compelling case for investment. Address depletion simply has  
not been a major focus for many businesses.                             

* Incompatibility. IPv6 is not directly compatible with IPv4. There are 
technologies that enable the two to communicate but IPv4 is liable to   
survive a long time into the future, so bridging technnology will be    
needed for a significant period of time.                                

* Demand. There is currently little or no demand for a move to IPv6     
from paying customers. But all applications need an upgrade, and in     
that regard, application sellers have work to do.                       


Som jeg ken nævnt synes jeg det kunne være interessant at skrive et
blog indlæg eller artikel, hvor man outlinede de problemer man er op
imod for at lave en transition til IPv6, muligvis med diagram der
illustrerer hele kæden, i.e. noget i den stil:

v6 only scenario:
----------------


- - - - - - - - - ---
: Appplication  (1) :
:      |            :
:     (FW) (2)      :
:      |            :        - - - - - - - ISP - - - - - - - -
:     OS (3)        :        :                               :
:      |            : (4)    :    (5)        (6)       (7)   :
:      PC --- (FW) CPE ----- DSLAM/DOCSIS -- EDGE/ -- CORE/  :
:             (2)   :        :     |         Dist   MPLS/VRF :
- -  customer - - - -        :     |         /          |    :
                             :(11)SERVICES -'      (6) BORDER :
                             - - - - - - - - - - - - - -|- - -
                                                        |
                                               (7)  PEER/TRANSIT/
- - - - - - - - - -                                  Internet
:   Service  (10) :                                     |
:      |          :           - - - - - - - - - - - - - | - - - -
:     OS (3)      :           :                   (6)BORDER     :
:      |          :           :                         |       :
:  accelerator (9):           :                    (2) (FW)     :
:      |          :           :   (6)                   |       :
:    SERVER  ------------------  EDGE --------  Content Switch/ :
:                 :           :                 Load Balancer   :
- -  customer - - -           :                         (8)     :
                              --------- Content provider --------

Elements that must be IPv6 enabled/aware:

1: Application: Browser, Mail program, ...
    - Application may not be v6 clean (hardcoded socket sizes, ...)
    - Application may do v4 specific lookups in DNS

2: Firewall: Software firewall such as ZoneAlarm, ...
    - Software may not fully support IPv6

   Firewall: Hardware firewall
    - FW may not support IPv6
    - problems with RA filtering and renumbering

3: Operating System: IPv4 and IPv6 stack, DNS, ... + optional (6to4, ...)
    Most operating systems v6 ready, but:
    - XP/OS X issues with DNS and DHCP support
    
4: Customer Premises Equipment: Router, Modem
    - Device may not support IPv6
    - Device HW maybe not able to handle new firmware with v6
    - Device may be buggy (eating VLAN tags ?)

5: DSL concentrator, Cable plant: depending on technology (L2/L3) may need to
     be v6 aware
    - DHCP v6 forwarding support ?

6: Edge router/switch: Cisco, Juniper, HP, ...
    - Device not strictly required to do v6 in hardware
    - NetFlow accounting
    - ...
    
7: Core routers/switches: Cisco, Juniper, HP + req'd to support v6 in VRF/MPLS
    - Full support for VRF/MPLS
    - req'd to do hardware speed v6

8: Content Switch/Load balancer
    -  may use HW acceleration, firmware upgrade may not be enough

9: Accelerator (Offloader TCP/SSL/...)
    - May not support v6, same as above

11: Network Support Services: DNS, DHCP, RADIUS, NetFlow/accounting:
    - must be v6 aware
    - DHCP not fully implemented yet



.... og så hvis man keder sig kan man lave "v4/v6 scenario", hvor man
skal tilføje en kasse der hedder:

- Carrier Grade NAT / NAT-PT / TCP-protocol-mapping device

... i de rigtige steder, med alt mulige v4-v4-NAT, v4-v6-tunnels, v6-v4-
tunnels, etc... :)

Phil