Just got this from Cisco, in case anyone is interested in Ipv6
-----Original Message-----
From: Cisco Systems Inc [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 23, 2001 1:05 PM
Subject: Cisco Beyond Basic IP Newsletter V2.21
IPv6 HELPS FUTURE-PROOF INTERNET INFRASTRUCTURES
Going forward, scaling the Internet to new dimensions will include a
worldwide requirement for a substantial increase in the volume of available
IP addresses. The number of Internet-connected devices is proliferating
rapidly. Mobile phone deployment, for example, is expected to reach more
than 1 billion worldwide by 2005, and the majority of those phones will be
Web-enabled. The construction of the world's 2.5G and 3G wireless networks
alone, at some point, will drive the need for a dramatic increase in the
pool of public IP addresses.
In addition, the emergence of Internet appliances and home networks, along
with the ramp-up of Internet connectivity in populous countries such as
China, Russia, and India, will soon be significant contributors to the surge
in IP address consumption.
To future-proof Service Providers' Internet infrastructures, Cisco has made
IP Version 6 (IPv6), as specified by the Internet Engineering Task Force
(IETF), available at no charge in its latest release of Cisco IOS(r)
software for early adopters. Cisco is the first networking equipment vendor
to implement IPv6 support across a wide array of routing platforms.
TECHNOLOGY BACKGROUND
IPv6 extends the address space in an IP packet from 32 bits to 128 bits.
This accommodates a much greater number of bit combinations, out of which IP
addresses numbering into the trillions can be constructed. Standards for 3G
networks-packet-switched wireless networks of up to 2-Mbps speeds that will
be rolling out over the next several years-for example, mandate the use of
IPv6 protocols. In addition, the expected launch of an IPv6-compliant
release of the Microsoft Windows operating system late this year will serve
as yet another significant driver.
Unlike with IPv4, Dynamic Host Control Protocol (DHCP) client software is
not necessary for dynamically allocating available user IP addresses in an
IPv6 access network. In addition, ongoing IETF IPv6 development work will
enable Service Providers to automatically and remotely configure an IP
address on a customer's router, DSL modem, or cable modem. This capability
slashes the time and expense associated with configuring CPE on a
customer-by-customer basis.
There are several ways IPv6 can be deployed to peacefully co-exist with IPv4
infrastructures. One bullet-proof scenario has been used for years on the
experimental 6Bone, a constantly growing international IPv6 test bed. This
approach is to first deploy IPv6 in edge routers and tunnel IPv6 packets
over IPv4 or Multiprotocol Label Switching (MPLS) backbones. This is a
cost-effective option, in that existing IPv4/MPLS backbone services can be
maintained while updating only part of the network, and existing IPv4
revenues are not put in jeopardy.
CONFIGURATION CONSIDERATIONS
IPv6 is available at no charge in Cisco IOS Release 12.2(1)T for the Cisco
800, 1400, 1600, 1700, 2500, 2600, 3600, 4500, 4700, 7100, 7200, and 7500
series routers, as well as the Cisco AS5300 and AS5400 universal access
servers.
To minimize the Service Provider learning curve, commands for configuring
IPv6 in Cisco software are the same as those for IPv4.
BENEFITS SUMMARY
By configuring Cisco IOS IPv6 services, Service Providers can work with the
Cisco Technical Assistance Center (TAC) and systems engineers to plan ahead
for future scalability and IPv4-IPv6 integration. Service Providers, for
example, might wish to become early IPv6 adopters to:
* Learn about the IPv6 protocol set and train employees
* Plan the IPv6 integration and its co-existence with IPv4
* Develop a deployment scenario
FURTHER INFORMATION
For more information on IPv6 other Cisco software capabilities, visit the
following URLs:
Cisco IPv6 Web Site:
http://www.cisco.com/warp/public/732/Tech/ipv6/
Cisco IOS IPv6 Statement of Direction
http://www.cisco.com/warp/public/732/Tech/ipv6/ipv6_techdoc.shtml
Internet Architecture Board: The Case for IPv6
http://www.6bone.net/misc/case-for-ipv6.html
Cisco IOS Software Road Map
http://www.cisco.com/warp/public/620/roadmap.shtml
Beyond Basic IP Newsletter Archives
http://www.cisco.com/warp/public/779/servpro/promotions/bbip/
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Copyright (c) 2001 Cisco Systems, Inc.
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