IPv4 addresses are 32 bits which limits the addresses space to 2^32 addresses. With the growing demand of internet connected devices there is a need of bigger address space. IPv6 provides 128 bit addressing mechanism. As IPv4 address space is exhausting, IPv6 migration becomes imminent. IPv4 to IPv6 migration is not an easy task considering the complexity of the internet. This solution to transition IPv4 to IPv6 is yet to be discovered and the immediate solution is interoperability between existing IPv4 and upcoming IPv6 networks.

1. Xavient Information Systems
Great Ideas … Simple Solutions
Ideas to Solutions
A Xavient Case Study
IPv4 IPv6 Transitioning for a leading Cable/ISP in the US
Company Background
A leading entertainment, information and communications products and services provider in US.
Client Requirements
IPv4 addresses are 32 bits which limits the addresses space to 2^32 addresses. With the growing demand of internet connected devices
there is a need of bigger address space. IPv6 provides 128 bit addressing mechanism. As IPv4 address space is exhausting, IPv6
migration becomes imminent. IPv4 to IPv6 migration is not an easy task considering the complexity of the internet. This solution to
transition IPv4 to IPv6 is yet to be discovered and the immediate solution is interoperability between existing IPv4 and upcoming IPv6
networks. The problems which have been encountered:
 Absence of seamless and transparent connectivity between incompatible and disjoint IPv4 aware applications across external
IPv6 network.
 Legacy applications unable to communicate on newer IPv6 Network.
 Often there are DoS (denial of service) attacks on IPv6 routers, and even legitimate traffic generates excessive load on endpoint
routers.
 Incompatibility with l2tp implementations with various independent software vendors.
 Incompatibility with PPP with some telecom equipment.
Xavient Solution
We aimed to achieve seamless end to end connectivity between customer premise equipment ( router) to ISP routers and achieved
measurable improvement in reduction to Average Ping Latency Time through better implementation of transport algorithms.
The solution was provided while giving consideration to the following scenarios:
 Customer (IPv4 ) to ISP's IPv4 network though a IPv6 intermediate network using IPv4 over IPv6 tunneling.
 Customer (IPv6) to ISP IPv6 network using tunneling over IPv4 intermediate network.
IPv4-IPv6 Transition

2. Ideas to Solutions
A Xavient Case Study
The above diagram depicts how Xavient developed the required solution on both client and server end.
Benefits
 Transparent and seamless communication between newer IPv6 and Legacy applications
 Increased rating on the American Consumer Satisfaction Index
 Increased satisfaction from end users
 Legacy applications need not be rewritten and they continue to function normally without any changes
 No need of investment on newer routers and only firmware was modified
 Reduction in round-trip packet transport latency within tunnel by optimizing code
 Easy web interface based management of device to make configuration changes

 Headquartered in Simi Valley, CA, Xavient Information Systems (XIS) is a leading provider of global IT and engineering services
and solutions. Since its inception in 2002, Xavient has grown to be a tier-one IT Professional Services and Solutions provider for
telecommunication, broadcasting, manufacturing, retail, and healthcare companies.
 It is the preferred transformation partner across product and vendor evaluation; business process re-engineering; outsourcing
and off-shoring; product implementation; custom solution development and IT professional services for several Fortune 1000
companies.
 Xavient leverages its proven expertise in Global Delivery Models with centers of excellence in Application Development, QA &
Testing, Managed IT Infrastructure services and IT Application & Production environment.
About Xavient
Corporate Location
CALIFORNIA
2125, Suite. B, Madera Rd
Simi Valley, CA 93065
Main Line: 1.805.955.4111
Fax Line: 1.805.955.4144
Our Locations
GEORGIA
2 Ravinia Drive
Suite 500
Atlanta, GA 30346
Main Line: 1.678.801.9966
COLORADO
9800, Mount Pyramid Court
Suite 400
Englewood, CO 80112
Main Line: 1.303.900.0700
WASHINGTON
800, Bellevue Way NE
Suite 400
Bellevue, WA 98004
Main Line: 1.425.442.6629
NOIDA
54, NSEZ, Phase II
Noida – 201305, U.P. (India)
Main Line: 91.120.4743000,
91.120.4532000
Fax No: 91.120.4240948
CANADA
2 Robert Speck Parkway
Suite 750, Mississauga ON L4Z 1H8
Phone: 1.905.361.9816