CGv6 Overview and Benefits
To implement the CGv6, you should understand the following concepts.
Internet Protocol version 4 (IPv4) has reached exhaustion at the international level (IANA). But service providers must maintain and continue to accelerate growth. Billions of new devices such as mobile phones, portable multimedia devices, sensors, and controllers are demanding Internet connectivity at an increasing rate. The Cisco Carrier Grade IPv6 Solution (CGv6) is designed to help address these challenges. With Cisco CGv6, you can:
Preserve investments in IPv4 infrastructure, assets, and delivery models.
Prepare for the smooth, incremental transition to IPv6 services that are interoperable with IPv4.
Prosper through accelerated subscriber, device, and service growth that are enabled by the efficiencies that IPv6 can deliver.
Cisco CGv6 extends the already wide array of IPv6 platforms, solutions, and services. Cisco CGv6 helps you build a bridge to the future of the Internet with IPv6.
Cisco ASR 9000 Series Aggregation Services Router is part of the Cisco CGv6 solution portfolio and therefore different CGv6 solutions or applications are implemented on this platform (specifically on ISM service card). Carrier Grade Network Address Translation (CGN) is a large scale NAT that is capable of providing private IPv4 to public IPv4 address translation in the order of millions of translations to support a large number of subscribers, and at least 10 Gbps full-duplex bandwidth throughput.
Benefits of CGv6
CGv6 offers these benefits.
Enables service providers to execute orderly transitions to IPv6 through mixed IPv4 and IPv6 networks.
Provides address family translation but not limited to just translation within one address family.
Delivers a comprehensive solution suite for IP address management and IPv6 transition.
IPv4 Address Shortage
A fixed-size resource such as the 32-bit public IPv4 address space will run out in a few years. Therefore, the IPv4 address shortage presents a significant and major challenge to all service providers who depend on large blocks of public or private IPv4 addresses for provisioning and managing their customers.
Service providers cannot easily allocate sufficient public IPv4 address space to support new customers that need to access the public IPv4 Internet.