IPv6 deployment status & Migration Strategy

IPv6 deployment status & Migration Strategy Sify Technologies Ltd Mohamed Asraf Ali Head Network Engineering asraf.ali@sifycorp.com TEC IPv6 Workshop Migration from IPv4 to IPv6 in India

Sify - Who are we? Profile vs. Topic One of India s largest private IP/MPLS Service Providers MPLS enabled IP Service Provider 935 nodes => 400+ IP/MPLS POPs Most services operational on fixed wireless broadband access => many links [management, services are all on IP] Enterprise Business Services DIA, MPLS VPNs => many many customer links - IP again Consumer broadband service IP based ETtH, WBB Access IP again Other consumer services Organized chain of cybercafés => many PCs within Cybercafés IP again

Sify - Who are we? Profile vs. Topic IP is our DNA

IP address Depletion? What is the impact One of the India s largest private IP/MPLS Service Providers How do we grow the network if there are no IPv4 addresses? MPLS enabled IP Service Provider 935 nodes => 400+ IP/MPLS POPs How Most do services we spread operational fixed wireless on fixed access wireless reach broadband? access => many Every BSTN links [management, [full-load] requires services 240 are addresses all on IP] Mgmt/WAN ONLY How do we add more business customer and more services? Enterprise Business Services DIA, MPLS VPNs, DCN services => many many customer links - IP again How do we add more consumers and manage higher concurrency? Consumer broadband service IP based ETtH, WBB Access IP again Growing umber of IP end-points within a home More IPs!!! Other consumer services Organized chain of cybercafés => many PCs within Cybercafés IP again How do we add more services within the e-ports and also add more e-ports?

IPv6 in Sify Other business Drivers Business Drivers As we see it With the hosted and collocated contents - IPv6 Network access support at the Data Center. Customers demanding IPv6 transport solutions. Gaining the technical competitiveness with advanced services on IPv6. Strategies in preparing new services, with competitive advantage. Enterprise Customer perspective. With need for keeping up with the technology advancements and being futuristic. Rolling out peer-to-peer applications mandating routable IP address space for every end-point.

IPv6 deployments in Sify Sify is the pioneer in testing and deployment of IPv6 technologies and its associated services in India. Sify has a dual-stack (IPv4 & IPv6) compliant edge with an MPLS enabled NGN core supporting transport of IPv6 packets alongside IPv4. With the dual-stack edge, Sify can offer IPv6 VPN & Internet transit services to its enterprise customers. All the four Internet Data Centers are IPv6 enabled and supports IPv6-aware services. Sify has deployed http://sify.com as the first dual-stack commercial content portal in India.

IPv6 deployments in Sify Sify is the only SP member in the project 6Choice, a India Europe cooperation for promoting IPv6 adoption. Sify is funded for developing case-studies based on its experiments to promote IPv6 migration in the Industry. Some of the projects include, Enabling dual-stack for consumer access network environment. Helps consumers with IPv6 compliant desktops to connect to IPv6 public Internet. Also helps in building networked home solutions with the huge number of IPv6 address space. IPv6 transport support for data center networks. Supports customers hosting IPv6 enabled contents in our Datacenters.

Sify s IPv4 IPv6 address space Sify Supernet Sify Supernet Number of IP's Number of IP's Year of assignment Year of assignment 2001:E48::/32 2^96 7.92282E+28 Over 3 years 202.177.144.0/20 2^12 4096 0.00000002% 202.177.160.0/19 2^13 8192 210.18.0.0/17 2^15 32768 210.210.0.0/17 2^15 32768 210.214.0.0/16 2^16 65536 IP Addresses 124.30.0.0/16 2^16 65536 119.226.0.0/15 2^17 131072 Over a decade 221.134.0.0/15 A 2^17 Plenty 131072! 202.144.0.0/17 2^15 32768 118.94.0.0/15 2^17 131072 124.7.0.0/16 Sify-IPv6 7.92282E+28 2^16 IPv6-overall 65536 3.40282E+38 700416 % of share 2.32831E-8 79228 Trillion Trillion IP Addresses Sify-IPv4 IPv4-overall % of share 4.2 billion IPv4 Addresses 0.016% 0.7 million IPv4 Addresses 340 Trillion Trillion Trillion IPv6 Addresses 72998 Trillion Trillion IPv6 Addresses 700416 4294967296 0.016307831 0.7 Million IP Addresses IPv4 IPv4 IPv6 IPv6

Integration Strategy The Approach IPv4 OFF! & IPv6 ON! Not something to have any day in the foreseeable future. IPv4 & IPv6 will co-exist for sometime in future. IPv4 implementations should support its successor IPv6 in all aspects. Careful planning and education crucial for successful integration and transition. Start with the dual-stack SP edge to enable IPv6 service offerings.

Dual Stack Approach Application Application [IPv6 Enabled] TCP UDP TCP UDP IPv4 IPv6 IPv4 IPv6 Data-link (Ethernet) Data-link (Ethernet) Key factors Both IPv4 and IPv6 stacks should be enabled. Applications can use both. Choice of stack based name lookup and preference. [IE Browser prefers IPv6 stack]

Integration Strategy Some Guidelines Basic steps in integration common for enterprise & SP environments, Addressing scheme for IPv6 Services with IPv6 like Multicast, DNS, QoS etc. Network Security Routing Protocols Network Management and other OAM related aspects. Resources are shared when IPv4 & IPv6 co-exist. Memory and processor requirements - to be evaluated. Look for HW-based forwarding for IPv6 in the near future

How to get there Today s scenario in SP networks, Core - It is either Native IPv4 or MPLS with associated services. Services MPLS L2/L3 VPNs, QoS... Or L2TPv3, QoS, Multicast, Datacenter, Consumer services etc. All this to be IPv6 compliant for an ISP to be successful in integration.

IPv6 : Migration Adapt, integrate & co-exist Deployment options in SP core For Native IPv4 environments, Tunnel IPv6 in IPv4 Enabling Dual-stack IPv4-IPv6 Native IPv6 with dedicated network resources For MPLS environments, IPv6 Provide Edge solutions IPv6 MPLS VPN solutions

SP networks IPv6 Internet Access, data centers Dual-stack services of http://sify.com Dual-stack web application servers Dual-stack firewall Dual-stack Routing edge MPLS Core with dual-stack edge IPv6 Internet Enterprise sites with IPv4 & IPv6 applications Enterprise sites with IPv4 & IPv6 applications Site-A IPv6 MPLS Provider Edge with dual-stack MPLS P routers IPv4 only; IPv6 unaware IPv6 Internet access via dual-stack peering IPv6 packet transport

Sify routes Looking glass view

Enterprise networks IPv6 VPNs IPv6 MPLS Provider Edge with dual-stack MPLS P routers IPv4 only; IPv6 unaware IPv6 VPNs facilitates IPv6 transport between sites Site-B MPLS Core with dual-stack edge Enterprise sites with IPv4 & IPv6 applications Enterprise sites with IPv4 & IPv6 applications Site-A IPv6 & IPv4 transport VPN

IPv6 Migration Using ISATAP Router as ISATAP gateway connecting users to IPv6 Internet. Extends IPv6 access through IPsec tunnels of remote access clients. MS XP/Vista support ISATAP clients Cybercafe environment BRAS ISATAP Gateway IPv4 ISP Network IPv6 Internet Mobile user on IPSec VPN IPSec Tunnel Gateway ISATAP Tunnels IPSec Tunnels L2TP Tunnels

Consumer Network IPv6 Internet Access Cyber café environment enabled dual-stack to support access to IPv4 and IPv6 Internet ISATAP over L2TP helps reach ISATAP gateway for auto-assignment of IPv6 addresses IPv4 Internet IPv6 Internet MPLS Core with dual-stack edge ISATAP Cybercafe environment BRAS IPv4 consumer access network IPv6 Internet traffic IPv4 Internet traffic ISATAP Tunnel

The Future As we see it Contents Contents Contents IPv6 Internet IPv4 Internet MPLS Core with dual-stack edge ISATAP Cybercafe environment BRAS IPv4 consumer access network IPv6 Internet traffic IPv4 Internet traffic ISATAP Tunnel

Summary Adapt, Integrate & Co-exist Adapt IPv6 in your network transport, however small or big it is. Integrate it with the current network transport solutions with various scenarios and applications. Make IPv6 co-exist in the current network environment Half the battle WON.

Thank You