IPv6 deployment status & Migration Strategy
Sify Technologies Ltd
Mohamed Asraf Ali Head – Network Engineering
TEC IPv6 Workshop
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 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
IP is our
DNA
Sify - Who are we ?
Profile vs. Topic
IP address Depletion ?
What is the impact
One of the 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 =>
• How do we grow the network if there are no IPv4 addresses ?
• How do we spread fixed wireless access reach ?
Most services operational on fixed wireless broadband access => many links [management, services are all on IP]
Enterprise Business Services – DIA, MPLS VPNs, DCN services => 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
• How do we spread fixed wireless access reach ?
Every BSTN [full-load] requires – 240 addresses – Mgmt/WAN ONLY • How do we add more business customer and more services ?
• How do we add more consumers and manage higher concurrency ? Growing umber of IP end-points within a home – More IPs !!!
• 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 itWith 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.
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,
IPv6 deployments in Sify
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.
Sify’s IPv4 address space
Sify Supernet Number of IP's Year of assignment
202.177.144.0/20 2^12 4096 Over a decade 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 124.30.0.0/16 2^16 65536 119.226.0.0/15 2^17 131072
Sify’s IPv6 address space
Sify Supernet Number of IP's Year of assignment 2001:E48::/32 2^96 7.92282E+28 Over 3 years
0.016% 3 4 0 T ri ll io n T ri ll io n T ri ll io n IP v 6 A d d re s s e s 7 2 9 9 8 T ri ll io n T ri ll io n IP v 6 A d d re s s e s 0.00000002%
IP Addresses
221.134.0.0/15 2^17 131072 202.144.0.0/17 2^15 32768 118.94.0.0/15 2^17 131072 124.7.0.0/16 2^16 65536 700416Sify-IPv4 IPv4-overall % of share
700416 4294967296 0.016307831
0.7 Million IP Addresses
Sify-IPv6 IPv6-overall % of share 7.92282E+28 3.40282E+38 2.32831E-8
79228 Trillion Trillion IP Addresses
IPv4 4 .2 b il li o n I P v 4 A d d re s s e s IPv4 0 .7 m il li o n I P v 4 A d d re s s e s IPv6 3 4 0 T ri ll io n T ri ll io n T ri ll io n IP v 6 A d d re s s e s IPv6 7 2 9 9 8 T ri ll io n T ri ll io n IP v 6 A d d re s s e s
A Plenty !
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.
Application TCP UDP
Application
[IPv6 Enabled]
TCP UDP
Dual Stack Approach
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]
IPv4 IPv6 Data-link (Ethernet)
IPv4 IPv6 Data-link (Ethernet)
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. 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
How to get there…
Today’s scenario in SP networks,
Core - It is either Native IPv4 or MPLS with
associated services.
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 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
Enterprise sites with IPv4 & IPv6 IPv6 Internet Dual-stack web application servers Dual-stack firewall Dual-stack services of http://sify.com MPLS Core with dual-stack edge Site-A Enterprise sites with IPv4 & IPv6
applications
with IPv4 & IPv6 applications
IPv6 packet transport
Dual-stack Routing edge
IPv6 MPLS Provider Edge with dual-stack MPLS P routers IPv4 only; IPv6 unaware IPv6 Internet access via dual-stack peering
Enterprise networks
IPv6 VPNs
Site-B
Enterprise sites with IPv4 & IPv6
IPv6 MPLS Provider Edge with dual-stack MPLS P routers IPv4 only; IPv6 unaware
IPv6 VPNs facilitates IPv6 transport between sites
MPLS Core with dual-stack edge
Site-A Enterprise sites with IPv4 & IPv6
applications
with IPv4 & IPv6 applications
IPv6 & IPv4 transport VPN
IPv6 Migration
Using ISATAP
Cybercafe
BRAS
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
IPv4 ISP Network
Cybercafe environment Mobile user on IPSec VPN IPv6 Internet L2TP Tunnels IPSec Tunnels ISATAP Tunnels IPSec Tunnel Gateway ISATAP Gateway
Consumer Network
IPv6 Internet Access
IPv4 Internet IPv6 Internet
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
MPLS Core with dual-stack edge IPv4 consumer access network BRAS ISATAP ISATAP Tunnel IPv4 Internet traffic IPv6 Internet traffic Cybercafe
The Future
As we see it
IPv4 Internet IPv6 Internet Contents Contents Contents MPLS Core with dual-stack edge IPv4 consumer access network BRAS ISATAP ISATAP Tunnel IPv4 Internet traffic IPv6 Internet traffic CybercafeSummary
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.
