IPv6 in the Telco Cloud

Transcription

1 IPv6 in the Telco Cloud APNIC 44 September 2017 Telstra Unrestricted Copyright Telstra

2 Introduction Sunny Yeung Senior Technology Specialist, Telstra Wireless Network Engineering Technical lead for Wireless IPv6 deployment Wireless Mobile Edge and Telco Cloud IP Architecture 2 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

3 Executive Summary What does a IPv6 Mobile Network look like? Where are we at with deployment? What challenges lies ahead? Where else do we need to consider IPv6? 3 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

4 IPv6 for a Mobile Network Telstra Unrestricted Copyright Telstra 4 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

5 IPv6 for a Mobile Network Why? As IPv4 addresses deplete, it will be more expensive to extend IPv4 resources Dual-Stack is an effective transition technology but does not solve the IPv4 depletion problem Introducing IPv6: Reduced dependency on NAT Remove the need for regionalisation Pushes applications to move to IPv6 5 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

6 IPv6 for a Mobile Network Traffic Flow IPv6 NAT64 Public IPv6 to Public IPv4 IPv4 Public Internet Radio Network (IPv4 transport) EPG Carrier Network (IPv4 + IPv6) IBR IPv6 Public Internet Single Bearer IPv6 only user plane Native IPv6 6 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

7 IPv6 for a Mobile Network Different APNs for different purposes Two existing APNs one for Handsets, one for Mobile Broadband and Tethering 464XLAT Telstra.WAP NAT64/ DNS64 Internet or Telstra.Internet DNS-DS/ NAT44 Internet 464XLAT + NAT64 + DNS64 for the Handset APN only IPv6 enabled DNS for all other APNs 7 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

8 What have we achieved so far? Telstra Unrestricted Copyright Telstra 8 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

9 What have we achieved so far? Most major content providers are providing IPv6 reachability Some providers have mandated IPv6 support in their app stores and all new apps must support native IPv6 Networks are evolving to support new IPv6 connections SS or DS Devices are beginning to support IPv6 natively 9 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

10 What have we achieved so far? 10 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017 Source -

11 So what is there left to do? 11 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

12 Complexity in the network Telstra Unrestricted Copyright Telstra 12 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

13 Complexity in the network Value Added Services or packet processing requires manual steps today FW Video Optimizer Parental Control Mobile Network Internet PGW Border Router Each path may require a unique VPN or PBR to define its path. The more services, the more convoluted this becomes. 13 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

14 Complexity in the network Network Function Virtualization Mobile Network PE BR Internet Provider Virtualisation may reduce the cost of such network functions, but does not necessarily reduce the network complexity Spine Leaf Spine Leaf Each path may require a unique VPN or PBR to define its path. The more services, the more convoluted this becomes. vpgw vfw vvideo Optimizer vparental Control vcgn 14 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

15 Complexity in the network SDN only solves one of many problems Mobile Network PE BR Internet Provider Software-Defined Network means many different things to many people. If Service A then vfw then vcgn then Internet If Service B then vfw then vparental Control then vcgn then Internet If Service C then vvideo Optimizer then vparental Control then vcgn then Internet vpgw vfw Spine Leaf vvideo Optimizer Spine Leaf vparental Control Openflow Switch vcgn Service Function Chaining is the equivalent of PBR for SDN. 1. Identify the user 2. Allocate a service chain to the user according to their subscription 3. Program the network to direct the packets of this user to the appropriate VNFs 15 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

16 Let s dive deeper 16 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

17 Complexity in the network Underlay and Overlay Underlay can be IPv4 only. But why? Mobile Network PE Spine Leaf SR? Internet Provider BR Spine Leaf Can we do Point-to-Point /127 and do away with IPv4 altogether? Is VXLAN over EVPN the best solution for a Telco Cloud? What about service chaining? This should all be contained within a single AS. What routing protocol is run between VTEPs? vpgw vfw vvideo Optimizer vparental Control vcgn If this is entirely IPv6, can we leverage Segment Routing for SDN control? 17 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

18 Complexity in the network Underlay and Overlay Openstack is somewhat ready for IPv6 neutron supports IPv6 subnets and DHCPv6, as well as SLAAC You can begin to onboard tenants that can be IPv6 enabled. Really there is only two options Dual-Stack everything, or Conditional Dual-Stack. IPv4/IPv6 IPv4/IPv6 IPv4/IPv6 IPv4/IPv6 API endpoints Databases Automation Interfaces 18 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

19 Complexity in the network Openstack does not fully support IPv6 Does not support the use of an external IPAM module for IPv6 to allocate the subnet. OVS tunnel types do not support IPv6 endpoints until OVS Single-stack IPv6 tenant networking not fully available. VPN support not good until at least Kilo. NAT on OvS for IPv4. 19 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

20 Fog and Transport Telstra Unrestricted Copyright Telstra 20 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

21 Fog 5G requires super low latency depending on the network slice required and the application behind it. Transit Provider Content Provider Roaming Gateway At some point, we must move the cloud even closer to the user MPLS Core Telco Cloud: 1. Service Functions in VNFs 2. Virtualised Packet Core Nodes 3. Media Cache 4. Value Added Services Aggregation PE Border Router Internet CRAN Telco Cloud 21 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

22 Transport IPv6 SS for transport layer? (6PE) Transit Provider Content Provider SRIPv6 to replace traditional MPLS? Roaming Gateway MPLS Core 6VPE required to ensure services provided by different VPNs have IPv6 support Aggregation PE Internet Border Router CRAN Telco Cloud 22 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

23 What is our goal? Telstra Unrestricted Copyright Telstra 23 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

24 What is our goal? The full removal of IPv4 private and public addressing from the entire network Enable NAT translations for only what is necessary IPv4aaS 24 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

25 There is a long journey yet for IPv6, this is just the start 25 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017

26 Thanks! Telstra Unrestricted Copyright Telstra 26 Telstra Unrestricted IPv6 in the Telco Cloud Sunny Yeung 09/2017