RFI I Brie iefin ing Converged Communications 7 August 2020 - PowerPoint PPT Presentation

RFI I Brie iefin ing Converged Communications 7 August 2020

Content – SIT SITA Network Archit itecture ❖ Executive summary ❖ SITA MPLS network current state ➢ Layer-3 ➢ Layer-2 ➢ Current network architecture ❖ RFI Requirements ❖ SITA proposed SDN Architecture ❖ New SITA Layer-2 topology ❖ SITA internet perimeter ❖ End 2 SITA SOC Ltd

Executiv ive Su Summary ry 1 2007/2008 – Whe Where it sta tarte ted? 3 The he futu uture sta tate te of of Netw twork? Cur urrent Sta tate te of of the he Network • 2 The existing SITA Core network (known as • SITA is embarking on a network the SITA NGN) was designed in 2007 and transformation programme to modernise • In 2015 SITA refreshed hardware to Cisco built in 2008 to fulfill requirements set out its Core network to Software Defined ASR9010 router. during that period. Network (SDN). SITA is faced with a • There are still Cisco 7609 routers that have • At the time the following hardware was challenge related to cashflow and it remained on the network. deployed:- cannot invest on upfront capital • Overall Layer-2 topology remained the same. 1. Cisco 7609 routers expenditure (CAPEX) to fund its strategic 2. Cisco 12000 series routers infrastructure modernisation programmes. 3 SITA SOC Ltd

SIT SITA MPLS S curr rrent state La Layer-3 state: La Layer-2 state: ❖ 4 x Super PoPs and 21 Aggregation ❖ 55 Core links PoPs spread across the country. ❖ Single Points of Failure ❖ 54 X Cisco ASR 9010 routers. ❖ 13 X Cisco 7609 routers (End-of-Life) ❖ 2 x Cisco 7200 routers (BGP Route Reflectors) – (End-of-Life) ❖ 49 X Channelized E1s ❖ 5 X Data Centres (Centurion, BETA, Cape Town, George and Pietermaritzburg) 4 SITA SOC Ltd

SIT SITA MPLS S network rk archit itecture 5 SITA SOC Ltd

Curr rrent La Layer-2 2 topolo logy (Sin Single le Poin int of failu ilure) ❖ Cap ape Town PoP oP is is Sin ingle le Poi oint of of Fail ailure for th three Provin inces. EC NC NC 6 SITA SOC Ltd

❖ Not pa Not part of of the he RFI FI, but but Proposed new Layer-2 topolo logy thi his s is to o gi give ve bi bidders s a view of of wh what SIT SITA A is wor orkin ing g on on from om a Layer-2 tr transmis issio ion pe persp spectiv ive. ❖ Introduction of of Na Nation onal an and Regi egion onal l ri rings gs (Me (Metro-Ethernet) ❖ Com Complete el elimination of of Si Singl ngle Poi oints s of of Failu lure. 7 SITA SOC Ltd

SIT SITA In Internet perim rimeter c curr rrent state Cen Centurion on: ❖ Two internet breakout points in Centurion ❖ Internet router is Cisco 6509E with 10gbps line cards and Cape Town. ❖ Government Internet Exchange (GIX) router is Cisco ❖ Upstream links to transit provider are 6509E with 10Gbps line cards 10Gbps. ❖ Provider Edge router is Cisco 6506 – 10Gbps line cards Cap Cape Town wn: ❖ SITA has its own ASN, its own public IP ❖ Internet router is Cisco 7604 with 10Gbps line cards. address space and is in the process of ❖ Government Internet Exchange (GIX) router is Cisco implementing peering with various networks 6509E with 10Gbps line cards ❖ Provider Edge router is Cisco 6506 with 10Gbps line cards KZN: KZ ❖ Pietermaritzburg has Cisco 6509E ❖ Provider Edge router is Cisco 6506. 8 SITA SOC Ltd

SIT SITA In Internet and DMZ archit itecture 9 SITA SOC Ltd

SIT SITA Requir irements ❖ A proposed detailed design that will transform the current SITA MPLS network to a Software Defined Network. The SDN solution should provide resiliency, scalability, and high availability. SITA is currently executing several critical in-flight programmes, detailed below, that are directly dependent on the network being highly available and able to scale: • Cloud and legacy based mainframe and midrange services • E-Government services • SA-Connect and other provincial broadband projects to enable connectivity to services ❖ The response needs to propose options of strategic partnership and funding model/s such as, Consortiums, Joint Ventures, Rent to Own or other types of models that industry has the appetite for in the context of shared risk and return. The underpinning principle of the proposed models is that SITA must have full control of key assets to ensure that the state is not at risk. The partnership and any related funding model/s should incorporate a plan of action for the SP/s to layout capital upfront and look at a joint recoupment model together with a robust onboarding programme of implementation. This must include risk and reward sharing, detailed cost, cashflow, sustainability and other financial views over the period of partnership as well as value to SITA beyond this period. The proposed options of the industry partnership and related funding model/s must cover: • Five (5) year model; and • Ten (10) years model. 10 SITA SOC Ltd

Proposed SD SDN Archit itecture 11 SITA SOC Ltd

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