Technical Models of NAPs

PTTMetro Project

Milton Kaoru KashiwakuraPTTMetro Technical Coordinator

NAPLA 2005 – Lima / Peru

PTTMetro Project

● PTTMetro is a Brazilian Internet Steering Committee project (CGI.br).

● Provide NAP facility in metropolitan regions with ISPs interested in Internet traffic exchange

● Mains advantages :– Cost Reduction– Performance improvement– Gain more control over their routing

PTTMetro Project● PTTMetro implementation characteristics :

– Neutral– Quality– Reduced cost alternative with high availability for ISP– One traffic exchange matrix per metropolitan region

● Locations:– São Paulo – Brasília– Rio de Janeiro– Others 9 places to be defined

PTTMetro - São Paulo● Connect all NAP together in the

unique infrastructure using dark fiber

● Layer 2 switched Ethernet architecture

● VLAN (IPv4, IPv6, Multicast, ...)● Private AS (AS64512 to AS65535)

for routers servers and looking glass● INOC-DBA – Inter-Network

Operations Center Dial-By-ASN (http://www.pch.net/inoc-dba/

PTTMetro São Paulo

PTTMetro São Paulo

Vlan Management(Tag 99) Vlan IPv4 (Tag 10)Vlan Public (Tag 40) Vlan IPv6 (Tag 20)

PIX-USP

PIX-MetroredPIX- Others PIX-Central

PIX-Optiglobe

Route Server 2

Route Server 1

Looking Glass Site/Management

Others services

● Root-Server F Mirror using IPv4 hierarchical anycast technique

● AS112 Project (http://www.as112.net)

Joining requirements● ASN (Autonomous System Number) ● BGP-4 (Border Gateway Protocol Version 4) ● Needs to sign a connection agreement (“Termo de Conexão

ao PTTMetro”).● Needs to make bilateral or multilateral peering agreements

with ISPs connected to the PTTMetro.● Connection in one PIX per location.● Broadcast traffic limited to ARP resolution● Default route to an ISP only if authorized by it.● If announce IP prefixes related to other AS connected to

PTTMetro it needs to be marked with NEXT_HOP_SELF

Fee Model

Cross- connect

PTTMetro

SDH, PDH, FR, etc.

DGO

Switch L2

1 2 3 4

Redundancyphysical and 'genetic' redundancy by using switches from two or more vendors

PIX-USP

PIX-MetroredPIX- Others

PIX-Central

PIX-Optiglobe

Duplex System

Obrigado !Thank You !Muchas Gracias!

Site :http://ptt.br