Euro6IX project and Italian IPv6 Task Force

Transcript

Pisa, 11/05/05
6NET workshop
Mario Morelli
Background information
Telecom Italia Lab is the research department of Telecom Italia Group
•
Working on IPv6 since 1995 and actively contributing to its development
and standardization (RFC 3053 on Tunnel Broker mechanism)
•
NGNET.IT initiative: first experimental ISPv6 in Italy and one of the first in
Europe providing services to residential and business users
•
Some more recent initiatives related to IPv6:
USO INTERNO – Tutti i dirirtti riservati
•
– IST Euro6IX project (www.euro6ix.org)
– Italian IPv6 Task Force (www.it.ipv6tf.com)
6NET workshop
Mario Morelli
Pisa,11/05/05
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Euro6IX project: overview
• IST funded project started in 2002 involving seven European
operators research departments (TILAB for Telecom Italia Group)
and European Universities.
• Network features:
– 7 Nodes, each one is an Internet Exchange
– Native IPv6 links up to 34 Mbps
– Multivendor network (basically Cisco, Juniper, Hitachi, 6WIND)
• Basic goal was to design and to build an IPv6-only infrastructure to
test IPv6 network and application services
6NET workshop
Mario Morelli
Pisa,11/05/05
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Map of the Euro6IX network
•Main peerings with:
•6NET
•6Bone
•Moonv6 (North America)
Viby
London
Southampton
Caen
Berlin
Paris
Issy
Bretigny Bern
Base
l
Lannion
Zurich
Aveiro
Lisbon
Alcobendas
Torino
Madrid
Murcia
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Pisa,11/05/05
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Main Euro6IX Goals
Create a network totally based on IPv6 (no tunnel between the nodes)
in order:
– To investigate and to test basic IPv6 features (routing, transition
mechanism, multivendor router interoperability)
– To analyze new models for the Internet Exchanges both from a
technical and business model points of view
– To involve real users in the experimentation activity
– To increase IPv6 awareness across Europe
– To investigate and to test advanced IPv6 services (AAA, DNS, QoS,
Mobility, Multihoming, Multicast, Security)
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Pisa,11/05/05
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• Traditional model of an Internet Exchange is basically:
– a layer 2 infrastructure fully redundant and with high
performances
– ISPs come to in order to exchange their traffic
following some routing policies
– No end-user services are usually provided
– No IP addresses are provided
– No layer three services are usually provided
• All IXes currently deployed are based on this model
Internet Exchange Model (1)
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Pisa,11/05/05
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• IPv6 prefixes are Provider Dependent
– If end user changes Provider, then its addressing space has
to be changed
– Renumbering procedure are being currently studied in IETF
• We analysed the possibilty to define a new model of an Internet
Exchange quite different from the traditional model based on
the concept that an IX is an aggregation point and it could be
the right site to put the servers
• RFC 2374 proposes an addressing scheme based on some
network points, namely Internet Exchange, where renumbering
is not required and IX allocates addresses to its customers
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Mario Morelli
Pisa,11/05/05
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•
This model is based on the following considerations:
– IX could be considered an aggregation point not only for the ISP but
also for the customers (e.g. enterprises networks)
– If we put the services inside the IX all the entities coming to the IX (e.g.
ISP and Users) are able to take benefit of this aggregation (e.g.
improving the performances when accessing the services)
– Internet Exchange can provide addresses to its Customers, making
easier some operations like renumbering of the networks and
multihoming
•
Inside Euro6IX network following models have been studied and deployed
– Model A: traditional IX (only studied)
– Model B:L2 + NAP
– Model C: New IX model
6NET workshop
Mario Morelli
Pisa,11/05/05
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Functional Network Architecture of IX
Layer 2 Infrastructure
WWW
• need for high reliability
• need for high
performance
•
•
•
•
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Layer 3 Infrastructure
– Interconnection with other
IXs
Application services
– As an Internet Data Center
Monitoring application
Transition facilities
– In order to permit IPv4
users to access to IPv6
Euro6IX network
Traditional and next generation
customers
DNS
Monitoring
IPv6-capable
Route Server
Transition
Facilities
TB
GW GW
Services
R
6to4
Relay
R
Switched
Infrastructure
R
R
R
R
R
To other
IX Nodes
Hosted
Routers
To Customer
IPv6 nodes
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6NET workshop
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Pisa,11/05/05
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Specification of the internal architecture of each IX node
Layer 2 Infrastructure: The core of IX is basically a layer 2, high
performance switched, fully redundant infrastructure, connecting the various
blocks inside the IX. The proposal is that each Euro6IX IX node should consist
of at least two Ethernet switches supporting local LAN segments. The IX
Backbone Router will have local connectivity using two high-speed interfaces
(Fast-Ethernet/Gigabit-Ethernet).
Internet Exchange: Layered infrastructure characterized by the
following main logical blocks
– Layer 2 Infrastructure
– Layer 3 Infrastructure (including Router Equipment and Route
Servers)
– Transition Facilities Infrastructure
– Server Farm Monitoring
– Application Services block
6NET workshop
Mario Morelli
Pisa,11/05/05
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Model B: L2 + NAP
Other IPv6
Networks
“Neutral” L2 IX
Telco’s IPv6 NAP
(L3 Services
Owned by the Telco)
Euro6IX node
L2 standard IX
R
R
R
L3 Services
National TELCOs
Standar Peering
IX L2 service
IPv6 Carrier
Backbone
Op2
National Partners Residential/SOHO Users
(Big Customers)
Content Providers
Op1
R
Backbone
IPv6
Euro6IX
6NET workshop
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Pisa,11/05/05
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Model C: IX Assigning addresses
Long-haul
ISPs
LH ISP1
R
Hosted long-haul
ISP routers
LH ISP2
LH ISP3
R
R
IX Infrastructure
and services
Regional
ISPs
Hosting building
L3MF router
R
R
R
Standard IX customers
Next Generation
IX customers
ISP
Customers
Hosted regional
ISP routers
R
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Pisa,11/05/05
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Model C at a glance
LHP B
LHP A
LHP C
LH Provider
Network
Rc
Rb
L3MF
IXv6
Long
LongHaul
Haul
Provider
Router
Provider Router
NG Customer prefix
Is always the same even if
LHP is changed
/48
Ra
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Pisa,11/05/05
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IX
IX
Euro6IX
Backbone
Autonomous
System
Other IXs
IX
IGP
R
IS-IS
OSPFv6
RIPng
iBGP4+
eBGP4+
Euro6IX
IPv6 Exchange
eBGP4+
R
Standard IX
customer
R
eBGP4+
Routing
Euro6IX
Sites
Next Generation
IX customer
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• IX customers are not only big ISPs but also, for example, big
enterprises
– They come to the IX to:
• Exchange IP traffic (like in the traditional IX)
• To get IPv6 prefixes from the IX owner ! address delegation
mechanism provided by an IX
– Address delegation mechanism can make simple (even if
not totally solve) Long Haul Provider Selection and
Multihoming mechanisms
– Renumbering is not required except for those customers
changing IX
• Address delegation mechanism can be deployed by a functionality
called Layer 3 Mediation Function
First output: IX providing addresses (1)
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Pisa,11/05/05
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Next generation IX services
• assignment of provider independent IPv6 addresses to the
IX customers (i.e. regional ISPs or companies)
provision of a L3 “mediation function”
• the customer uses the addresses assigned by the IX and
establishes a BGP4+ peering with the IX
• the customer buys the long-haul service from one (or more)
of the long-haul providers connected to the IX
• the IX forwards the traffic generated by the customer only
to the long-haul ISPs it subscribed with
• the return path is unpredictable
• proven advantages are
– the possibility to change long-haul ISP without
changing addresses easier support for multihoming
First output: IX providing addresses (2)
6NET workshop
Mario Morelli
Pisa,11/05/05
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Second output: IX providing services
– Services can be placed inside the IX location to be provided to
the IX customers
• Network services: AAA, Multicast, Route Server, DNS, PBMN
• Application services: Multicast servers, Management server
• Security Services
• Euro6IX project also identified a different possible role of Internet
Exchanges
– IX is considered an aggregation point for the users and the
services
6NET workshop
Mario Morelli
Pisa,11/05/05
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Conclusions on IX Models
• A lot of work has been carried out in this direction
• Innovative model but:
– It is very important try to identify some realistic business model
to avoid clashes between traditional IX and new model (above
all because all currently deployed IXs use a totally different
architectural and business model)
• Work in progress on this issue in the last part of the project
– It does not solve all the problems even if it is really service
oriented
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Mario Morelli
Pisa,11/05/05
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LH
LH
ISP1
ISP2
IX
LH
ISPm
Enhanced Route
RPSLng Other IX
Server (ERS)
Databas Services
e
Regional
Providers
Route
Server
IX
Mediator
Proxy
Router
(PR)
ISP 1
ISP n
A1
A2
A3
Class A Customers
Traditiona
l
Customer
C1
C2
Class C Customers
6NET workshop
RPSLng
DB
Traditiona
l
Customer
B1
B2
B3
Class B Customers
Long Haul
Providers
IX Model to Study IX Allocated Addresses Schemes
Mario Morelli
Pisa,11/05/05
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Main activities carried out inside Euro6IX
(1)
•
For a complete list, see our web site at: http://www.euro6ix.org/repository
• Implementation of the IX Model
• Policy Based Management Network Tool
– Tool to centrally manage and monitor the policy inside the IX in
a centralized way (for VPN, multihoming, QoS, Security)
• Route Server
– Quagga Route Server implementation for IPv4/IPv6
– Integrated in quagga since version 0.97
– RPSLng database implementations tested (IRRd 2.2 (http://www.irrd.net)
database
– RtConfig patch to support quagga and Route Server based IX configurations
– Both of models previously described have been implemented
successfully in an experimental environments and some IX is going to
implement in their commercial networks
6NET workshop
Mario Morelli
Pisa,11/05/05
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•
Other services/applications developed
– Monitoring Tool (Magalia) and IDS system (Topaz)
– ISABEL application for e-learning (IPv6)
– P2P software migration to IPv6
– SIP Audio Client for IPv6 with QoS interaction with the network (with
the usage of Premium service where possible)
– QoS Measaurements with BE traffic and Premium traffic (DSCP traffic)
– Integration of IPv6 Mobility with AAA (using RADIUS and
OpenDiameter)
•
Standardization activity
– 20+ drafts have been written with Euro6IX contribution on various
topics
– Full list at: http://www.euro6ix.org/documents/e_standardization.php
Main activities carried out in Euro6IX (2)
6NET workshop
Mario Morelli
Pisa,11/05/05
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SSM activity
• Last year Euro6IX consortium decided to implement
SSM in the network
• SSM tests are being currently doing at a global level
• Main problem we are facing is the lack of applications
supporting SSM.
• PIM-SSM has been enabled inside some of the IXes
(some local tests have been already successfully done)
6NET workshop
Mario Morelli
Pisa,11/05/05
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•
Kicked off in October 2003 in Milan within the scope of IPv6 European Task
Force with the goal:
– To spread out as much as possible information on IPv6 related issues
(through web site, documents and conferences)
– To monitor the level of IPv6 awareness in Italy
– To maintain a link with the other European National Task Forces
already developed
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Public Mailing List
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Web site: www.it.ipv6tf.org (also IPv6-aware)
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Periodic meetings (two per years, the next one is coming in the early
summer)
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At the moment almost 30 partners involved (ISPs, Telcos, Mobile
Operators, Internet Exchanges, Universities, Manufactures, Research
Centers)
– Willing to increase this number to raise the awareness of IPv6 in our
country (and not only to technical level)
Italian IPv6 Task Force (1)
6NET workshop
Mario Morelli
Pisa,11/05/05
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•
5 Working Groups
– Working on different topics: Public Administration, Private Industries,
Mobility and Wireless, Dissemination activities, Business Models and
Services
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Main result up to now is the Recommendation that is ready and will be
delivered soon
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Main activities for this year:
– Realization of a web site with dissemination goals (coming soon)
– Participation to public events for dissemination (the next one probably
in September)
– To prepare some technical documents related to IPv6 topics (like
transition mechanism and security)
– To monitor issues and initiatives in Italy interesting for IPv6 in different
fields (mobility, home networking, DTT,..)
Italian IPv6 Task Force (2)
6NET workshop
Mario Morelli
Pisa,11/05/05
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THANKS!
For further information:
[email protected]
6NET workshop
Mario Morelli
Pisa,11/05/05
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Euro6IX project and Italian IPv6 Task Force

Transcript

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