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CANARIE – CA*net 3
“The Customer Empowered Networking Revolution”
http://www.canarie.ca
http://www.canet3.net
Background Papers on Gigabit toThe Home and Optical InternetArchitecture Design AvailableOptical Internet News list:Send e-mail to [email protected]
[email protected]://www.canarie.ca/~bstarnTel: +1.613.785.0426
The Message In mid 1990s the prevailing wisdom was that commercial sector would drive
design of Internet infrastructure R&E networks would focus on applications or specialized services
As a result in North America R&E networks were commercialized or discontinued e.g NSFnet & CA*net
However new network technologies and most importantly dark fiber is allowing R&E networks to once again redefine telecommunications not only for themselves but also for businesses and most importantly the last mile to the home
R&E networks may become the cornerstone of municipal fiber to the home networks LAN architectures, technologies and most importantly LAN economics are
invading the WAN Control and management of the optics and wavelengths will increasingly be under
the domain of the LAN customer at the edge, as opposed to the traditional carrier in the center
Over time the current hierarchical “connection oriented” telecom environment will look more like the Internet which is made up of autonomous peering networks.
These new concepts in customer empowered networking are starting in the same place as the Internet started – the university and research community.
Customer Empowered Networks Universities in Quebec are building their own 2000km fiber network Universities in Alberta are deploying their own 400 km 4xGbe dark
fiber network School boards and municipalities throughout North America are
deploying their own open access, dark fiber networks Carrier are selling “dim wavelengths” managed by customer to
interconnect dark fiber networks Williams, Level 3, Hermes
Typical cost is one time $20K US per school for a 20 year IRU In Ottawa we are deploying a 60km- 144 strand network
connecting 26 institutions – cost $1m US
Dark Fiber Builds in Quebec
Ottawa Fiber Build
Consortium consists of 16 members from various sectors including businesses, hospitals, schools, universities, research institutes
26 sites Point-to-point topology 144 fibre pairs Route diversity requirement for one member 85 km run $11k - $50K per site Total project cost $CDN 1.25 million Cost per strand less than $.50 per strand per meter 80% aerial Due to overwhelming response to first build – planning for second
build under way
Why Customer Owned Dark Fiber First - low cost
Up to 1000% reduction over current telecom prices. 6-12 month payback Second - LAN invades the WAN – no complex SONET or ATM required in network
Network Restoral & Protection can be done by customer using a variety of techniques such as wireless backup, or relocating servers to a multi-homed site, etc
Third - Enables new applications and services not possible with traditional telecom service providers Relocation of servers and extending LAN to central site Out sourcing LAN and web servers to a 3rd party because no performance impact IP telephony in the wide area (Spokane) HDTV video
Fourth – Allows access to new competitive low cost telecom and IT companies at carrier neutral meet me points Much easier to out source servers, e-commerce etc to a 3rd party at a carrier neutral collocation
facility Customers will start with dark fiber but will eventually extend further outwards with
customer owned wavelengths Extending the Internet model of autonomous peering networks to the telecom world
CA*net 4??
Concept: Industry/Government partnership to build network with scalable growth in
number of wavelengths Many wavelengths using Canadian WDM gear designed for carrying IP
only Network infrastructure to be funded up to 20 years Where possible, use RAN fiber infrastructure to connect between provinces
Three models: International wavelengths and national network: $50 - $150m National network only: $20-50m Minimal network (not coast to coast): $5 - 10m
Connect together existing dark fiber projects in provinces RANs without dark fiber may not be able to participate
Optical BGP - OBGP
Proposed new protocol where RANs ( and eventually universities) control routing of wavelengths across the network
Marriage of CA*net 2 and CA*net 3 concepts
RANs would have direct peering with each other and international peers CANARIE would offer optional aggregation and international peering where
applicable May significantly reduce cost of commodity Internet by allowing direct
peerings with many other networks (commercial and non-commercial)
O-BGP (Optical BGP) Control of optical routing and switches across an optical cloud is by the customer – not the carrier
A radical new approach to the challenge of scaling of large networks Use establishment of BGP neighbors or peers at network configuration stage for process to establish
light path cross connects Edge routers have large number of direct adjacencies to other routers Customers control of portions of OXC which becomes part of their AS Optical cross connects look like BGP speaking peers BGP peering sessions are setup with separate TCP channel outside of optical path or with a Lightpath
Route Arbiter All customer requires from carrier is dark fiber, dim wavelengths, dark spaces and dumb switches Traditional BGP gives no indication of route congestion or QoS, but with DWDM wave lengths
edge router will have a simple QoS path of guaranteed bandwidth Wavelengths will become new instrument for settlement and exchange eventually leading to
futures market in wavelengths May allow smaller ISPs and R&E networks to route around large ISPs that dominate the Internet
by massive direct peerings with like minded networks
Current View of Optical Internets
Big Carrier Optical Cloud using MPLS and IGP for management of wavelengths for provisioning, restoral and protection
Customers buy managed service at the edge
Optical VLAN
Customer
ISP
AS 1
AS 2
AS 3
AS 1AS 4
BGP Peering is done at the
edge
OBGP Optical Internets
Big Carrier Optical Cloud disappears other than provisioning of electrical
power to switches
Customer is now responsible for wavelength
configuration, restoral and protection
BGP
Customer
ISP
BGP Peering is done inside the optical
switch
BGP Routing + OXC = OBGP
Router ARouter C
AS 300190.10.10.0
AS 200180.10.10.0
AS 100170.10.10.0
3.3.3.1
3.3.3.2
1.1.1.1
1.1.1.2
BGP N
eighbor
BGP Neighbor
4.4.4.12.2.2.1
2.2.2.24.4.4.2
Router B
Metric 200Metric 200
Metric 100Metric 100
Figure 2.0
Virtual BGP Router
Router A
Router B
Router C
AS 300AS 200AS 100
2.2.2.1
2.2.2.21.1.1.1
1.1.1.2
BGP NeighborBGP Neighbor
Figure 4.0
L0 172.16.90.1255.255.255.255
170.10.10.0
180.10.10.0
L0 172.16.2.254255.255.255.255
190.10.10.0
L0 172.16.40.1255.255.255.255
3.3.3.24.4.4.2
3.3.3.1
4.4.4.1
BGP Neighbor BGP Neighbor
L0 172.16.1.254255.255.255.255
CA*net 4 – Distributed OIX
AS 549ONetAS 271
BCnet AS 376RISQ
Figure 12.0
OBGP
OBGPOBGP
New York
Chicago
Seattle
ITN first step to global matrix of OBGP wavelengths?
With ITN to support international transit? North American transit through Abilene & CA*net 3 European transit through DANTE, Nordunet,
SURFnet, etc? Asian transit through APAN?
Eventually layer 3 transit to be replaced by wavelength transit? But use OBGP for wavelength management
Discussions are underway with international carriers to acquire initial wavelengths