CANARIE http://www.canarie.ca Next Generation IX Optical IX - OIX

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CANARIE http//www.canarie.ca Next
Generation IXOptical IX - OIX

• OBGP documentation and latest version of this
  document can be found at
• http//www.canet3.net

Bill.St.Arnaud_at_canarie.ca Tel [phone]
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OIX using OBGP
AS 200 170.10.10.0
ISP A
Optional Lightpath Route Server
Switch Ports are part of ISPss AS
ISP B
AS 300 180.10.10.0
AS 100 160.10.10.0
ISP C
AS 400 190.10.10.0
ISP D
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OBGP

• Proposed new version of BGP where control of
  optical routing and switches across an optical
  cloud is by the customer not the carrier
• Establishment of BGP neighbors or peers triggers
  process to establish light path cross connects
• Customers control of portions of OXC which
  becomes part of their AS
• Optical cross connects look like BGP speaking
  peers serves as a proxy for link connection IP
  address, loopback address, etc
• 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 RE networks to route
  around large ISPs that dominate the Internet by
  massive direct peerings with like minded networks

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OBGP Peering

• Technique for allowing automatic peering at IXs
  between consenting ISPs
• External routers are given control of specific
  ports on the OXC
• The router that controls switch can act as an
  optical route server notifying all peers of any
  new consenting OBGP peers
• External routers signal to each other if they
  wish to setup direct optical connection
• Choice of partner can be based on size of traffic
  flows
• Partners can be changed through a routing flap
• Prototype OBGP switch now under development at
  CANARIE
• Working with universities in Chicago area to
  deploy first OIX

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Business Case for Direct Peering

• Typical Internet transit costs - 1000/Mbps per
  month
• For 100 Mbps Internet transit then 100,000/mo
• But coast to coast 100 Mbps channel is 1000/mo
  (e.g. www.Cogent.com)
• New optical technology will reduce that cost
  further
• Compelling business case to do as much no-cost
  direct peering as possible
• See http//www.nanog.org/mtg-0010/tree.doc
• OBGP is a proposed protocol that will allow
  massive direct peerings
• Each optical switch is in effect a mini-IX to
  allow direct no cost peering
• OBGP will also automate peering relationships
• For example Telia claims that they save 75 in
  Internet transit fees with massive direct peering

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Target Market for OBGP

• University research and community networks who
  are deploying condominium fiber networks who want
  to exchange traffic between members of the
  community but who want to maintain customer
  control of the network at the edge and avoid
  recreating the need for aggregating traffic via
  traditional telco service
• E.g. Ottawa fiber build, Peel County, I-wire,
  SURAnet, G-Wire, CENIC DCP, SURFnet, etc etc
• Next generation fiber companies who are building
  condominium fiber networks for communities and
  school boards and who want to offer value added
  fiber services but not traditional telco service
• E.g. C2C, Universe2u, PF.net, Williams,
  QuebecTel, Videotron, etc
• Next generation collocation facilities to offer
  no-cost peering and wavelength routing
• Metromedia, Equinix, LINX, PF.net, LayerOne,
  Westin, PAIX, Abovenet.com, Colo.com, etc etc
• Over 500 Ixs and carrier hotels worldwide

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BGP Peering Today
AS 1
Default Peering
AS 6
Transit Traffic Large ISP
AS 7
AS 3
AS 4
AS 1 has large traffic flows with AS 4 and
ideally would like to establish direct no cost
peering with AS 4
AS4 will do no cost peering
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BGP Peering Tomorrow
Optical switch is controlled by AS 1 who decides
which network it wishes to peer with
AS 1
AS 6
Default Peering
Transit Traffic Large ISP
AS 7
AS 3
AS 4 Will do no cost peering
AS 4
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OBGP Peering Logical
Optical Cross Connect looks like a BGP router
within AS 1
AS 1 has now direct peering with AS 6 and AS4 and
bypasses AS 3 for this traffic
AS 1
Default Peering
AS 6
Direct Peering
Transit Traffic Large ISP
AS 7
At some future date AS 1 may instead decide to
peer with AS 7. It would then terminate BGP
peering with AS 4 and establish a new peer with
AS 7
AS 3
AS 4
AS 4 Will do no cost peering
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Why make OXC speak BGP?

• To date all optical networks have been designed
  around the single carrier cloud architecture
• Virtually no work done on interdomian optical
  network design
• With OBGP no need for underlying optical control
  plane
• No need to recreate an interdomain routing
  protocol and topology
• All optical switches look like mini IXs
• BGP is the only true interdomain, autonomous
  peering protocol
• Routing topology is conveyed through AS paths
• Changes in network topology can be conveyed
  through routing updates
• OXC can also be distributed with MPLambdaS or
  ODSI
• Routing policy is maintained at optical cross
  connects
• Routers on either side of an optical switch do
  not have to know of each others presence
• OBGP protocol establishes link IP address
  assignment and serves as intermediate proxy for
  all protocol negotiation