Transcript Bill St. Arnaud Presentation

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 R&E networks to route around large ISPs that
dominate the Internet by massive direct peerings with like minded
networks
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
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
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
BGP Peering Today
AS 1
Default Peering
AS 6
Transit Traffic
Large ISP
$$$$
AS 7
AS 3
AS 4
AS4 will do no cost peering
AS 1 has large traffic flows with AS 4
and ideally would like to establish
direct no cost peering with AS 4
BGP Peering Tomorrow
Optical switch is controlled by AS 1 who
decides which network it wishes to peer with
AS 1
AS 6
Default Peering
Transit Traffic
Large ISP
$$$$
AS 7
AS 3
AS 4
AS 4 Will do no cost peering
OBGP Peering Logical
Optical Cross Connect looks
like a BGP router within AS 1
AS 1
AS 1 has now direct peering
with AS 6 and AS4 and
bypasses AS 3 for this traffic
Default Peering
AS 6
Direct Peering
AS 7
At some future date AS 1 may
instead decide to peer with AS 7.
It would then terminate BGP
peering with AS 4 and establish a
new peer with AS 7
AS 4
Transit Traffic
Large ISP
$$$$
AS 3
AS 4 Will do no cost peering
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
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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
other’s presence
 OBGP protocol establishes link IP address assignment and serves as
intermediate proxy for all protocol negotiation