Transcript PowerPoint - University of New Mexico

Provider Bridging
design for UNM
Campus - CPBN
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Outline of Topics
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Introduction
Obstacles
Fiber? Now What?
Wavelength Division Multiplexing
Ethernet-based Connections
QinQ 802.1Q multi-tagging now 802.1ad
How UNM and ABQG used to do it.
How UNM and ABQG are doing it Now
Design considerations
CPBN Design
Open for Discussion
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Introduction
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Edward May
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Network Engineer with the University of New Mexico
and ABQG (Albuquerque Gigapop)
http://www.unm.edu
http://abqg.unm.edu
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Obstacles
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Acquiring Fiber
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In no way does this presentation presume to
inform anyone on how to get more fiber, or any
at all for that matter.
One of the biggest obstacles can be getting
access to, or acquiring any fiber at all.
Often you just can’t get new fiber installed
Equipment cost versus Fiber cost
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Virtual resource versus physical resource.
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Fiber? Now What?
Growing Bandwidth Needs. And
everyone will say it is a NEED.
 Ethernet – almost all of our
connections are Ethernet these days.
1g or 10g
 Link Aggregation – use multiple fiber
pairs using Ethernet and bond them
together for additional bandwidth
 WDM – Wave Division Multiplexing
 802.1Q – Provider Bridging
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Wave Division Multiplexing
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Multiple carrier signals on the same pair of
fiber
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DWDM – Dense – narrower wavelengths
CWDM – Coarse – wider wavelengths
Allows for expanding capacity without
additional fiber installation.
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Color (light frequency) is used for the individual
signals.
Stealth.net
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Wave Division Multiplexing
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CWDM
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Transponders can be lower cost
~4-16 waves some might have
limitations
DWDM
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Some systems up to 160 different signals
each capable of 10gb/s
100gb/s on the way for some equipment
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BTI Systems example
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Ethernet-based Connections
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Ethernet is the Standard
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No Token Ring, FDDI, Firewire
Twisted Pair or Fiber, No 10base5 or
10base2 anymore
CenturyLink/Zayo/TWTC are offering
Metro Optical Ethernet or Ethernet
services, in much of their service area
Low-cost interfaces, cables and
connectors for copper
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QinQ 802.1Q multi-tagging
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The 802.1 Ethernet standard was amended to allow for
vlans within vlans.
Now called 802.1ad
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http://www.ieee802.org/1/pages/802.1ad.html
This adds a 12-bit Vlan ID field to packets.
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How we used to do it
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How we used to do it
DWDM Point to point system, with
transponders only.
 Redundancy
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Path
 Router Port
 Transponder
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Capable – OC, Ethernet, FC, Outside
wavelengths(or alien)
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How we do it now
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How we do it now
DWDM Point to point system, with
transponders and QinQ for gigE
services.
 Redundancy
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Path
 Router Port(if we wish)
 Transponder
 Ethernet
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Capable – OC, Ethernet, FC, Outside
wavelengths(or alien), Also Ethernet
“circuits” can be protected.
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Good and Bad
Easy configuration
 Rate limiting (tested it works)
 Ethernet standards plus Provider
bridging.
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Monitoring capabilities still lagging the
capabilities.
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Campus Connectivity Now
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Design Considerations
Monitoring service – costly to monitor
a fiber pair
 Private circuits
 Redundancy – sfp’s, fiber pairs, fiber
path, hardware
 Training costs/Hardware costs
 Reliability
 Maintenance and Operability –
Distance limitations/optical power loss
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UNM Network Re-Design
Move away from older and slower
large distributed routers
 Faster distributed switching for oncampus communications
 Capability of additional service
redundancy to buildings – sfp, fiber
pair, port
 Upgrade from 20Gbps backbone to
40Gbps with 100Gbps for campus and
Research networks
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Designs Considered
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MPLS to the building
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Distributed Routing/current model
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More expensive hardware/routing
platform, distributed routing
More expensive hardware, still
distributed
Provider Bridging
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Proven between ABQG and UNM, More
centralized routing and services capable,
manage circuits
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Migration in Process
Hardware deployed to Fiber Zones
 40Gbps up between FZ’s
 80Gbps up to new Core routers
 100Gbps up to new Core from ABQG
for campus and Research
 Local connections made to FZ routers
 Securing new Hardware, and
configuration in process,
 Migration of buildings begins soon
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Migration from Current
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100G for UNM
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CBPN and Research Network
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Open for Discussion
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Edward May
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[email protected]
277-8050
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References:
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802.1ad QinQ:
http://www.ieee802.org/1/pages/802.1ad.html
and http://en.wikipedia.org/wiki/802.1QinQ
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BTI Systems:
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Albuquerque Gigapop website:
http://www.btisystems.com
http://abqg.unm.edu
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Wikipedia is your friend. QinQ, WDM,
etc: http://en.wikipedia.org/wiki/IEEE_802.1ad2005
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