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DUKE U
NIV
ERSITY•
•DUKE U
NIV
ERSITY
• WWW .O I T . DUK E . E DU•
Ivy+ Network / Telecom Update
Bob Johnson
Kevin Miller
April 29, 2008
DUKE U
NIV
ERSITY•
Metrics
• 6,247 undergraduate
• 6,744 graduate
• 2,730 faculty
• 30,700 staff (incl. med)
• 28K telephone lines
• 7 NXXs
• 15K voicemail boxes
• ~430 ACD agents
•DUKE U
NIV
ERSITY
• WWW .O I T . DUK E . E DU•
• 30,700 staff (incl. med)
• 8,600 acres
– 1,400 developed
• 48,000 wired ports (excl.
med)
• 7TB/day to & from
Internet
• ~430 ACD agents
• 5K CATV drops
• 800 – 800MHz
radios
DUKE U
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Campus Maps•DUKE U
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• WWW .O I T . DUK E . E DU•
DUKE U
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OIT Organization•DUKE U
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• WWW .O I T . DUK E . E DU•Credit: http://atom.smasher.org/construction/
DUKE U
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Fitzpatrick East Data Center
12,500 f2 total
Phase 1
4,000 f2 raised flr
1,000 f2 mech.
•DUKE U
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May 16, 2007 May 16, 2007
1,000 f2 mech.
4KW/rack
167 racks
~80% med
~20% campus
Phase 2
7,500 f2
“more” KW/rack
fewer racks
DUKE U
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Data Center Network•DUKE U
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DUKE U
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Outside Plant to Data Center•DUKE U
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September 6, 2007September 6, 2007
DUKE U
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Data Center Cold Aisle•DUKE U
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December 27, 2007December 27, 2007
DUKE U
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Data Center Network
• Pre-term fiber; dual paths to each rack
– Minimal infrastructure copper
• Rack level network switches (Cisco 3750E)
• Distinct broadcast domain from other data
•DUKE U
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• WWW .O I T . DUK E . E DU•
• Distinct broadcast domain from other data
centers
– Migrating existing network and moving hosts in old
data center
• Shared broadcast domain for VMWare/VMotion
– Asking VMWare for ‘vRouter’ functionality
DUKE U
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Data Center Fiber•DUKE U
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DUKE U
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Overhead Cable Trays•DUKE U
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• WWW .O I T . DUK E . E DU•
December 27, 2007December 27, 2007
DUKE U
NIV
ERSITY•
Current Voice Projects
• Unity Voicemail
– Migrating users
– Voicemail to email
• SS-7 to PRI
• Contact Center
– Planning Cisco UCCE
– UCCX systems
operational
•DUKE U
NIV
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• WWW .O I T . DUK E . E DU•
• SS-7 to PRI
conversion
– Almost complete
• Session Border
Controller
– Planning deployment
operational
• IVR
– In testing now
DUKE U
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•DUKE U
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DUKE U
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Firewalls, IPS virtualized for
each virtual network
(independent config, mgmt)
Migrating away from
•DUKE U
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Virtual networks known
as “VRF”s
DUKE U
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ERSITY• Traffic is processed
outbound by DEPT1
firewallTraffic is processed
inbound by PCI
firewall & IPS
•DUKE U
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Example: PC talking
to credit card
server
DUKE U
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Example: TIP client
•DUKE U
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Example: TIP client
talking to TIP
server
Traffic remains within TIP VRF,
even if client and server are in
separate physical locations
DUKE U
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Placement of SAS layer simplifies
implementation of security policy;
enables common application of
policy to equivalent devices/users
•DUKE U
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DUKE U
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802.11n
• Current 802.11a/b/g coverage – 60% of campus
(residence halls – hotspot only)
• 1:1 replacement of all 1,700 APs with
802.11a/b/g/n
•DUKE U
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802.11a/b/g/n
– Completion targeted for end-of-year 2008
• Adding ~800 APs in res halls (to 100% coverage)
– Completion by August 2008
• Powered with existing 802.3af (1x3 MIMO)
– Spot upgrades to pre-802.3at (2x3 MIMO)
DUKE U
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802.11n Pilot Experiences
• 40%+ connecting with
802.11n
– MacBook
– Dell, Lenovo, others
• 129Mbps+ peak 15
20
25
30
35
Sp
ee
d (
Mb
ps)
Wireless Throughput
11G Client, 11G AP
11G Client, 11N AP
11N Client, 11N AP (20MHz)
•DUKE U
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• 129Mbps+ peak
throughput (11n clients)
• 802.11g client: 2x faster on
11n AP compared to 11g
AP
– Especially pronounced at
greater distances
0
5
10
15
25 50 75
Sp
ee
d (
Mb
ps)
Distance from AP (ft)
DUKE U
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Current infrastructure
1700 APs
11 WiSM
•DUKE U
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+800 APs – Res. Halls60% Coverage
DUKE U
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802.11n Finances
• Evaluation of funding approach for wired and wireless networks
– Wireless installed with one-time funds
Wired network: ongoing refresh 10000
15000
20000
25000
30000
35000
40000
45000
50000
40
60
80
100
120
140
160
180
200
Wir
ed
Po
rts
Ex
pe
nse
s
Wired Network - Expenses v. Size
Wired network expenses
•DUKE U
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– Wired network: ongoing refresh budget
• 802.11n upgrade: advancing planned 4 year refresh cycle
• Observation: wired network size decreases, yet cost per port will increase (GbE, 10GbE)
0
5000
10000
0
20
40
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Wired network expenses
Wired ports
0
500
1000
1500
2000
2500
3000
3500
0
20
40
60
80
100
120
140
160
180
200
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Wir
ele
ss A
cce
ss P
oin
ts
Ex
pe
nse
s
Wireless Network - Expenses v. Size
Wireless network expenses
Wireless access points
DUKE U
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Other Data Projects
• Research Network Needs
– NLR FrameNet: 1Gbps path to Fermi Lab as
prototype for LHC connections
– Establishing 10Gbps to buildings for iSCSI,
•DUKE U
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– Establishing 10Gbps to buildings for iSCSI,
large scale data transfer
• Commodity Internet
– Significant growth w/ peering services (NTR,
CPS)
DUKE U
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CATV / IPTV Options
Content Middleware CAS Viewers
Time Warner
Cable
TWC IP Feed
(SD, HD)
Minerva VeriMatrix Minerva
(Win),
Motorola STB
Cisco TWC, Satellite Minerva Widevine Minerva
•DUKE U
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Cisco
(Scientific
Atlanta)
TWC, Satellite
IP Feed (SD,
HD)
Minerva Widevine Minerva
(Win), SA STB
InfoValue TWC, Satellite
IP Feed (SD,
HD)
IV IV IV (Win, Mac),
Amino STB
VideoFurnace Composite /
component
video (SD)
VF VF VF (Win, Mac,
STB)
DUKE U
NIV
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Emergency Communications
• Integration with text message aggregator
– Emergency and non-emergency, using LDAP groups
• Outdoor alert system – Federal, installed by 8/1
• Mass email system – complete
•DUKE U
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• Mass email system – complete
– Get us out of the critical path (web-based initiation)
– Bypass normal queues to guarantee rapid delivery
• Infrastructure upfit
– Cell/wifi network installations ramped up for campus
• Amcom e.Notify – “top 50” notification
DUKE U
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Home Access
• Time Warner Cable Business Class
• Discontinuing DSL reseller relationship
– Poor customer service
•DUKE U
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• WWW .O I T . DUK E . E DU•
– Low utilization
– Not competitive with underlying carriers
• Modem pool – 23 modems – discontinuing
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