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Tulane’s Network Infrastructure
Tom Gerace
ISDS 774
September 8, 1999
Topics
 Tulane campus network
 From the inside to the outside
 Goldring/Woldenberg Hall to the Internet
 Connection to the Internet
 Hardware/Connections
 Protocols
Goldring/Woldenberg Hall
 100-Base-T (100 Mbps) switched Ethernet
 Cabletron Systems router (SSR-8)
 Cabletron Systems switches (SS-6000, SS-2200)
 Cabletron Systems hubs (ELS-100)
 10-Base-T (10 Mbps) switched Ethernet
 Cabletron Systems hubs (MicroMmac-80)
 Other hub manufacturers (Bay, Asante)
 Wired to central wiring closets on each floor
 Floors connected by copper riser
 Fiber riser work budgeted for FY 1999-2000
Goldring/Woldenberg Hall
 Connected to campus fiber backbone and the Internet
 Cabletron SmartSwitch Router (SSR-8)
 100 Mbps, full-duplex
 3 subnets managed behind our router
 129.81.28.x
 129.81.113.x
 129.81.234.x
 Major protocols
 TCP/IP
 IPX
Notebook connectivity
 Network connections throughout the
building provide connection to the Freeman
network and the Internet




76 in the Atrium
26 in the Library
40 (total) in Breakout rooms
“Connected” classrooms – 130, 140, 141, 151
The campus connection
 G/W Hall
 Router to campus fiber backbone
 Richardson Building
 Campus fiber backbone to router
 TCP/IP is the only allowed protocol on the campus fiber backbone
100 Mbps
G/W Hall
Richardson Bldg
RS/6000
Mailhost
Admin MVS systems
Router to Internet
The campus connection
 A buildings is connected to the campus backbone by a
router
 Card access system communicates over fiber backbone,
too
 Building/room access
 Security gates
 Debit card
Campus connectivity (now)
 Connection to other campuses and ISP
 3-port NMLI
 Native Mode LAN Interface
 10 Mbps
 Uptown, Medical Center, BellSouth
 Creates a “bridged domain”
 Looks like a big Ethernet segment
 Connected to Cisco router
Campus connectivity (now)
Uptown
Internet
10 Mbps
ISP
Medical Center
10 Mbps
Campus connectivity (future)
 Connection to other campuses and ISP
 Frame relay over DS3
 Full DS3 (45 Mbps published standard)
 CIR 15 Mbps
 Single connection Uptown
 Med Center connected to Uptown by 100 Mbps link
 Connected to a Cisco 7507 router
Campus connectivity (future)
Uptown
Internet
100 Mbps
ISP
Medical Center
15 Mbps
ISP Connectivity
BellSouth (the world)
 Full DS3 out of New Orleans

 45 Mbps
 Connected to Dallas and Houston
 Pipe gets larger as you get closer to the hub
Tulane Dial-up
Managed by TIS
 Ascend Max (17)
 391 total lines
 All lines are PRI

 Primary rate interface
 Digital back to switch
 Support PPP and asynchronous (character-based)
 Point-to-Point Protocol
Internet 2
 Will be packet over Sonet
 Synchronous Optical Network
 At STS-3 (155 Mbps)
 A published standard Sonet speed
 Reserved for research
Thank you!