- 128 "pc850" PC nodes (pc41-pc168), consisting of:
- 40 "pc600" PC nodes (pc1-40), consisting of:
- 160 diskless
Compaq DNARD "Sharks" edge nodes (sh[1-20]-[1-8]),
- 233 Mhz StrongARM processors.
- 32MB RAM.
- 1 10Mbps ethernet interface.
- a users, file, and serial line server (users.emulab.net), consisting of:
- a DB, web, DNS and operations server, consisting of:
Dell PowerEdge 2550 Rack Mount Server
- Single 1000MHz Intel Pentium III processor
- 512MB PC133 ECC SDRAM
- Dual-Channel On-board RAID (5) Controller 128MB Cache (2-Int Channels)
- Five 18GB Ultra3 (Ultra160) SCSI 10K RPM Hot Plug Hard Drives
- Dual Redundant 330 Watt Power Supplies
- Integrated Broadcom Gigabit BaseT and Intel Pro/100+ NICs
- a second serial line server, consisting of:
- a serial line server for critical emulab machines, consisting of:
- An ISP1100 box, like the "pc850" nodes above.
- a 4-port serial card.
Switches and Routers
Cisco 6509 high-end switches.
Three function as the
testbed backplane ("programmable patch panel"),
each filled with a
Network Analysis Module
and seven 48-port 10/100 ethernet modules,
giving 336 100Mbps ethernet ports on each. They are linked with 2 Gbit interfaces.
The final 6509 contains an MSFC router card and functions as the
core router for the testbed,
providing "control" interfaces for the test nodes as well as
regulating access to the testbed servers and the outside world.
This switch is configured with full router software,
Gigabit ethernet, OC-12 ATM (~600Mbps), and more
10/100 Ethernet ports.
- 10 APC MasterSwitch AP9210 8 port power controllers.
(The AP9210 is discontinued; replaced in the product line by the
BayTech RPC27 20 port remote power controllers.
Wrightline "Tech I" racks: 44U, 34" deep, 2 are
24" wide with cable management; the rest are 19" wide.
(Aug 2001: these appear to have been discontinued or renamed.)
Four ethernet ports on each PC node are connected to the
All 672 ports can be connected in arbitrary ways by setting up VLANs
on the switches via remote configuration tools.
Cisco 6500 Switch backplane bandwidth is supposed to be near 50Gb/s,
though between the testbed backplane switches,
bandwidth is currently limited to 2Gb/s.
The fifth ethernet port on each PC is connected to the
Thus each PC has a full duplex 100Mbps connection to the servers.
These connections are for dumping
data off of the nodes and such, without interfering with
the experimental interfaces. The only impact on the node is
processor and disk use, and bandwidth on the PCI bus.
The DNARD Sharks are arranged by "shelves." A shelf holds 8 sharks
each of which is connected by a 10Mbps link to an
8+2 10/100 ethernet switch from Asante. The Asante switches
are connected via a 100Mbps link to the testbed backplane.
Thus each shelf of 8 sharks
is capable of generating up to 80Mbps to the backplane.