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and applications support, and network experimentation facilities in support of U.S. science and

engineering research and education activities (see Figure 86 below).

Figure 86: AMPATH International Exchange Point

Network Experimentation Facilities: A National Laboratory for Advanced Network Research

Passive Measurement Analysis and Active Measurement Probe (OC-12 ATM). BERT Tester

connected to Ethernet fabric; ability to generate flows up to 10 Gbps. Syslog-ng facilties as well

as NTOP and Netflow logging/collection services housed at the AMPATH Rack LAN. GFP

Framing ­ VCAT/LCAS circuit provisioning capabilities using Cisco ONS 15454.

Applications Support: VRVS (Virtual Room Videoconferencing System)/EVO (Enabling

Virtual Organizations) reflector in the NAP of the Americas; a system whereby users can

collaborate virtually in multi-point audio/video conferencing.

AMPATH provides collocation space and network access to the CHEPREO Tier3 site via the

network infrastructure in place. OSG sites are interconnected via the national research backbone

and CHEPREO's Tier3 has ready access to the national research network backbones (National

Lambda Rail, Ultralight, and Internet2) via a Gigabit Ethernet connection to AMPATH's Ethernet

fabric. International connectivity to other CMS sites (such as Brazil's SPRACE and HEPGRID)

is also possible due to established peering relationships between AMPATH and research

networks in the State of Sao Paulo and Rio de Janeiro via direct connection using long haul fiber

links. More information regarding the CHEPREO Tier3 cluster can be found below.

150