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  • I2CC – Internet2 Cloud Connect
  • DC – Direct Connect
  • TGW – Transit Gateway
  • VPC – Virtual Private Cloud

Internet 2

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Architecture

Cornell uses the Internet2 Cloud Connect (I2CC) service to private private connectivity of Cornell networks to Azure and AWS. Cornell has multiple 100Gbps connections to Internet2. In turn I2CC has multiple 5Gbps (as of ) connections to the major cloud vendors.

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Info
  • Cornell campus is connected to NYSERNET/I2 via two separate physical links, each 100Gbps. One link runs to Buffalo, and one runs to New York City.
  • I2 to Azure linkage is dual connectivity, with a physical maximum of 5Gbps. The actual capability of the I2-Azure link is limited by Express Route bandwidth configuration.
  • As of January 2023, Cornell does not have a I2CC link to GCP.
  • The 5Gbps connectivity between I2 and Azure/AWS is infrastructure shared with other I2CC customers.
  • See also the physical configuration details here: https://mapper.cit.cornell.edu/g46967a52/document/_/!index.html


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Cross-Account Architecture

The architecture used to provide Direct Connect service to Cornell AWS accounts utilizes AWS Transit Gateways (one per AWS region) in a central AWS account (cu-cit-network) to which VPCs in Cornell AWS accounts are attached. Multiple VPCs in a single AWS account can be attached to Direct Connect in this way. 

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