Here's one: http://www.cisco.com/c/en/us/products/routers/crs-1-multishelf-system/index.html http://www.cisco.com/c/en/us/products/routers/crs-1-multishe... He

Here's one: http://www.cisco.com/c/en/us/products/routers/crs-1-multishelf-system/index.html http://www.cisco.com/c/en/us/products/routers/crs-1-multishe... Here's another: http://www.infinera.com/products/dtn.html http://www.infinera.com/products/dtn.html