The network is built with 10 Gbit/sec DWDM connections in a redundant infrastructure, connecting POPs (Point-of-presence) in 22 cities, nationwide, using redundant 2,5 Gbit/sec connections as access towards the universities.
All POPs in the core network are built in a very similar manner. They consist of two Cisco GSR 12410 routers, connected to the 10 Gbit/sec lambdas, which connect that POP with the ones in the neighboring cities. They also connect to a dark fiber-ring within the city, that connect the core POP with the Cisco 10720 access routers at the University, using 2,5 Gbit/sec DPT/SRP protocol.