The POTI network has approximately 62 km of fiber optic cable, making use of loop-controlled ring topology. This topology was adopted to avoid network service interruption in case of accidents, as it is possible to have connection redundancy with the use of this topology.
The main belt consists of 24-pair fiber cables and access to the institutions is made with 12-pair cables.
The fibers are aerial and self-sustaining in the posts of partner Eletrobrás - Distribuição Piauí. So an infrastructure swap was made - the company ceded its poles to optical cable crossings in exchange for using a pair of fibers to interconnect its substations in this capital.
For network redundancy control, we use the "Ethernet Automatic Protection Switching (EAPS)" protocol that is used to create a fault tolerant topology, where it is configuring a primary and secondary path for each VLAN.
The network assets that make the communication are L3 switches, that is, devices that operate in layer 2 (ENLACE) but that have functionality of a router (Network Layer). Thus it is possible to do routing within the POTI network with OSPF, for example.
The nominal network operating speed is 1Gbps for each site, with the possibility of unlimited expansion of this capacity in the future.