Network of the aerial navigation

RENAR is the Network of the Aerial navigation (French).

Implemented at beginning of the year 90, RENAR is a network with packet switching of the type X25 able to function in the event of breakdown of order 2. RENAR consists of a principal grid inter CRNA and of switches in the great approaches and the terminal exchanges.

RENAR is mainly used to convey information radar where they are necessary and to offer a liaison department long distance to the systems of the Aerial navigation. RENAR is founded on technology DPN-100 of the Canadian manufacturer Northern Telecom (Nortel) and exploits the two operating processes of the packet switching:

mode off-line to the level of the sub-network (structure inter-switch)
and mode connected in periphery for the access of the users in protocol X25.

The switches of the type RM are used on the level of the structure inter-CRNA and support the principal grid of RENAR. The switches of the type AM are installed on the sites of the airports, where the concentration of users is weaker. The redundancy by construction of the grid network guarantees performance and fault-tolerance.

Backbone RENAR offers interconnections to 128 kbits/s between the great centers of the Aerial navigation and to 512kbits/s in Paris region.

The end-of-life of RENAR is planned (to date) for the end of 2010.

The team of DTI (ex- STNA) currently works on her replacement.

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