## Appendix A LOT 1 – DATA COMMUNICATIONS TECHNICAL SPECIFICATION 

SERVICE 1: Redundant Internet access for the EMSA premises in Lisbon, operated via low-latency symmetric cent optics technology without contention. No restriction on protocols and ports should apply. This service must be operational by 25 April 2020 the latest 

EMSA requires a redundant, low-latency, symmetric Internet link to access Internet based on optical fibre connections. 

This service shall be delivered to the EMSA’s main Datacentre located on the 3rd floor of the EMSA Building at Cais do Sodré, 1249-206, Lisbon, Portugal. 

The required solution shall be redundant, fully active-active and based on two different fibres from two different operators entering from two different entry points into the EMSA premises. Besides following different paths and being operated by different telco  operators, the two fibres shall also not be terminated in the same fibre concentration point outside EMSA. It is the responsibility of the bidder to team up with another operator to provide the required redundant service. The price under this service is intended to be the total price covering the redundancy and it is not possible to charge for any amount of data traffic. 

The link cannot be subject to any traffic shaping, filtering or restrictions whatsoever on ports, protocols, time and amount of data traffic. 

During the initial setup, the Contractor will be required to implement the following routing scenario: 

a) Routing fully managed by EMSA: 

EMSA is a registered Local Internet Registry (LIR) in RIPE, under the name pt.emsa. EMSA will autonomously manage routing using its own routers, its own Provider Independent IP addresses: 

IPv4: 91.231.216.0/23 and 185.41.116.0/22 

IPv6: 2a04:8940::/29 

and its own advertisements in BGP for the EMSA Autonomous System (AS Number 57350). EMSA implements a multi-homing routing architecture, propagating simultaneously its routes to at least 3 different internet service providers. 

The two physical entrances are from the conducts described below: 

