NK8000 network planning84Building Technologies 049_DMS_DMS8000_Application_Specification_Planning_MP4.81_A6V10063710_a_en.docCPS Fire Safety 09.2016Also, you will need to determine the following regarding the client’s network:· Maintenance times for the network (shutdown of the network)· Network utilisation (Load > 30 – 40 % is bad on shared network)· Collision rate (< 5% is good)· Stability of the network (> 99.9% is good)· Availability of the network (Downtime)· Access time to the network (timeouts/access time < 1 sec. is good)· Responsibility for the data transfer over the network· Building sites (dredgers destroy cables, etc.)· Redundancy of the network· UPS (uninterruptible power supply) for the network components?5.4.1 Information you need to give to your customerTo integrate FS NK8000 and management station products into a customer’s network,ensure that your customer is aware of the following information:· DHCP is not supported from any device;· NK823x support 10BaseT and 100BaseT, half-duplex and full-duplex mode;· Only Ethernet RJ 45 copper cable Cat. 5, 5E, or 6 is supported;· If the network is down, it is not possible to receive any information via the network;· The responsible person for the network is the customer, and not SiemensFS/FIS/SES. The customer should sign a contract that Siemens FS/SES disclaimsany liability for the customer’s existing network.Your customer will also need to know the following:· The IP-address for each NK82xx and each DMS PC (tell where the devices are in-stalled);· Redundancy network devices or paths available.5.4.2 Security and application port numbersMost companies use a Firewall or a Proxy server to protect the company network fromoutside. Also within a company’s network, rules exist, and not everything is allowed.For example, maybe only e-mail and File transfer applications are allowed, and Re-mote access (Telnet) is prohibited.Each of these applications has a Port number. This Port number identifies the type ofapplication. For example the Port number for the e-mail application (SMTP) is 25.Generally, the network administrator allows only a few Port numbers, and the rest areprohibited.