Nt1330 Unit 3 Network Analysis Paper

594 Words2 Pages

Many servers will have cluster services that will be able to detect network failures by running sophisticated algorithms. This plug-and-play functionality will allow of the server to detect when network cables and disconnected or when other connectivity issues might exist between the network adapter and the devices that it is connected to. These cluster services will be able to detect the health of the network interface on the serves by sending a heartbeat from one node in the cluster to another. This operational statuses of these nodes will then be monitored. The heartbeats that are send are single User Datagram Protocols (UDP) packets. The exchange of these packets will happen every 1.2 seconds and will be used to confirm that each of these …show more content…

The external hosts would correspond to an IP address that would be obtained. The cluster would test the LAN connection by making use of the Internet Control Message Protocol (ICMP). This protocol will echo requests to determine the scope of the network interface failure. If the ICMP is able to communicate with an external host, it would mean that the network interface would remain up and running and that node would be able to take ownership of that cluster. This would all depend on the LAN connectivity. Since the use of ICSP will echo requests in order to consume the LAN resources, it can only be used as a secondary method of determining a failure. The server cluster network interfaces that are configured only for the use on private communication between nodes will behave differently when a LAN failure is detected. This means that the private LAN should always be isolated so that all the cluster nodes will be the only computers that would be connected to the

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