Updates in IPAM Server 2016 Feature/Functionality Reporting in the IPAM management console.Remote administration support through RSAT.IP address lease and login event tracking.Service and zone monitoring of DNS services.Static IP inventory management, lifetime management, and DHCP and DNS record creation and deletion.IP address space utilization statistics and trend monitoring.IPv4 and IPv6 address space planning and allocation.IPAM collects information from domain controllers and Network Policy Servers (NPSs), and then stores that information in the Windows Internal Database. IPAM enables the administration and monitoring of DHCP and DNS and provides a comprehensive view of where IP addresses are used. To help organizations manage IP addresses, Windows Server 2016 provides the IP Address Management (IPAM) tool. Maintaining an updated list of static IP addresses that have been issued has often been a manual task, which can lead to errors. IPAM automatically discovers IP address infrastructure servers and Domain Name System (DNS) servers on your network and enables you to manage them from a central interface. This document details the configuration of the uBR7100 and Cisco Network Registrar for bridged network.The Microsoft IP Address Management (IPAM) is an integrated suite of tools to enable end-to-end planning, deploying, managing and monitoring of your IP address infrastructure, with a rich user experience. Unlike the uBR7200, the uBR7100 can be used as a bridge. The bridging configuration consists of disabling IP routing, putting all of the interfaces in one bridge group, and configuring the cable interface. In this configuration, routing functions are done on the uBR7100's gateway/router. Since the routing functions are not done on the uBR7100 the configuration is streamlined. The bridging configuration puts the Cisco Network Registrar (CNR) server on the same network as the CMTS and the cable modems. CNR can reside behind the gateway/router, in which case the gateway is configured with an IP helper address to route broadcasts between the cable modems and the CNR. This configuration was developed and tested using the following:Ĭisco uBR7100 Series Universal Broadband Routers running Cisco IOS version 12.10EC1Ĭisco Network Registrar (CNR) running V 5.5 The reader should have a basic understanding of the DOCSIS protocol and the Cisco IOS® command line on the uBR series routers.īefore You Begin Conventionsįor more information on document conventions, see the Cisco Technical Tips Conventions. The information presented in this document was created from devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If you are working in a live network, ensure that you understand the potential impact of any command before using it. Background Theoryįrom the customer prospective DOCSIS is "plug and play," meaning that the cable modem is automatically configured from the network. When the cable is plugged in for the first time it will scan the downstream for a DOCSIS carrier. The modem will lock on to the first DOCSIS carrier it detects. The Upstream Channel Descriptor (UCD), which the cable modem reads from the downstream carrier, tells the modem how to transmit. The UCD has forward error correction (FEC) parameters, upstream frequency, modulation type, and symbol rate. Once the cable modem and the CMTS agree on the appropriate transmit level the modem will initiate the Dynamic Host Configuration Protocol (DHCP) process. The CNR server should hear the modems discover. The modem and the CNR server will exchange a series of messages that result in the modem having IP connectivity to the rest of the network. Once the modem has IP connectivity it can request Time of Day (ToD) and download its cable modem configuration file. Once the modem is configured it will send a registration request to the CMTS. If Baseline Privacy (BPI) is not enabled, the modem will register with the CMTS. If BPI is enabled, the modem will exchange encryption keys with the CMTS before being fully registered. In bridge mode all of the interfaces on the CMTS are configured in one bridge group. All interfaces associated with the bridge group are considered a part of the broadcast domain. This means that every device associated with one of these interfaces will hear broadcasts from all devices in the bridge group. This is convenient, since we can put the CNR server, the CMTS and the cable modems on the same network.
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