![]() ![]() To save time, select all the affected views in the project browser, right click and apply the Renovation Zone Scope Box. Next, apply the scope box to all the views that will be using this crop. The blue dots that can usually be used to modify the crop region are now invisible, that’s because you can’t modify its boundary. The Crop Region of the View now matches the scope box limits. Assign the scope box that you’ve just created to the plan view. Under Extents, you will see the Scope Box parameter. Have a look at the Instance Properties of your floor plan view. Match it to your renovation area and give it a name.Ĭreate a Scope Box around renovation area. Go to the View tab and create a Scope Box. This is where the power of scope boxes can be used. That would work, but what if the project changes and the affected area gets bigger or smaller? You would have to adjust all the crop regions again. One workflow would be to adjust the crop region of each view manually. Altogether you will have approximately ten views that need the same crop region. Existing floor plan, demolished floor plan, new floor plan, reflected ceiling plans and finishes. You want the views to be cropped to fit the red rectangle. ![]() The area affected is on the right wing of the building. This document details the configuration of the uBR7100 and Cisco Network Registrar for bridged network.Scope Boxes are used to quickly crop views.Ĭonsider this office building renovation project. 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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