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    Live BGP Routing Tables

    Note: A license is required for BGP live routing table import. Please contact your Juniper representative for more information.

    The BGP routing table object file can be used by the routing engine to perform BGP table lookup according to the router’s actual BGP routing table. This routing table may include routes to IP addresses in other ASs for which there is insufficient information within the existing set of config files.

    To create the BGP Table Obj File from the live network, BGP routing tables are needed from each router.

    The following are the instructions for importing Juniper BGP routing tables:

    1. Put each router’s routing table output into a separate file and set the first line to be the word ‘hostname’ followed by the router’s hostname. If the file is too large, this can be done by concatenating a file with the hostname information with the file containing the router’s routing table output.
    2. Run the following commands to create the BGP routing table object file output_object_file .

      The following command creates the intermediate file group.firstAS:

      /u/wandl/bin/prefixGroup -firstAS routingtablefiles

      Next, use the group.firstAS file in combination with the routing table files to create the output BGP object file:

      /u/wandl/bin/routeGroup -o output_object_file -g group.firstAS routingtablefiles
    3. In the specification file, reference the output object file using the keyword livebgprtblobj=output_object_file
    4. After loading the network, you can decide whether or not to route according to the live BGP routing tables or not through the Tools > Options > Design, Path Placement > BGP options pane, by setting “Use Live BGP Table if Available” to true.

    Modified: 2016-11-08