Examine the P2MP LSP Tunnels

After open an existing specification file or creating a new specification file after configuration file import, you are ready to examine the P2MP LSP tunnels that are configured in your network. The tool allows you to easily examine the sub-LSPs that belong to a particular P2MP. In NorthStar Planner, P2MP LSPs are appropriately and conveniently represented as multicast trees. For instance, in the following sample network, two P2MP LSPs have been defined in the network. Select the Tunnel layer button to switch to the Tunnel layer, to look at P2MP multicast trees rather than IP multicast trees. Go to NetInfo > Multicast > Multicast Tree to bring up the following window.

Figure 1: P2MP LSP tunnels Network management tool interface displaying a table of multicast trees with columns for names, source nodes, bandwidth, destinations, routed, average hops, max hops, crossovers, and lengths. Includes filter field and highlight buttons.

Network management tool interface displaying a table of multicast trees with columns for names, source nodes, bandwidth, destinations, routed, average hops, max hops, crossovers, and lengths. Includes filter field and highlight buttons.

The window presents summary information – such as source node name and number of sub-LSPs -- for all of the P2MP LSPs that are currently configured in the network.

To show the sub-LSPs that comprise the P2MP LSP, select the particular row corresponding to the P2MP2 LSP of interest and then click on the Highlight button. As shown in the following figure, the P2MP LSP named C_BLACK is highlighted in the topology map. On the P2MP LSP tree, a circle is drawn around the node that represents the source node (the ingress LSR) of the tree, while boxes are drawn around the leaf nodes (the egress LSRs for the sub-LSPs) of the tree.

Figure 2: Tree for the P2MP LSP Named C_BLACK Network topology map with nodes labeled as cities like Toronto and Chicago, showing connections. Below, a table labeled Multicast Trees details multicast routing with columns for name, source node, bandwidth, destinations, routes, average and maximum hops, and tree length.

Network topology map with nodes labeled as cities like Toronto and Chicago, showing connections. Below, a table labeled Multicast Trees details multicast routing with columns for name, source node, bandwidth, destinations, routes, average and maximum hops, and tree length.

To see a list of all the sub-LSPs that belong to a particular P2MP LSP tunnel, select P2MP Tunnels from the right-click menu of the Multicast Trees window. Subsequently, the tunnels (the sub-LSPs) associated with the particular P2MP LSP tunnel will be displayed.

Figure 3: P2MP Tunnels from the Right-Click Menu

Screenshot of a table titled Multicast Trees with multicast configurations. Contains columns like multicast tree name, source node, bandwidth, destinations, routes, average hop count, maximum hop count, crossovers, and length. Entries include C_BLACK from Toronto and C_BLACK_DIV from Chicago, both with 100.000M bandwidth, 28 destinations, and 28 routes. Context menu options Highlight and P2MP Tunnels are visible.

Figure 4: Sub-LSPs Associated With a Particular P2MP LSP Tunnel Instance Network management tool showing multicast tunnel details for network C_BLACK, including tunnel ID MCC_BLACK_SEATTLE, nodes TORONTO to SEATTLE, type R_DC_BLACK,MCC_BLACK, bandwidth 100.0M, and current route TORONTO-SEATTLE.

Network management tool showing multicast tunnel details for network C_BLACK, including tunnel ID MCC_BLACK_SEATTLE, nodes TORONTO to SEATTLE, type R_DC_BLACK,MCC_BLACK, bandwidth 100.0M, and current route TORONTO-SEATTLE.

In this particular example, the sub-LSPs associated with the P2MP LSP called C_BLACK are displayed. Notice that in the type field, the sub-LSPs are marked with the MCC_BLACK. In NorthStar Planner, the sub-LSPs for a particular P2MP LSP are marked with MC followed by the P2MP name in the type field.