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 switchto 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 Screenshot of a network tool interface showing multicast trees table with details like Name, Src Node, BW, Number of Destinations, Routed, Average Hop, Max Hop, Crossovers, and Length. Includes filter field, Highlight buttons, navigation icons, and tabs for other network sections. Title: Network Info.

Screenshot of a network tool interface showing multicast trees table with details like Name, Src Node, BW, Number of Destinations, Routed, Average Hop, Max Hop, Crossovers, and Length. Includes filter field, Highlight buttons, navigation icons, and tabs for other network sections. Title: Network Info.

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 simulation tool showing a map with color-coded nodes and links for telecom data routing. Includes a list of nodes, multicast tree info with bandwidth, routes, and hops, plus toolbar controls for map interaction.

Network simulation tool showing a map with color-coded nodes and links for telecom data routing. Includes a list of nodes, multicast tree info with bandwidth, routes, and hops, plus toolbar controls for map interaction.

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 Table showing multicast trees for network management, with columns for name, source node, bandwidth, number of destinations, routes, average and max hops, crossovers, and length.

Table showing multicast trees for network management, with columns for name, source node, bandwidth, number of destinations, routes, average and max hops, crossovers, and length.

Figure 4: Sub-LSPs Associated With a Particular P2MP LSP Tunnel Instance Screenshot of a network tool showing multicast tree tunnels for C_BLACK with details like ID, Node IDs, Type, BW, and routing for MCC_BLACK_SEATTLE.

Screenshot of a network tool showing multicast tree tunnels for C_BLACK with details like ID, Node IDs, Type, BW, and routing for MCC_BLACK_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.