Technical Documentation

Configuring Dynamic Tunnels (NSM Procedure)

A Virtual Private Network (VPN) that travels through a non-MPLS network requires a generic routing encapsulation (GRE) tunnel. This tunnel can be either a static tunnel or a dynamic tunnel. A static tunnel is configured manually between two provider edge (PE) routers. A dynamic tunnel is configured using BGP route resolution. You can specify the type of tunnel to be dynamically created by including the tunnel-type option.

To configure dynamic tunnels in NSM:

  1. In the NSM navigation tree, select Device Manager > Devices.
  2. Click the Device Tree tab, and then double-click the device to select it.
  3. Click the Configuration tab. In the configuration tree, expand Routing Options.
  4. Select Dynamic Tunnels.
  5. Add or modify settings as specified in Table 1.
  6. Click one:
    • OK—Saves the changes.
    • Cancel—Cancels the modifications.

Table 1: Dynamic Tunnels Configuration Details

Task Your Action

Configure a dynamic tunnel between two PE routers
  1. Expand Dynamic Tunnels.
  2. In the Comment box, enter the comment.
  3. Click Dynamic Tunnel next to Dynamic Tunnels.
  4. Click Add new entry next to Dynamic Tunnel.
  5. In the Name box, enter the name of the dynamic tunnel.
  6. In the Source Address box, enter the source address.
  7. From the Tunnel Type list, select the type of tunnel to be dynamically created. The only valid value is gre (for GRE tunnels).
  8. Click Destination Networks next to dynamic-tunnel.
  9. Click Add new entry next to Destination Networks.
  10. In the Name box, enter the prefix name.
  11. In the Comment box, enter the comment.

Define tracing operations that track all routing protocol functionality in the router

  1. Click Traceoptions next to Dynamic Tunnels.
  2. Expand Traceoptions.
  3. In the Comment box, enter the comment for the traceoptions.
  4. Click File next to Traceoptions.
  5. In the Comment box, enter the comment for the filename.
  6. In the Filename box, enter the name of the file to receive the output of the tracing operation.
  7. In the Size box, enter the maximum trace file size.
  8. From the Files list, select the maximum number of trace files.
  9. Select one of the following:
    • Select no-world-readable—To restrict the file access to owner.
    • Select world-readable—To enable unrestricted access.
  10. Click Flag next to Traceoptions.
  11. Click Add new entry next to Flag.
  12. From the Name list, select the flag to perform the trace operation.
  13. In the Comment box, enter the comment for the flag.
  14. Select the Disable check box to disable the tracing operation.
  15. Select the modifier for the tracing flag. You can specify one or more of these modifiers:
    • Select the Send check box for packets being transmitted.
    • Select Receive check box for packets being received.
    • Select the Detail check box for detailed trace information.
    • Select the Disable check box to disable the tracing operation.

Published: 2009-08-23