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    Configuring Path MTU (NSM Procedure)

    You can configure a path MTU (maximum transmission unit) which prevents fragmentation.

    To configure a path MTU :

    1. In the NSM navigation tree, select Device Manager > Devices.
    2. Click the Device Tree tab, and then double-click the device for which you want to configure a path MTU.
    3. Click the Configuration tab. In the configuration tree, select Protocols > Mpls > Path Mtu.
    4. To configure path MTU, select Enable Feature.
    5. Enter a descriptive comment about the path MTU in Comment.
    6. To fragment IP before encapsulating in MPLS, select Allow Fragmentation.
    7. Select Protocols > Mpls > Path Mtu > Rsvp.
    8. To configure this feature, select Enable Feature.
    9. Enter a descriptive comment about RSVP in Comment.
    10. To enable RSVP path MTU signaling, select Mtu Signaling.
    11. Click one:
      • OK—Saves the changes.
      • Cancel—Cancels the modifications.
      • Apply—Applies the path MTU or RSVP parameters.

    Published: 2013-01-06