Configuring Path MTU (NSM Procedure)

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

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.

Related Documentation

• Configuring Static Label Switched Path (NSM Procedure)
• Configuring Path (NSM Procedure)
• Configuring Statistics (NSM Procedure)