Update Fabric MTU

To update the fabric-wide MTU setting from the GUI:
  1. From the blueprint, navigate to Staged > Fabric Settings > Fabric Policy and click Modify Settings.
    Configuration interface for network management system's Fabric Settings section with tabs like Dashboard, Analytics, and Staged selected. Shows MTU Settings, Fabric Design with enabled Routing Zone Footprint Optimization, Route Options with unlimited maximum route counts, Vendor Specific settings for Junos, and Anti Affinity Mode disabled. Modify Settings button available.
    The Modify Fabric Policy Settings dialog opens.
  2. Enter the new fabric MTU in the Fabric MTU field.
  3. Click Save Changes to save your changes and return to the Fabric Policy page.

When you're ready to activate your changes, commit them from the Uncommitted tab.

Note: Additional granular MTU update capabilities:

  • To update the global default settings for SVIs and IP link MTUs, update the Default IP Links to Generic Systems MTU and/or the Default SVI L3 MTU fields in the Virtual Network Policy.

  • To update the MTU on a specific SVI, update the L3 MTU field in the corresponding virtual network.

  • To update the MTU on subinterfaces, update the L3 MTU field in the IP Link connectivity template primitive.

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