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MPLS Configuration Overview
When you first install Junos OS on your device, MPLS is disabled by default. You must explicitly configure your device to allow MPLS traffic to pass through. Complete the following steps for all devices in your MPLS network that are running Junos OS.
To enable MPLS:
- Delete all configured security services from the device. If you do not complete this step, you will get a commit failure. See Example: Deleting Security Services.
- Enable MPLS on the device. See Example: Enabling MPLS.
- Commit the configuration.
- Reboot the device.
Configure MPLS features such as traffic engineering, VPNs, and VPLS. See:
 | Caution: When packet forwarding mode is changed to MPLS, all flow-based security features are deactivated, and the device performs packet-based processing only. Flow-based services such as security policies, zones, NAT, ALGs, chassis clustering, screens, firewall authentication, and IPsec VPNs are unavailable on the device. However, MPLS can be enabled in flow-based packet forwarding mode for selected traffic using firewall filters. For more information, please see the following application note: https://www.juniper.net/us/en/local/pdf/app-notes/3500192-en.pdf |
