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IP Tunneling

  • Support for IP-over-IP tunnel stitching (MX Series, MX240, MX480, MX960, PTX1000, PTX10008, PTX10016, and QFX10002)—In Junos OS Release 21.3R1, we introduce IP-over-IP tunnel stitching. You can use this feature to terminate an IP-over-IP tunnel on a device and initiate another tunnel on the same device. When a device receives the IP-over-IP packet, it de-encapsulates the outer packet header and inner packet lookup occurs. The inner IP packet header then points to another tunnel on the same device, where the same device encapsulates the packet again with another IP-over-IP header.

    [See Overview of Next-Hop-Based Dynamic Tunneling Using IP-Over-IP Encapsulation.]