- Written by Trevor Mendez
- Posted on July 2, 2025
- Updated on July 2, 2025
- 30 Views
BGP triggered IP-in-GUE Encapsulation provides a mechanism for dynamically creating tunnels in a core network using an IP underlay. IP-in-GUE (Generic UDP Encapsulation) encapsulates IP traffic in an IPv4/UDP header. IP unicast routes to destinations reachable across the core network are learned via BGP at the ingress edge.
- Written by Harish Pradyot
- Posted on July 1, 2025
- Updated on July 1, 2025
- 64 Views
This feature when configured enables users to rewrite the DSCP of the GUE encapsulated header on IP-over-UDP tunnels while preserving the TOS value of the inner IP ( IPv4 / IPv6 ) payload. Starting from software version 4.34.1F, the CLI configuration to enable or disable DSCP preserve globally on the egress interface introduces a clear distinction in the behavior of GUE encapsulation on the core facing interface of the IP-over-UDP tunnels.
- Written by Shan Zhang
- Posted on June 29, 2023
- Updated on November 6, 2024
- 6944 Views
Generic UDP Encapsulation (GUE) is a general method for encapsulating packets of arbitrary IP protocols within a UDP tunnel. While GUE supports an extensible header format with optional data, currently we only support the variant 1 header format, which directly encapsulates the IPv4/IPv6 payload without a GUE header.