Encapsulation
Learn about encapsulating packets with
Generic Routing Encapsulation (GRE) headers. GRE provides a private secure path for
transporting packets.
You can configure outgoing-packets encapsulation with configured tunnel and L2/L3 parameters.
The following L2/L3 parameter configurations are required for GRE encapsulation:
- Outer destination MAC address (mandatory)
- Outer source MAC address (mandatory)
- Outer VLAN Tag (optional)
- Outer VLAN PCP (optional)
- Outer Source IPv4 address (mandatory)
- Outer Destination IPv4 address (mandatory)

Note
- Only IPv4 GRE encapsulation is supported in
NPB application.
- All flags in GRE encapsulation header are set to 0.