- Written by Adrian Fettes
- Posted on June 5, 2020
- Updated on May 20, 2024
- 5717 Views
GRE ( Generic Routing Encapsulation ) packet header has a Key extension which is used by Arista to carry packet metadata. Currently packets mirrored at egress to a GRE tunnel destination do not have this information. This feature could be used to enable metadata in egress mirrored packets to GRE destinations.