- Ref : https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/16-5/configuration_guide/int_and_hw/b_165_int_and_hw_9300_cg.pdf
>...
GRE tunnels are supported on the hardware on Cisco Catalyst 9000 switches. When GRE is configured without
tunnel options, packets are hardware-switched. When GRE is configured with tunnel options (such as key,
checksum, etc.), packets are switched in the software. A maximum of 100 GRE tunnels are supported.
M.
-- ' 'Good body every evening' ' this sentence was once spotted on a logo at the entrance of a Weight Watchers Club !
