You can configure the MTU (maximum transmission unit) at the physical port level for Layer 2, IPv4, and IPv6.
In SLX-OS, you can use the show interface ethernet command to see the MTU configuration for an interface.
# efa inventory device interface set-mtu --ip 10.x.x.x --if-type eth --if-name 0/11,0/12 --mtu 1600 --ip-mtu 700 --ipv6-mtu 1800 Interface MTU Successfully Updated +-----+------+----------------+------+--------+----------+ | ID | Name | Interface Type | MTU | IP MTU | IPv6 MTU | +-----+------+----------------+------+--------+----------+ | 99 | 0/11 | ethernet | 1600 | 1700 | 1800 | +-----+------+----------------+------+--------+----------+ | 102 | 0/12 | ethernet | 1600 | 1700 | 1800 | +-----+------+----------------+------+--------+----------+ Interface MTU Details --- Time Elapsed: 42.769852714s ---