advertise different IP MTUs, they will not form an adjacency (unless OSPF
has been instructed to ignore differences in IP MTU with the ip ospf
mtuignore command).
The allowed range is 1298 to 9216. This allows for configuration of an IPv4
and IPv6 MTU of 1280 to 9198.
In conformance with RFC 2460, the system performs IPv6 path MTU
discovery for IPv6 packets originated by the switch. This may result in
individual connections using an IPv6 MTU less than that configured by the
network operator.
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Layer 2 Switching Commands