MTU Cheat Sheet


raw

Minimum headers for transportation of original L2 payload
GREv4
GREv6
GIFv4
GIFv6
EthIPv4
EthIPv6
L2TPv2-UDPv4
L2TPv2-UDPv6
L2TPv3-UDPv4
L2TPv3-UDPv6
VTUNv4
VTUNv6

NTT/PPPoE_v4

Minimum headers for transportation of original L2 payload
GREv4
GIFv4
EthIPv4
L2TPv2-UDPv4
L2TPv3-UDPv4
VTUNv4

NTT/PPPoE_v4+OCN_v6

Minimum headers for transportation of original L2 payload
GREv6
GIFv6
EthIPv6
L2TPv2-UDPv6
L2TPv3-UDPv6
VTUNv6

NTT/pre_isp_v4+OCN_v6

Minimum headers for transportation of original L2 payload
GREv6
GIFv6
EthIPv6
L2TPv2-UDPv6
L2TPv3-UDPv6
VTUNv6

NTTe/dnet_v6 = raw


NTTw/pre_isp_v4

Minimum headers for transportation of original L2 payload
GREv4
GIFv4
EthIPv4
L2TPv2-UDPv4
L2TPv3-UDPv4
VTUNv4

NTTw/pre_square_v6 = raw


OCN_v6

Minimum headers for transportation of original L2 payload
GREv6
GIFv6
EthIPv6
L2TPv2-UDPv6
L2TPv3-UDPv6
VTUNv6