Specifications

mtu
92
sublayers in the Configuration Guide Vol. 1.
Table 8-3 MTU and the length of frames that can be sent or received
Line type mtu setting system mtu
setting
Length of a frame that
can be sent or received
(in octets)
Port MTU (in
octets)
10BASE-T (full and
half-duplex),
100BASE-TX
(half-duplex)
Not related Not related Tagged 1518
Untagged 1514
1500
All other cases Set Not related Tagged M1
#1
+18
Untagged M1
#1
+14
M1
#1
Not set Set Tagged M2
#2
+18
Untagged M2
#2
+14
M2
#2
Not set Tagged 1518
Untagged 1514
1500
#1: The value set by using the mtu command of interface.
#2: The value set by using the
system mtu command.
2. Use the same MTU value for the ports belonging to the VLAN. If the MTU is different,
the following operation is performed:
 If the MTU of the output port is smaller than the MTU of the input port, and the
length of the frames to be forwarded exceeds the maximum length of frames
that can be sent on the output port, the MTU on the output port is discarded.
Related commands
None