The following table describes the default MTU values that are dependent upon the (sub-) port type, mode, and encapsulation.
Port type |
Mode |
Encap type |
Default (bytes) |
|---|---|---|---|
Ethernet |
access |
null |
1514 |
Ethernet |
access |
dot1q |
1518 |
Port mode |
access |
qinq |
1522 |
Fast Ethernet |
uplink |
— |
1522 |
Other Ethernet |
uplink |
— |
9212 |
Ethernet |
hybrid |
— |
9212 |