Table: MTU default and maximum values lists the default and maximum MTU values for Fast Ethernet ports, cellular ports, and the WLAN interface.
For information about how to modify the MTU defaults, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Interface Configuration Guide, "Modifying MTU defaults".
Port type |
Mode |
Default |
Maximum |
|---|---|---|---|
Fast Ethernet |
Access/network |
1514 bytes (includes Ethernet header, but excludes Ethernet CRC) |
1622 bytes |
Cellular interface |
Network (PDN router interface) |
None Operators must configure this value on the PDN router interface to ensure correct operation of a cellular port. |
1486 bytes |
WLAN interface |
Access |
1500 bytes (non-configurable) |
1500 bytes (non-configurable) |