NEC SOPHO IP 5000 Command Reference Manual page 127

loopback
mtu
speed
Command Reference Guide
Syntax
loopback
undo loopback
View
Ethernet interface view
Parameter
None
Description
Using the loopback command, you can enable an Ethernet interface to perform
loopback. Using the undo loopback command, you can disable loopback.
By default, the Ethernet interface is disabled to perform loopback.
You must enable the Ethernet interface to perform loopback only for the
purpose of testing some special functions.
Example
Enable the Ethernet interface to perform loopback.
[NEC-PHILIPS-Ethernet0/0/0]loopback
Syntax
mtu size
undo mtu
View
Ethernet interface view
Parameter
size: MTU size on the Ethernet interface, which is in bytes. It is in the range of
46 to 1500 if the adopted frame format is Ethernet_II.
Description
Using the mtu command, you can set the maximum transmission unit (MTU) of
the Ethernet interface.
Using the undo mtu command, you can restore the default configuration.
MTU defaults to 1500 if the adopted frame format is Ethernet_II.
The MTU setting of an Ethernet interface can affect the assembly and
fragmentation of IP packets on the interface.
For a related command, see display interface.
Example
Set MTU of the Ethernet interface to 1492.
[NEC-PHILIPS-Ethernet0/0/0]mtu 1492
Syntax
speed { 10 | 100 | negotiation }
undo speed
View
Ethernet interface view
SOPHO
IP 5000/SOPHO IP6000
127