Specifications

242 Chapter 8. Command Reference
The management IP address is separate from the IP address used for IP address translation. The IP address used
for address translation is generally a public IP address valid on the Internet. It is set by the eth ip addr command
(page 231).
Note: The management address is not effective until after the next save and reboot.
Note: To use the management address as the source address for a ping, you must specify it using the -I option on
the ping command (page 194). For example, to use management address 192.168.1.2 when pinging destination
address 192.168.100.100, specify:
ping -I 192.168.1.2 192.168.100.100
Note: To use the management address as the source address for a copy, you must specify both the source and
destination addresses on the copy command (page 200).
To list the current management address for the Ethernet interface, if any, use the eth list command (page 248). To
set a management address for the WAN interface, see remote setMgmtIpAddr (page 281).
ipaddr IP address (4 decimals separated by periods).
ipnetmask IP subnet mask (4 decimals separated by periods).
interface Ethernet interface. This parameter may be omitted if the router has only one Ethernet interface.
If the router has two physical Ethernet interfaces (an Ethernet hub router), the port number (0 or
1) must be specified.
To specify a logical interface other than logical interface 0, specify both the port number and the
logical interface number (<port #>:<logical #>, for example, 0:1).
Example:
# eth ip mgmt 10.0.0.2 255.255.255.0 0:1
# save
# reboot
ETH IP MTU
Sets the maximum transfer unit for the Ethernet interface. The default is 1500 bytes.
You can set the MTU size to less than 1500 bytes, but you cannot set the MTU to greater than 1500 bytes, even if
you specify a larger value on an eth ip mtu command. (RFC 1042 recommends 1500 bytes as the maximum MTU
for an Ethernet network.)
To see the current MTU size for an interface that has IP enabled, use the ipifs command (page 191).
size Maximum number of bytes that can be transferred as a unit.
interface Ethernet interface. This parameter may be omitted if the router has only one Ethernet interface.
eth ip mgmt <ipaddr> <ipnetmask> [<interface>]
eth ip mtu <size> [<interface>]