TCP/IP Console commands
ATMOS Console Commands Reference Manual (Binary) DO-008530-PS, Draft B (26th April 2001)
173
•
PTP
•
Loopback
The device
must
provide the colored interface appropriate for that
type of device.
For a loopback interface,
<file>
is not used, and can just be
specified as “-” or omitted altogether.
Note that several different values of
<type>
specify the same class
of interface; they differ in that each implies a different default value
for
<file>
. As a result, for the most common interface
configurations,
<file>
can be omitted, and one need only specify
the appropriate value of
<type>
.
•
<mtu>
specifies the MTU (maximum transmission unit); that is, the
size of the largest datagram (excluding media-specific headers) that
IP will attempt to send through the interface. The value specified
will be ignored if it is larger than the maximum supported by the
interface class, which is currently 1500, unless the
IP-over-ATM
MTU
value has been changed in the TCP/IP build-time
configuration system file. Normally, there is no point in setting the
MTU less than this, so the
<mtu>
option is of little use.
•
<IP address>
is the IP address that this system uses on the
interface; if it is not specified, the interface will be disabled until an
IP address is supplied with the
ip enable
command.
For a loopback interface, the address should be set to
127.0.0.1
. (All
addresses of the form 127.*.*.* will then be recognized as loopback
addresses, as is normal practice.)
For non-loopback interfaces, the subnet mask for the local network
will be assumed to be
ff:ff:ff:00
(e.g. a class C network); if the
correct subnet mask is other than this then it will need to be set with
the
subnet
command (see
If there is a DHCP client in the system, the address can be set to
DHCP. This setting means that the IP address should be
learned
by
DHCP. For example:
ip device add ether ether dhcp
Note that DHCP is not supported on all interface types. For more
information, refer to
12.7.3 Example
prompt>
ip device
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