Atlantis Land I-Storm A02-RA(Atmos)_ME01 Manual do Utilizador descarregar pdf (Página 77)

config.h ETHERNET_DEVICE_NAME “s//edd”

If a default file is not defined, the name ether is not supported. However, it is still

possible to define devices of type ether with an explicit filename.

The class IP-over-ATM includes both SVC-based and PVC-based IP-over-ATM;

the decision whether to use SVCs or PVCs is made at initialization, by testing the

interface colors of the file if it supports the Indigo interface, then SVCs are used,

and otherwise PVCs.

• <file> specifies the file name that will be opened to access the underlying device.

The device can be any of the following:

•Ethernet

•IP-over-ATM

•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 (eg. 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 subnet

on page

211).

If there is a DHCP client in the system, the address can be set to DHCP. This

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Atlantis Land I-Storm A02-RA(Atmos)_ME01 Manual do Utilizador Página 77