Alcatel-Lucent 7210 SAS Configuration Manual page 39

loopback
Syntax [no] loopback
Context config>router>interface
Description This command configures the interface as a loopback interface.
Default
Not enabled
mac
Syntax mac ieee-mac-addr
no mac
Context config>router>interface
Description This command assigns a specific MAC address to an IP interface. Only one MAC address can be
assigned to an IP interface. When multiple mac commands are entered, the last command overwrites
the previous command.
The no form of the command returns the MAC address of the IP interface to the default value.
7210 SAS D, E OS Router Configuration Guide
broadcast format is specified for the IP address, the default value is host-ones, which indictates a
subnet broadcast address. Use this parameter to change the broadcast address to all-ones or
revert back to a broadcast address of host-ones.
The all-ones keyword following the broadcast parameter specifies that the broadcast address
used by the IP interface for this IP address will be 255.255.255.255, also known as the local
broadcast.
The host-ones keyword following the broadcast parameter specifies that the broadcast address
used by the IP interface for this IP address will be the subnet broadcast address. This is an IP
address that corresponds to the local subnet described by the ip-addr and the mask-length or
mask with all the host bits set to binary 1. This is the default broadcast address used by an IP
interface.
The broadcast parameter within the address command does not have a negate feature, which is
usually used to revert a parameter to the default value. To change the broadcast type to host-
ones after being changed to all-ones, the address command must be executed with the
broadcast parameter defined.
The broadcast format on an IP interface can be specified when the IP address is assigned or
changed.
This parameter does not affect the type of broadcasts that can be received by the IP interface. A
host sending either the local broadcast (all-ones) or the valid subnet broadcast address (host-
ones) will be received by the IP interface.
Default host-ones
Values
all-ones, host-ones
IP Router Configuration
Page 39