FUJITSU M8000 User Manual
Page 259
setroute(8)
System Administration
237
-h
Displays usage statement. When used with other options or
operands, an error occurs.
-m
address
Specifies the netmask to which routing information is forwarded.
The specified value is a set of four integer values delimited by
the "." (period). The following address form is accepted:
xxx.xxx.xxx.xxx
xxx
An integer from 0–255. Zero suppression can
be used to specify the integer.
If the -m option omitted, one of the following netmask values is
set depending on the address specified in the -n option. If you
specified 0.0.0.0 in the -n option, do not specify the -m option.
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In case of a "class A" address:
If the host portion of the address (lower 24 bits) is "0" (e.g.
20.0.0.0), then the netmask value 255.0.0.0 will be set.
If the host portion of the address (lower 24 bits) is other than
"0" (e.g. 20.18.108.10), then the netmask value
255.255.255.255
will be set.
■
In case of a "class B" address:
If the host portion of the address (lower 16 bits) is "0" (e.g.
136.18.0.0), then the netmask value 255.255.0.0 will be set.
If the host portion of the address (lower 16 bits) is other than
"0" (e.g. 136.18.108.10), then the netmask value 255.255.255.255
will be set.
■
In case of a "class C" address:
If the host portion of the address (lower 8 bits) is "0" (e.g.
200.18.108.0), then the netmask value 255.255.255.0 will be set.
If the host portion of the address (lower 8 bits) is other than
"0" (e.g. 200.18.108.10), then the netmask value 255.255.255.255
will be set.