USRobotics NETServer/8 - Manual (Page 171)

Command Reference 10-21
MTU
This is the Maximum Transmission Unit (MTU) used with this
interface. MTU sets the largest frame or packet size that a
connection protocol will send. If an IP packet’s size is greater
than the MTU setting, it’s broken down into smaller pieces. IPX
packets larger than the MTU are discarded. Use the following
command:
set location <location name> mtu <value>
For IPX connections, the MTU must be set to 1500.
PPP connections are set between 100 and 1500 (default is 1500).
Note that either end of a PPP connection can negotiate for a
smaller MTU if necessary. SLIP connections are set between 100
and 1006 (default is 1006).
PPP Async Map
The PPP protocol supports the escaping of non-printing ASCII
characters. Escaping means that specific characters won’t be
sent, but will be replaced by a special set of characters. The
remote site then interprets this special set of characters as the
original characters.
The PPP Async Map is a bit-map of the 32ASCII control charac-
ters (the first 32 characters of the ASCII character set), repre-
sented as 8 hexadecimal digits. The order is actually big endian,
which means that the last bit of the last character corresponds to
the first ASCII character (Null) and so on. Use the following
command:
set location <location name> map <value>
For example, to escape the ASCII null character to a location
named Chicago the command would be
set location Chicago map 00000001
The default is 00000000 (do not escape any characters). We
recommend that you do not change this field unless specifically
required by your network.