When a packet to be transmitted from the Radio interface is longer than the MTU (Maximum Transmis-
sion Unit) set, the RipEX router performs standard IP fragmentation. A packet longer than the configured
size is split into the needed number of fragments, which are then independently transmitted - the first
packet(s) is (are) transmitted fragment-size long, the last packet contains the remaining bytes. The
reassembly of the fragments into the original packet normally takes place in the unit at the end of the
path.
Reducing the maximum length of a frame on a Radio link may improve its performance under unfavour-
able conditions (interference, multi-path propagation effects). However the recommended place to
determine the packet size is the actual user interface, e.g. a COM port. Note that the IP fragmenting
is possible in the Router mode only.
7.3.3. ETH
* Active only when Router mode
Fig. 7.6: Menu Ethernet
IP
Default = 192.168.169.169
IP address of ETH interface
Mask
Default = 255.255.255.0
Mask of ETH interface
Default GW
Default = 0.0.0.0 (= not active)
When Operating mode is set to Bridge, it is the default gateway (applies to whole RipEX). When Oper-
ating mode is set to Router, it is not displayed here. Default GW can be set only in the Routing menu.
DHCP*
List box: Off, Server
Default = Off
RipEX Radio modem & Router – © RACOM s.r.o.
92
Advanced Configuration
Summary of Contents for RipEX 1.5
Page 2: ......
