Routes; Backup - RACOM RipEX User Manual

Advanced Configuration

7.4.2. Routes

■ Destination, Mask, Gateway
Each IP packet, received by RipEX through any interface (Radio, ETH, COM1 or COM2), has got
a destination IP address. RipEX (router) forwards the received packet either directly to the destination
IP address or to the respective Gateway, according to the Routing table. Any Gateway has to be
within the network defined by IP and Mask of one of the interfaces (Radio, ETH), otherwise the
packet is discarded.
Each line in the routing table defines a Gateway (the route, the next hop) for the network (group of
addresses) defined by Destination IP and Mask. When the Gateway for the respective destination
IP address is not found in the Routing table, the packet is forwarded to the Default gateway. When
Default gateway is not defined (0.0.0.0), the packet is discarded.
The network (Destination and Mask) can by specified in both formats. Either 10.11.12.13/24 in
Destination or 10.11.12.13 in Destination and 255.255.255.0 in Mask columns. RipEX displays and
converts both formats. There is also a balloon tip while the cursor is in the specific line on the Mask.
It shows which IP addresses are included in the network which is routed to the respective Gateway.
NOTE: Networks defined by IP and Mask for Radio and ETH interfaces must not overlap.

■ Backup

List box: possible values
Default = Off
Any Backup route defined in Backup table can be assigned to a specific route. In such a case
Gateway in the respective line of Routes table turns grey and serves only for information regarding
which gateway from alternative ones (defined in Backup table) is active. The same Backup can be
assigned for different routes.
■ Note
You may add a note to each route with your comments up to 16 characters (UTF8 is supported) for
your convenience. (E.g. "Central station" etc.). Following characters are not allowed:
" (Double quote)
` (Grave accent)
\ (Backslash)
$ (Dollar symbol)
; (Semicolon)
■ Active
You may tick/un-tick each route in order to make it active/not active. This feature is advantageous
e.g. when one needs to redirect some route temporarily. When Default GW is un-ticked to not active,
its Gateway is set to 0.0.0.0 and Backup is set to Off. The other lines keep their settings even when
not-active.
■ Modify
Delete and Add buttons allow to delete or add a line. One may order the lines using up and down
arrows.
7.4.3. Backup
RipEX is capable to test path between two RipEX IP addresses (even behind a repeater or LAN). When
the connection fails, RipEX automatically uses alternative gateway(s) defined in the Alternative paths
column with the priority according to the line sequence. The system always tries to use the route with
the highest priority, e.g. automatically switches back when the failed route starts to work.
162 RipEX Radio modem & Router – © RACOM s.r.o.