DGS-3610 Series Configuration Guide Chapter 27 RIP Routing Protocol Configuration
27.2.2 Configuration of Packet Unicast for
the RIP
The RIP is usually a broadcast protocol. If the RIP routing information needs to be
transmitted via the non-broadcast networks, you need to configure the router so that it
supports the RIP to advertise the route update packets via unicast.
To configure the packet update notification via unicast for the RIP, execute the following
commands in the RIP routing process configuration mode:
DGS-3610(conf-router)# neighbor ip-address
Configure the packet unicast notification for the
RIP
By using this command, you can also control which port is allowed to notify the RIP route
update packets, restrict a interface from notifying the broadcast route update packets. You
need to configure the passive-interface command in the routing process configuration
mode. For the related description about the route information advertisement restriction, see
the ―Route Filtering Configuration‖ section in the IP Routing Protocol Independent Feature
Configuration chapter.
When you configure the FR and X.25, if the address mapping has
specified the Broadcast keyword, you do not need to configure the
neighbor. The function of the Neighbor command is largely reflected in
reducing broadcast packets and route filtering.
27.2.3 Configuration of Split Horizon
When multiple devices are connected to the IP broadcast type network and the
distance-vector routing protocol is run, the split horizon mechanism must be used to avoid
loop routes. Split horizon can prevent the router from advertising some route information to
the port from which it learns such information. This behavior optimizes the route information
exchange between multiple routers.
However, split horizon may cause the failure of some routers to learn all the routes, for a
non-broadcast multi-access network (for example, frame relay, X.25 network). In this case,
you may need to disable split horizon. If a port is configured with an IP address, you also
need to pay attention to the split horizon problem.
To enable or disable split horizon, execute the following commands in the interface
configuration mode:
DGS-3610(config-if)# no ip split-horizon
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