User's Manual

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Users Manual of CS-6306R
Chapter 45. Routing Configuration
Configuring RIP 45.1
45.1.1 Overview
The section describes how to configure the RIP. For details about RIP commands, refer to the setion “RIP
Commands” in “Network Protocol Command Reference”.
The routing information protocol (RIP) is still a commonly used interior gateway protocol (IGP), mainly applied
to small-scale networks of the same type. RIP is a classical distance vector routing protocol, which appears in
RFC 1058.
RIP uses the broadcast of the UDP packet to exchange the routing information. In the routing switch, the
update of the routing information is performed every 30 seconds. If a switch does not receive the update
information from the neighboring switches in 180 seconds, the switch is to label the route in the routing table
from the neighboring switch as “unavailable”. If the update information is still not received in the following 120
seconds, the switch will delete the route from the routing table.
RIP uses the hop count to balance the weight of different routes. The hop count is the number of switches that
a packet gets through from the information source and the information sink. The routing weight of the
directly-connected network is 0. The routing weight of the unreachable network is 16. Because the range of
RIP-using routing weight is small, it is not suitable for the large-scale network.
If the switch has a default route, the RIP declares the route to the pseudo-network 0.0.0.0. In fact, network
0.0.0.0 does not exist. It is just used in RIP to realize the default route. If RIP learns a default route, or the
default gateway and the default weight are configured in a switch, the switch is to declare the default network.
RIP sends the routing update information to the designated network interface. If the network that the interface
resides is not designated, the network cannot be declared in any RIP update information.
The RIP-2 of our switches supports plain text, MD5 authentication, routing summary, CIDR and VLSM.
45.1.2 Configuring RIP Task List
To configure RIP, the following tasks must be complete first. The task to activate RIP is mandatory, while other
tasks are optional.
 Starting up RIP
 Allowing RIP routing to update the single program broadcast
 Applying the offset to the routing weight
 Adjusting the timer
 Specifying the RIP version number
 Activating RIP authentication
 Forbidding routing summary
 Forbidding the authentication of the source IP address
 Configuring the maximum number of routes
 Activating or forbidding horizon split.
 Monitoring and maintaining RIP