UMN:CLI User Manual
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11.5 Routing Information Protocol Next Generation (RIPng)
RIP (Routing Information Protocol) is the first routing protocol for IP. Because of the
technical problems, new RIP, known as RIPv2 was developed. RIPng (Routing
Information Protocol Next Generation), defined in RFC 2080, is an extension of RIPv2 for
support of IPv6, the next generation Internet Protocol. RIPng is an entirely different
protocol and does not support IPv4.
RIPng uses the same timers and message types as RIPv2. RIPng has a 30 second
update timer and a 180 second hold down timer. The metric value of RIPng is also based
on hop count. The RIPng metric of a network is an integer between 1 and 15, inclusive. It
is set in some manner not specified in this protocol; however, given the maximum path
limit of 15, a value of 1 is usually used. A directly connected network has a metric of zero;
an unreachable network has a metric of 16. RIPng sends and receives the Routing
Protocol messages at UDP port 521.
The multicast IPv6 address used by RIPng is FF02::9. (Remember for RIPv2, it was
Class D IPv4 address 224.0.0.9).
11.5.1 Enabling RIPng
To enable RIPng, first define the RIPng routing process and then enable RIPng on each
interface. To define a RIPng routing process and open Router Configuration mode, use
the following command on Global Configuration mode.
Opens Router Configuration mode and defines RIPng
routing protocol.
Restores all configurations involved in RIPng to the
default.
If you configure the aggregation route under Router mode, the RIPng protocol must be
enabled.
To enable RIPng routing on the interface, use the following command on Interface
Configuration mode.
Enables the RIPng routing on the interface.
Disables the RIPng routing on the interface.
To enable/disable sending RIP route information through the specified interface, use the
following command.
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