User Manual
UMN:CLI
V8102
713
12.5
Routing Information Protocol Next Generation (RIPng)
RIP (Routing Information Protocol) is the first routing protocol for IP. Because of the tech-
nical 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 up-
date 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).
12.5.1
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.
Command
Mode
Description
router ipv6 rip
Global
Opens
Router Configuration
mode and defines RIPng
routing protocol.
no router ipv6 rip
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 Con-
figuration
mode.
Command
Mode
Description
ipv6
router rip
Interface
Enables the RIPng routing on the interface.
no ipv6
router rip
Disables the RIPng routing on the interface.
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