Zte ZXR10 T1200, Руководство пользователя

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C h a p t e r
5
RIPng Configuration
Table of Contents
RIPng Overview.................................................................27
RIPng Basic Configuration...................................................29
Configuring RIPng Maintenance and Diagnosis .......................30
RIPng Configuration Example ..............................................30
RIPng Overview
As a mature route standard, Routing Information Protocol ( RIP ) is
widely applied in Internet, especially in some small and medium-
sized networks. Considering this situation and the compatibility
between RIP and IPvt6, Internet Engineering Task Force (
IETF )
alters the existing technology and sets the RIP standard under
IPv6, namely, RIP next generation (
RIPng ). It differs from RIPv2
in that it cancels route authentication.
As the UDP -based protocol, RIPng sends and receives packet
through Port 521. Generally, RIPng packets are classified into two
categories: request packets and update packets.
RIPng is not intended to create a completely new protocol but to
make necessary alternation to RIP, thus enabling it to adapt to
the routing requirements under IPv6. Therefore, RIPng has the
same working principle with RIP, except for changes in address
and packet format.
� Address Length
Both RIPv1 and RIPv2 are based on IPv4 and their address
field is 32-bit, while RIPng is based on IPv6 and all the applied
addresses are 128-bit.
� Subnet Mask and Prefix Length
RIPv1 is used in a network without subnets. In this way, RIPv1
cannot be used for propagation of Variable Length Subnet Mask
(VLSM) or for CIDR classless addresses. The function of sup-
porting subnet routing is added to RIPv2, and it can use subnet
mask to distinguish network routes and subnet routes.
IPv6 address prefix has explicit meanings; RIPng does not have
subnet mask any more but have prefix length. Similarly, due to
application of IPv6 addresses, it is not necessary to distinguish
network routes, subnet routes and host routes in RIPng.
� Protocol Application Scope
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