Ripv1; Ripv2; Ripv2 In Ripv1 Compatibility Mode - Lenovo RackSwitch G8264 Application Manual

RIPv1

RIPv2

RIPv2 in RIPv1 Compatibility Mode

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RIP version 1 use broadcast User Datagram Protocol (UDP) data packets for the
regular routing updates. The main disadvantage is that the routing updates do not
carry subnet mask information. Hence, the router cannot determine whether the
route is a subnet route or a host route. It is of limited usage after the introduction of
RIPv2. For more information about RIPv1 and RIPv2, refer to RFC 1058 and RFC
2453.
RIPv2 is the most popular and preferred configuration for most networks. RIPv2
expands the amount of useful information carried in RIP messages and provides a
measure of security. For a detailed explanation of RIPv2, refer to RFC 1723 and
RFC 2453.
RIPv2 improves efficiency by using multicast UDP (address 224.0.0.9) data packets
for regular routing updates. Subnet mask information is provided in the routing
updates. A security option is added for authenticating routing updates, by using a
shared password. ENOS supports using clear password for RIPv2.
ENOS allows you to configure RIPv2 in RIPv1compatibility mode, for using both
RIPv2 and RIPv1 routers within a network. In this mode, the regular routing
updates use broadcast UDP data packet to allow RIPv1 routers to receive those
packets. With RIPv1 routers as recipients, the routing updates have to carry natural
or host mask. Hence, it is not a recommended configuration for most network
topologies.
Note: When using both RIPv1 and RIPv2 within a network, use a single subnet
mask throughout the network.
Chapter 31: Routing Information Protocol
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