Ericsson ECN330, User Manual

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Configuring the ECN330-switch
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• There are several serious problems with RIP that should be considered.
First of all, RIP (version 1) has no knowledge of subnets, both RIP
versions can take a long time to converge on a new route after the failure
of a link or router during which time routing loops may occur, and its
small hop count limitation of 15 restricts its use to smaller networks.
Moreover, RIP (version 1) wastes valuable network bandwidth by
propagating routing information through broadcasts; it also considers
too few network variables to make the best routing decision.
6.20.9.1 Configuring General Protocol Settings
RIP is used to specify how routers exchange routing information. When RIP is
enabled on this router, it sends RIP messages to all devices in the network every
30 seconds (by default), and updates its own routing table when RIP messages
are received from other routers. To communicate properly with other routers
using RIP, the RIP version used globally by the router needs to be specified, as
well as the RIP send and receive versions used on specific interfaces
(page 429).
Command Usage
• When a Global RIP Version is specified, any VLAN interface not
previously set to a specific Receive or Send Version (page 429) is set to
the following values:
• RIP Version 1 configures previously unset interfaces to send RIPv1
compatible protocol messages and receive either RIPv1 or RIPv2
protocol messages.
• RIP Version 2 configures previously unset interfaces to use RIPv2
for both sending and receiving protocol messages.
• The update timer is the fundamental timer used to control all basic RIP
processes.
• Setting the update timer to a short interval can cause the router to
spend an excessive amount of time processing updates. On the
other hand, setting it to an excessively long time will make the
routing protocol less sensitive to changes in the network
configuration.
• The timers must be set to the same values for all routers in the
network.