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884 | Routing Information Protocol
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Figure 42-5. show ip protocols Command Example
Generate a default route
Traffic is forwarded to the default route when the traffic’s network is not explicitly listed in the routing
table. Default routes are not enabled in RIP unless specified. Use the
default-information originate
command in the ROUTER RIP mode to generate a default route into RIP. In FTOS, default routes received
in RIP updates from other routes are advertised if the
default-information originate command is
configured.
To configure FTOS to generate a default route, use the following command in the ROUTER RIP mode:
Use the
show config command in the ROUTER RIP mode to confirm that the default route configuration
is completed.
Summarize routes
Routes in the RIPv2 routing table are summarized by default, thus reducing the size of the routing table
and improving routing efficiency in large networks. By default, the
autosummary command in the
ROUTER RIP mode is enabled and summarizes RIP routes up to the classful network boundary.
Command Syntax Command Mode Purpose
default-information originate [always] [metric
value] [route-map route-map-name]
ROUTER RIP Specify the generation of a default route
in RIP. Configure the following
parameters:
• always: enter this keyword to
always generate a default route.
• value range: 1 to 16.
• route-map-name: name of a
configured route map.
FTOS#show ip protocols
Routing Protocols is RIP
Sending updates every 30 seconds, next due in 11
Invalid after 180 seconds, hold down 180, flushed after 240
Output delay 8 milliseconds between packets
Automatic network summarization is in effect
Outgoing filter for all interfaces is
Incoming filter for all interfaces is
Default redistribution metric is 1
Default version control: receive version 2, send version 2
Interface Recv Send
FastEthernet 0/0 2 1 2
Routing for Networks:
10.0.0.0
Routing Information Sources:
Gateway Distance Last Update
Distance: (default is 120)
FTOS#
RIPv2 configured
globally
Different RIP versions
configured for this
interface