E-Book Content
IGRP Commands Use the commands in this chapter to configure and monitor Internet Gateway Routing Protocol (IGRP). For IGRP configuration information and examples, refer to the “Configuring IGRP” chapter of the Network Protocols Configuration Guide, Part 1.
IGRP Commands P1R-221
default-information
default-information To control the candidate default routing information between IGRP or Enhanced IGRP processes, use the default-information router configuration command. To suppress IGRP or Enhanced IGRP candidate information in incoming updates, use the no default-information in command. To suppress IGRP or Enhanced IGRP candidate information in outbound updates, use the no default-information out command. default-information {in | out} {access-list-number | name} no default-information {in | out}
Syntax Description in
Allows IGRP or Enhanced IGRP exterior or default routes to be received by an IGRP process.
out
Allows IGRP or Enhanced IGRP exterior routes to be advertised in updates.
access-list-number | name
Number or name of an access list. It can be a number in the range 1 to 99 or an access list name.
Default Normally, exterior routes are always accepted and default information is passed between IGRP or Enhanced IGRP processes when doing redistribution.
Command Mode Router configuration
Usage Guidelines This command first appeared in Cisco IOS Release 10.0. The access-list-number and name arguments first appeared in Cisco IOS Release 11.2. The default network of 0.0.0.0 used by RIP cannot be redistributed by IGRP or Enhanced IGRP.
Examples The following example allows IGRP exterior or default routes to be received by the IGRP process in autonomous system 23: router igrp 23 default-information in
The following example allows IP Enhanced IGRP exterior or default routes to be received by the IP Enhanced IGRP process in autonomous system 23: router eigrp 23 default-information in
P1R-222
Network Protocols Command Reference, Part 1
default-metric (IGRP and Enhanced IGRP only)
default-metric (IGRP and Enhanced IGRP only) To set metrics for IGRP or Enhanced IGRP, use this form of the default-metric router configuration command. To remove the metric value and restore the default state, use the no form of this command. default-metric bandwidth delay reliability loading mtu no default-metric bandwidth delay reliability loading mtu
Syntax Description bandwidth
Minimum bandwidth of the route in kilobits per second. It can be 0 or any positive integer.
delay
Route delay in tens of microseconds. It can be 0 or any positive number that is a multiple of 39.1 nanoseconds.
reliability
Likelihood of successful packet transmission expressed as a number between 0 and 255. The value 255 means 100 percent reliability; 0 means no reliability.
loading
Effective bandwidth of the route expressed as a number from 0 to 255 (255 is 100 percent loading).
mtu
Minimum maximum transmission unit (MTU) size of the route in bytes. It can be 0 or any positive integer.
Default Only connected routes and interface static routes can be redistributed without a default metric.
Command Mode Router configuration
Usage Guidelines This command first appeared in Cisco IOS Release 10.0. A default metric is required to redistribute a protocol into IGRP or Enhanced IGRP, unless you use the redistribute command. Automatic metric translations occur between IGRP and Enhanced IGRP. You do not need default metrics to redistributed IGRP or Enhanced IGRP into itself. Metric defaults have been carefully set to work for a wide variety of networks. Take great care in changing these values. Keeping the same metrics is supported only when red