Redistributing into IGRP and EIGRP

Redistributing into IGRP and EIGRP is similar to redistributing into RIP and OSPF except you must define each variable of the composite metric to arrive at the default metric:

router eigrp 100 redistribute rip metric 1544 100 255 1 1500 network

where the numbers in the redistribute command after the keyword metric specify:

• Bandwidth—In kilobits per second.

• Delay —In tens of microseconds. That is, 100 equals a hundred "tens" or 1,000 microseconds.

• Reliability A number from 0 to 255, where 255 is most reliable.

• Loading A number from 0 to 255, where 255 is a fully loaded (100% saturated) link.

• MTU (Maximum Transmission Unit)—In bytes.

For more information on IGRP and EIGRP metrics, see the sources listed in the Bibliography and at (or search for "igrp metric" on the Cisco Web site).

NOTE IDS automatically redistributes between IGRP and EIGRP when the autonomous system numbers are the same. You don't have to enter the redistribute command. It also adjusts the metrics as it redistributes, because the EIGRP metric is simply 256 multiplied by the IGRP metric ( EIGRP metric = IGRP metric x 256).

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