SIMULATION LAB
1. Seed metric for EIGRP must have the following characteristics:
Bandwidth=512 Kbps
2. Delay=100
3. Reliability=255
4. Load=1
5. MTU=1500
Seed metric for IS-IS must be set to 50.
Only redistribute Level-1 IS-IS routes into EIGRP.
Redistribute EIGPR routes into IS-IS as Level-1 routes.
Answer: Blockade# conf t
Explanation:
Blockade(config)# router isis
Blockade(config-router)# redistribute eigrp 100 level-1 metric 50
Blockade(config)# router eigrp 100
Blockade(config-router)# redistribute isis level-1 metric 512 10 255 1 1500
Blockade(config-router)# redistribute connected
Blockade# copy run start
Redistribution is the process of allowing routing information known in one routing protocol to
be shared with another routing protocol. It should be noted here that routing protocols arethe only items that can be redistributed into. You can redistribute such items as connected
interfaces, static routes, and default routes into a routing protocol.
There are two types of redistribution available: one-way redistribution and mutual
redistribution. One-way redistribution occurs when routing information contained in a routing
protocol is shared with another routing protocol, but the other routing protocol doesn’t share
its routing information with the sharing protocol. Mutual redistribution is the process of two
routing protocols sharing their routing information with each other.
IGRP and EIGRP IGRP and EIGRP are Cisco proprietary routing protocols. Both use a
composite metric made up of the following:
Bandwidth
Delay
Reliability
Load
IGRP is a classful routing protocol, whereas EIGRP is a classless routing protocol.
Remember: If IGRP and EIGRP are running on the same router and both of them are using
the same autonomous system number, they will automatically redistribute with each other. If
they do not have the same autonomous system number, you will need to manually
redistribute between them. These are the only IGPs we will discuss in this study guide that
behave in this manner.
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#router eigrp 100
R1(config-router)#redistribute isis level-2 metric 100 100 200 1 1500
R1(config-router)#^Z
R1#
This configuration will redistribute only the IS-IS Level 2 routes into EIGRP AS 100. If we
wanted all IS-IS routes to redistribute into EIGRP AS 100, we would need to use the
following configuration:
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#router eigrp 100
R1(config-router)#redistribute isis level-1-2 metric 100 100 200 1 1500
R1(config-router)#^Z
R1#
That’s really all there is to basic IS-IS redistribution. So far, we have described basic
redistribution into all of the IGPs covered in this study guide. We’re now going to look at
redistributing connected interfaces, static routes, and default routes into the different routing
protocols. We will then conclude the redistribution section with a look at VLSM to FLSM
redistribution and incorporating filters into redistribution.