IS-IS redistribution

IS-IS redistribution
In the previous example, we redistributed routes from EIGRP AS 100 into IS-IS. This time,
let’s reverse the process, and in doing so, redistribute only the Level 2 routes from IS-IS into
EIGRP AS 100:
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
10.10.60.0 /24
10.10.50.0 /24
EIGRP AS 100
R1
IS-IS
Backbone
IS-IS
Area 1
10.10.100.0 /24 10.10.200.0 /24 10.10.20.0 /24 10.10.10.0 /24
172.16.24.0 /24 172.16.100.0 /24
Configuring Redistribution 345
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.