IS-IS

IS-IS
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#router isis
R1(config-router)#redistribute connected metric 0 metric-type external
R1(config-router)#^Z
R1#
As you can see, redistributing connected interfaces into the routing protocols is really no different
from redistributing another routing protocol into them.