! -*- isisd -*-

hostname R1

router isis ROUTE0
  net 49.0001.0000.0000.0001.00

interface lo
  ip router isis ROUTE0
  isis passive

interface R1-eth1
  ip router isis ROUTE0
  isis circuit-type level-2-only

interface R1-eth2
  ip router isis ROUTE0
  isis passive

log file /tmp/R1-isisd.log debugging