router

static route
 ip route [network] [subnetmask] [next hop]

# ip route 172.16.1.0 255.255.255.0 172.16.2.1

** default routes
# ip route 0.0.0.0 0.0.0.0 172.16.2.2
# sh ip route

dynamic

RIP
router [protocol]
network [network addr]

(**lab 3-1)
# router rip
# network 10.0.0.0 (classfull 로 subnet mask 전달안함)

#sh ip route
# sh ip protocols
# debug ip rip (<--> u all)

EIGRP
router [protocol] [AS NO]
network [network addr]

(**lab 3-2)
# router eigrp 500
* network 10.10.10.0
# network 192.168.5.16
# network 192.168.5.32

# clock rate 64000
# sh ip route
# sh ip protocols
# sh ip eigrp ne (neighbor)
# sh ip eigrp traffic
# debug ip eigrp

OSPF
router ospf [AS NO]
network [network addr] [wildcard-mask] area [area id]

**** wildcard-mask ****
와일드카드 마스크는 summarizing을 위해 계산
192.168.5.65/28 의 subnet mask 는 255.255.255.240 이고
와일드카드 마스크는 0.0.0.15

(** lab 3-3 참고)
# router ospf 500
# network 10.10.10.0 0.0.0.255 area 0
# network 192.168.5.32 0.0.0.15 area 0
# network 192.168.5.16 0.0.0.15 area 0
# network 192.168.5.64 0.0.0.15 area 0

# sh ip route
# sh ip ospf neighbor
# debug ip ospf events

VLSM (Variable-Length Subnet Mask)
172.16.1.0/24

172.16.2.0/24
                    -->  172.16.2.0/26
                           172.16.2.64/26
      172.16.2.128/26
                              -->  172.16.2.128/28
                172.16.2.144/28
         172.16.2.160/28
         172.16.2.176/28
       172.16.2.192/26
172.16.3.0/24