Router

Basic setup

• show ip route summary

Administrative Distance

Routing Protocol	AD
Directly connected interface	0
Static route	1
OSPF	110
RIP	120

Static Route

• ip route 172.16.0.0 255.255.0.0 e0/0 192.168.12.2
• ip route 0.0.0.0 0.0.0.0 e0/0 192.168.12.2
• ip route 0.0.0.0 0.0.0.0 e0/1 192.168.13.3 10

OSPF (Open Shortest Path First)

• router ospf 1 // router ospf process-id
• interface fastEthernet 0/1
• ip ospf 1 area 0
• router ospf 1
• passive interface vlan 10
• interface vlan 10
• ip ospf 1 area 1
• show ip ospf interface brief
• show ip ospf neighbor
• show ip route ospf

NAT

• interface Ethernet0
  • ip address 192.168.1.1 255.255.255.0
  • ip nat inside
• interface Ethernet1
  • ip address 211.120.200.2 255.255.255.0
  • ip nat outside
• ip nat inside static 192.168.1.100 211.120.200.100

ACL

• https://www.cisco.com/c/zh_cn/support/docs/ip/access-lists/26448-ACLsamples.html