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1、实验拓扑
2、实验配置
R2配置
interface Vlan1
ip address 192.168.137.20 255.255.255.0
ip route 0.0.0.0 0.0.0.0 192.168.137.1
clock timezone GMT +8
ntp server 61.153.197.226
ntp master 1
R1配置
interface Vlan1
ip address 192.168.137.10 255.255.255.0
ip route 0.0.0.0 0.0.0.0 192.168.137.1
ntp server 192.168.137.20
R3配置
interface Vlan1
ip address 192.168.137.30 255.255.255.0
ip route 0.0.0.0 0.0.0.0 192.168.137.1
ntp peer 192.168.137.10