MSR路由器nat server、nat static和nat outbound的优先级
测试过程:
环境:
硬件:MSR30-20(V5平台)
软件:windows xp,CRT
拓扑:PC2(192.168.1.2)——(0/0)R(0/1)-202.0.0.1——PC1
原理:nat server没有NAT SESSION表,静态NAT有
配置:
[R]nat static 192.168.1.2 202.0.0.1
[R]int g0/1
[R-GigabitEthernet0/1]nat outbound static
[R-GigabitEthernet0/1]nat server protocol icmp global 202.0.0.1 inside 192.168.1.2
[R-GigabitEthernet0/1]qu
测试:
C:\Documents and Settings\Administrator>ping 202.0.0.1 –t
结果:
1. 没有去掉NAT SERVER的时候:
[R]dis nat session
No NAT sessions are currently active!
2. 去掉NAT SERVER的时候:
[R-GigabitEthernet0/1]undo nat server protocol icmp global 202.0.0.1 inside 192.168.1.2
[R]dis nat session
There are currently 2 NAT sessions:
Pro GlobalAddr:Port LocalAddr:Port DestAddr:Port
- 202.0.0.1 192.168.1.2 ---
GlobalVPN: --- LocalVPN: ---
status: 800 TTL: 00:05:00 Left: 00:04:54
ICMP 202.0.0.1:512 192.168.1.2:512 202.0.0.2:512
GlobalVPN: --- LocalVPN: ---
status: 9 TTL: 00:00:10 Left: 00:00:10
说明:
没有去掉NAT SERVER的时候,没有NAT
SESSION表;去掉后出现NAT SESSION表。根据NAT
SERVER没有SESSION表,而静态NAT有。
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案例意见反馈
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