高级路由实训1
高级路由技术 实训
实训拓扑：
根据上图，自己制作的拓扑图。
实训步骤方案预浏：
1. 在R1 R2 R3 R4 R5 R6的接口配置情况；
2. 查看R1 R2 R3 R4 R5 R6的运行配置。
3. 查看R1 R2 R3 R4 R5 R6的路由表
4. 测试EIGRP网络和OSPF网络的连通性 (R1与R5) , (R4与R5) , ( R1与R4)
5. 由于在R3上做NAT，实现能访问外网，测试内网和外网的连通性（R1到R6）,(R4到R6), (R5到R6),(R3上的NAT转换)，（debug nat trans信息）
实训项目方案的详细说明。
1. 在R1 R2 R3 R4 R5 R6的接口配置情况；
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/1 172.16.5.1 YES manual up up Loopback0 172.16.4.1 YES manual up up Loopback1 1.1.1.1 YES manual up up R1#
R2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.5.2 YES manual up up
Serial1/0 172.16.5.2 YES manual up up
Serial1/2 172.16.6.2 YES manual up up
Loopback0 2.2.2.2 YES manual up up
R2#
R3#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.16.0.3 YES manual up up
Serial1/2 172.16.6.3 YES manual up up
Serial1/3 202.83.131.1 YES manual up up
Loopback0 3.3.3.3 YES manual up up
R3#
R4#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.16.0.4 YES manual up up
Loopback0 4.4.4.4 YES manual up up
Loopback1 172.16.1.1 YES manual up up
Loopback2 172.16.2.1 YES manual up up
Loopback3 172.16.3.1 YES manual up up
R5#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.5.5 YES manual up up
Loopback1 192.168.1.1 YES manual up up
Loopback2 192.168.2.1 YES manual up up
Loopback3 192.168.3.1 YES manual up up
R5#
R6#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/2 202.83.131.2 YES manual up up
Loopback0 202.6.6.6 YES manual up up
2. 查看R1 R2 R3 R4 R5 R6的运行配置。
R1#show run R1的启动配置》》》》》》》》》》
Building configuration...
Current configuration : 1048 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R1
!
!
ip subnet-zero
!
!
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 172.16.4.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback1
ip address 1.1.1.1 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
ip address 172.16.5.1 255.255.255.0
ip ospf message-digest-key 1 md5 area1
OSPF区域1的MD5认证
serial restart-delay 0
clock rate 64000
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 1 authentication message-digest
OSPF 网络MD5认证
area 1 stub 这是那个末节区域
network 172.16.4.0 0.0.0.255 area 1
network 172.16.5.0 0.0.0.255 area 1
!
ip classless
ip http server
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end
R1#
R2#show run
Building configuration...
R2的启动配置》》》》》》
Current configuration : 1324 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R2
!
!
ip subnet-zero
!
!
no ip domain-lookup
!
!
key chain yansan
密码链 ID 密码
key 1
key-string 123
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
EIGRP网络的MD5认证
ip address 192.168.5.2 255.255.255.0
ip authentication mode eigrp 100 md5
ip authentication key-chain eigrp 100 yansan
speed 100
full-duplex
!
interface Serial1/0
ip address 172.16.5.2 255.255.255.0
ip ospf message-digest-key 1 md5 area1
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
ip address 172.16.6.2 255.255.255.0
ip ospf message-digest-key 1 md5 area0
serial restart-delay 0
clock rate 64000
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
redistribute ospf 1 metric 10000 100 255 1 1500
这是在EIGRP和OSPF网络上的
network 192.168.5.0
路由从发布了。
no auto-summary
呀，现在我正在学路由映射表，
!
下次可以用下。
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 0 authentication message-digest
area 1 authentication message-digest
area 1 stub
在是在ABR做的末节区域
redistribute eigrp 100 subnets
network 172.16.5.0 0.0.0.255 area 1
network 172.16.6.0 0.0.0.255 area 0
!
ip classless
ip http server
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
End
R3#show run
R3的启动配置*********
Building configuration...
Current configuration : 1386 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R3
!
!
ip subnet-zero
!
!
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface FastEthernet0/0
ip address 172.16.0.3 255.255.255.0
ip nat inside
ip ospf message-digest-key 1 md5 area2
speed 100
full-duplex
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
ip address 172.16.6.3 255.255.255.0
ip nat inside
ip ospf message-digest-key 1 md5 area0
serial restart-delay 0
!
interface Serial1/3
ip address 202.83.131.1 255.255.255.252
ip nat outside
serial restart-delay 0
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 0 authentication message-digest
area 2 authentication message-digest
area 2 range 172.16.0.0 255.255.252.0
network 172.16.0.0 0.0.0.255 area 2
network 172.16.6.0 0.0.0.255 area 0
default-information originate
!
ip nat pool YANSAN 202.83.131.1 202.83.131.1 netmask 255.255.255.0
ip nat inside source list 1 pool YANSAN overload
ip classless
ip route 0.0.0.0 0.0.0.0 202.83.131.2
这是那个ASBR的PAT地址转换的。
ip http server
!
access-list 1 permit 172.16.0.0 0.0.7.255
access-list 1 permit 192.168.0.0 0.0.7.255
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
End
R4#show run
R4的启动配置》》》》》》》》》》》
Building configuration...
Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R4
!
!
!
!
!
!
memory-size iomem 15
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 4.4.4.4 255.255.255.0
!
interface Loopback1
ip address 172.16.1.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback2
ip address 172.16.2.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback3
ip address 172.16.3.1 255.255.255.0
ip ospf network point-to-point
!
interface FastEthernet0/0
ip address 172.16.0.4 255.255.255.0
ip ospf message-digest-key 1 md5 area2
speed 100
full-duplex
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
router ospf 1
router-id 4.4.4.4
记得了，在R4 MD5 认证
log-adjacency-changes
area 2 authentication message-digest
network 172.16.0.0 0.0.0.255 area 2
network 172.16.1.0 0.0.0.255 area 2
network 172.16.2.0 0.0.0.255 area 2
network 172.16.3.0 0.0.0.255 area 2
!
ip classless
no ip http server
!
!
line con 0
exec-timeout 0 0
logging synchronous
transport input none
line aux 0
line vty 0 4
!
no scheduler allocate
end
R5#show run
R5的启动配置》》》》》》
Building configuration...
Current configuration : 1145 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R5
!
!
ip subnet-zero
!
!
no ip domain-lookup
!
!
key chain yansan
key 1
key-string 123
!
!
!
interface Loopback1
ip address 192.168.1.1 255.255.255.0
!
interface Loopback2
ip address 192.168.2.1 255.255.255.0
!
interface Loopback3
ip address 192.168.3.1 255.255.255.0
!
interface FastEthernet0/0
在EIGRP网络R5做的MD5认证
ip address 192.168.5.5 255.255.255.0
ip authentication mode eigrp 100 md5
ip authentication key-chain eigrp 100 yansan
ip summary-address eigrp 100 192.168.0.0 255.255.252.0
speed 100
在EIGRP网络的R5上做路由汇总
full-duplex
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 192.168.1.0
network 192.168.2.0
network 192.168.3.0
network 192.168.5.0
no auto-summary
!
ip classless
ip http server
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
End
R6#
R6的启动配置。。。。。。
R6#show run
Building configuration...
Current configuration : 788 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R6
!
!
ip subnet-zero
!
!
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 202.6.6.6 255.255.255.252
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
ip address 202.83.131.2 255.255.255.252
serial restart-delay 0
clock rate 64000
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
ip classless
ip route 202.83.131.0 255.255.255.0 Serial1/2
外网ISP端，通过一条静态路由返回。
ip http server
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end
3. 查看R1 R2 R3 R4 R5 R6的路由表
记得了，这个R1做了末节路由，只有LSA1 LSA2 LSA3,自动自成默认路由了。
R1#show ip route
Gateway of last resort is 172.16.5.2 to network 0.0.0.0
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback1
172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks
C 172.16.4.0/24 is directly connected, Loopback0
C 172.16.5.0/24 is directly connected, Serial1/1
O IA 172.16.6.0/24 [110/128] via 172.16.5.2, 00:14:35, Serial1/1
O IA 172.16.0.0/22 [110/129] via 172.16.5.2, 00:14:30, Serial1/1
O*IA 0.0.0.0/0 [110/65] via 172.16.5.2, 00:14:35, Serial1/1
R1#
R2#show ip route
Gateway of last resort is 172.16.6.3 to network 0.0.0.0
2.0.0.0/24 is subnetted, 1 subnets
C 2.2.2.0 is directly connected, Loopback0
172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks
O 172.16.4.0/24 [110/65] via 172.16.5.1, 00:14:41, Serial1/0
C 172.16.5.0/24 is directly connected, Serial1/0
C 172.16.6.0/24 is directly connected, Serial1/2
O IA 172.16.0.0/22 [110/65] via 172.16.6.3, 00:10:53, Serial1/2
C 192.168.5.0/24 is directly connected, FastEthernet0/0
O*E2 0.0.0.0/0 [110/1] via 172.16.6.3, 00:10:53, Serial1/2
D 192.168.0.0/22 [90/156160] via 192.168.5.5, 00:15:07, FastEthernet0/0
R2#
R3#show ip route
Gateway of last resort is 202.83.131.2 to network 0.0.0.0
3.0.0.0/24 is subnetted, 1 subnets
C 3.3.3.0 is directly connected, Loopback0
172.16.0.0/16 is variably subnetted, 8 subnets, 2 masks
O IA 172.16.4.0/24 [110/129] via 172.16.6.2, 00:06:52, Serial1/2
O IA 172.16.5.0/24 [110/128] via 172.16.6.2, 00:06:52, Serial1/2
C 172.16.6.0/24 is directly connected, Serial1/2
O 172.16.0.0/22 is a summary, 00:06:52, Null0
C 172.16.0.0/24 is directly connected, FastEthernet0/0
O 172.16.1.0/24 [110/2] via 172.16.0.4, 00:06:52, FastEthernet0/0
O 172.16.2.0/24 [110/2] via 172.16.0.4, 00:06:52, FastEthernet0/0
O 172.16.3.0/24 [110/2] via 172.16.0.4, 00:06:52, FastEthernet0/0
O E2 192.168.5.0/24 [110/20] via 172.16.6.2, 00:06:52, Serial1/2
202.83.131.0/30 is subnetted, 1 subnets
C 202.83.131.0 is directly connected, Serial1/3
S* 0.0.0.0/0 [1/0] via 202.83.131.2
O E2 192.168.0.0/22 [110/20] via 172.16.6.2, 00:06:53, Serial1/2
R3#
R4# show ip route
Gateway of last resort is 172.16.0.3 to network 0.0.0.0
4.0.0.0/24 is subnetted, 1 subnets
C 4.4.4.0 is directly connected, Loopback0
172.16.0.0/24 is subnetted, 7 subnets
O IA 172.16.4.0 [110/130] via 172.16.0.3, 00:07:01, FastEthernet0/0
O IA 172.16.5.0 [110/129] via 172.16.0.3, 00:07:01, FastEthernet0/0
O IA 172.16.6.0 [110/65] via 172.16.0.3, 00:07:01, FastEthernet0/0
C 172.16.0.0 is directly connected, FastEthernet0/0
C 172.16.1.0 is directly connected, Loopback1
C 172.16.2.0 is directly connected, Loopback2
C 172.16.3.0 is directly connected, Loopback3
O E2 192.168.5.0/24 [110/20] via 172.16.0.3, 00:07:01, FastEthernet0/0
O*E2 0.0.0.0/0 [110/1] via 172.16.0.3, 00:07:01, FastEthernet0/0
O E2 192.168.0.0/22 [110/20] via 172.16.0.3, 00:07:01, FastEthernet0/0
R5# show ip route
R5 EIGRP网络的路由表,可以看到OSPF传入的路由
Gateway of last resort is 192.168.5.2 to network 0.0.0.0
172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks
D EX 172.16.4.0/24 [170/284160] via 192.168.5.2, 00:10:56, FastEthernet0/0
D EX 172.16.5.0/24 [170/284160] via 192.168.5.2, 00:11:52, FastEthernet0/0
D EX 172.16.6.0/24 [170/284160] via 192.168.5.2, 00:11:52, FastEthernet0/0
D EX 172.16.0.0/22 [170/284160] via 192.168.5.2, 00:10:56, FastEthernet0/0
C 192.168.5.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Loopback1
C 192.168.2.0/24 is directly connected, Loopback2
C 192.168.3.0/24 is directly connected, Loopback3
D*EX 0.0.0.0/0 [170/284160] via 192.168.5.2, 00:07:07, FastEthernet0/0
D 192.168.0.0/22 is a summary, 00:13:15, Null0
R6# show ip route
这是外网的路由表
Gateway of last resort is not set
202.6.6.0/30 is subnetted, 1 subnets
C 202.6.6.4 is directly connected, Loopback0
202.83.131.0/24 is variably subnetted, 2 subnets, 2 masks
S 202.83.131.0/24 is directly connected, Serial1/2
C 202.83.131.0/30 is directly connected, Serial1/2
R6#
R6#
再放一幅图，下面是做测试时用的，也方便大家了解整个网络的拓扑。
4. 测试EIGRP网络和OSPF网络的连通性 (R1与R5) , (R4与R5) , ( R1与R4)
(R1与R5)
R1#ping 192.168.1.1 source 172.16.4.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
Packet sent with a source address of 172.16.4.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/36/68 ms
R5#ping 172.16.4.1 source 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.4.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.1.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/26/48 ms
(R4与R5)
R4#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/52/64 ms
杯剧，没有截到图。
( R1与R4)
R1#ping 172.16.1.1 source 172.16.4.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
Packet sent with a source address of 172.16.4.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/46/80 ms
R1#
啊呀，我又没有在R4测试到。
5. 由于在R3上做NAT，实现能访问外网，测试内网和外网的连通性（R1到R6）,(R4到R6), (R5到R6),(R3上的NAT转换)，（debug nat trans信息）
（R1到R6）内网可以与外网通信了，这次有R4的测试了。
R1#ping 202.6.6.6 source 172.16.4.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.6.6.6, timeout is 2 seconds:
Packet sent with a source address of 172.16.4.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/60/84 ms
(R4到R6)
R4#ping 202.6.6.6
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.6.6.6, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/30/40 ms
(
R5到R6)
R5#ping 202.83.131.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.83.131.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/71/112 ms
R5#
(R3上的NAT转换)
R3#show ip nat t
R3#show ip nat translations
可以清楚地看到每条转换记录
Pro Inside global Inside local Outside local Outside global
icmp 202.83.131.1:3456 172.16.0.4:3456 202.6.6.6:3456 202.6.6.6:3456
icmp 202.83.131.1:3457 172.16.0.4:3457 202.6.6.6:3457 202.6.6.6:3457
icmp 202.83.131.1:3458 172.16.0.4:3458 202.6.6.6:3458 202.6.6.6:3458
icmp 202.83.131.1:3459 172.16.0.4:3459 202.6.6.6:3459 202.6.6.6:3459
icmp 202.83.131.1:3460 172.16.0.4:3460 202.6.6.6:3460 202.6.6.6:3460
icmp 202.83.131.1:0 192.168.5.5:0 202.83.131.2:0 202.83.131.2:0
icmp 202.83.131.1:5272 172.16.0.4:5272 202.6.6.6:5272 202.6.6.6:5272
icmp 202.83.131.1:5273 172.16.0.4:5273 202.6.6.6:5273 202.6.6.6:5273
icmp 202.83.131.1:5274 172.16.0.4:5274 202.6.6.6:5274 202.6.6.6:5274
icmp 202.83.131.1:5275 172.16.0.4:5275 202.6.6.6:5275 202.6.6.6:5275
icmp 202.83.131.1:5276 172.16.0.4:5276 202.6.6.6:5276 202.6.6.6:5276
icmp 202.83.131.1:572 172.16.0.4:572 202.83.131.2:572 202.83.131.2:572
icmp 202.83.131.1:573 172.16.0.4:573 202.83.131.2:573 202.83.131.2:573
icmp 202.83.131.1:574 172.16.0.4:574 202.83.131.2:574 202.83.131.2:574
icmp 202.83.131.1:575 172.16.0.4:575 202.83.131.2:575 202.83.131.2:575
icmp 202.83.131.1:576 172.16.0.4:576 202.83.131.2:576 202.83.131.2:576
R3#
（debug nat trans信息）这是在R3上show debug nat的信息
01:15:09: NAT: s=172.16.6.2->202.83.131.1, d=202.6.6.6 [19]
01:15:09: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.6.2 [19]
01:15:09: NAT*: s=172.16.6.2->202.83.131.1, d=202.6.6.6 [20]
01:15:09: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.6.2 [20]
01:15:09: NAT*: s=172.16.6.2->202.83.131.1, d=202.6.6.6 [21]
01:15:09: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.6.2 [21]
01:15:09: NAT*: s=172.16.6.2->202.83.131.1, d=202.6.6.6 [22]
01:15:09: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.6.2 [22]
01:15:09: NAT*: s=172.16.6.2->202.83.131.1, d=202.6.6.6 [23]
01:15:09: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.6.2 [23]
R3#
01:15:29: NAT: s=172.16.5.1->202.83.131.1, d=202.6.6.6 [35]
01:15:29: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.5.1 [35]
01:15:29: NAT*: s=172.16.5.1->202.83.131.1, d=202.6.6.6 [36]
01:15:29: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.5.1 [36]
01:15:29: NAT*: s=172.16.5.1->202.83.131.1, d=202.6.6.6 [37]
01:15:29: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.5.1 [37]
01:15:29: NAT*: s=172.16.5.1->202.83.131.1, d=202.6.6.6 [38]
01:15:29: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.5.1 [38]
01:15:30: NAT*: s=172.16.5.1->202.83.131.1, d=202.6.6.6 [39]
01:15:30: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.5.1 [39]
R3#
01:15:49: NAT: s=172.16.4.1->202.83.131.1, d=202.6.6.6 [40]
01:15:49: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.4.1 [40]
01:15:49: NAT*: s=172.16.4.1->202.83.131.1, d=202.6.6.6 [41]
01:15:49: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.4.1 [41]
01:15:49: NAT*: s=172.16.4.1->202.83.131.1, d=202.6.6.6 [42]
01:15:49: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.4.1 [42]
01:15:49: NAT*: s=172.16.4.1->202.83.131.1, d=202.6.6.6 [43]
01:15:49: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.4.1 [43]
01:15:49: NAT*: s=172.16.4.1->202.83.131.1, d=202.6.6.6 [44]
01:15:49: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.4.1 [44]
R3#
01:16:09: NAT: expiring 202.83.131.1 (172.16.6.2) icmp 4 (4)
01:16:10: NAT: s=192.168.5.5->202.83.131.1, d=202.83.131.2 [0]
01:16:10: NAT*: s=202.83.131.2, d=202.83.131.1->192.168.5.5 [0]
R3#
01:16:10: NAT*: s=192.168.5.5->202.83.131.1, d=202.83.131.2 [1]
01:16:10: NAT*: s=202.83.131.2, d=202.83.131.1->192.168.5.5 [1]
01:16:10: NAT*: s=192.168.5.5->202.83.131.1, d=202.83.131.2 [2]
01:16:10: NAT*: s=202.83.131.2, d=202.83.131.1->192.168.5.5 [2]
01:16:10: NAT*: s=192.168.5.5->202.83.131.1, d=202.83.131.2 [3]
01:16:10: NAT*: s=202.83.131.2, d=202.83.131.1->192.168.5.5 [3]
01:16:10: NAT*: s=192.168.5.5->202.83.131.1, d=202.83.131.2 [4]
01:16:10: NAT*: s=202.83.131.2, d=202.83.131.1->192.168.5.5 [4]
R3#
01:16:22: NAT: s=172.16.0.4->202.83.131.1, d=202.6.6.6 [25]
01:16:22: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.0.4 [25]
01:16:22: NAT: s=172.16.0.4->202.83.131.1, d=202.6.6.6 [26]
01:16:22: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.0.4 [26]
01:16:22: NAT: s=172.16.0.4->202.83.131.1, d=202.6.6.6 [27]
01:16:22: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.0.4 [27]
01:16:22: NAT: s=172.16.0.4->202.83.131.1, d=202.6.6.6 [28]
01:16:22: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.0.4 [28]
01:16:22: NAT: s=172.16.0.4->202.83.131.1, d=202.6.6.6 [29]
01:16:22: NAT*: s=202.6.6.6, d=202.83.131.1->172.16.0.4 [29]