关于基于Double SVTI的IPSec VPN诡异问题,求解!!!
实验拓扑:
实验步骤:
a. 配置分支站点: 配置IPSec VPN: R1(config)#crypto isakmp policy 10 R1(config-isakmp)#encryption 3des R1(config-isakmp)#authentication pre-share R1(config-isakmp)#group 2 R1(config-isakmp)#hash md5 R1(config-isakmp)#ex R1(config)#crypto isakmp key cisco address 23.1.1.3 R1(config)#crypto isakmp key cisco address 24.1.1.4 R1(config)#crypto ipsec transform-set cisco esp-3des esp-md5-hmac R1(cfg-crypto-trans)#ex R1(config)#crypto ipsec profile pro R1(ipsec-profile)#set transform-set cisco R1(ipsec-profile)#ex 配置双SVTI隧道: R1(config)#interface tunnel 0 R1(config-if)#ip add 13.1.1.1 255.255.255.0 R1(config-if)#tunnel source 12.1.1.1 R1(config-if)#tunnel destination 23.1.1.3 R1(config-if)#tunnel mode ipsec ipv4 R1(config-if)#tunnel protection ipsec profile pro R1(config-if)#ex R1(config)#interface tunnel 1 R1(config-if)#ip add 13. R1(config-if)#ip add 14.1.1.1 255.255.255.0 R1(config-if)#tunnel source 12.1.1.1 R1(config-if)#tunnel destination 24.1.1.4 R1(config-if)#tunnel mode ipsec ipv4 R1(config-if)#tunnel protection ipsec profile pro R1(config-if)#no shut R1(config-if)#ex R1(config)# 配置EIGRP: R1(config)#router eigrp 1 R1(config-router)#no auto-summary R1(config-router)#eigrp router-id 1.1.1.1 R1(config-router)#network 1.1.1.1 0.0.0.0 R1(config-router)#network 13.1.1.1 0.0.0.0 R1(config-router)#network 14.1.1.1 0.0.0.0 R1(config-router)#ex R1(config)# b. 配置中心站点Primary路由器: 配置IPSec VPN: R3(config)#crypto isakmp policy 10 R3(config-isakmp)#encryption 3des R3(config-isakmp)#authentication pre-share R3(config-isakmp)#group 2 R3(config-isakmp)#hash md5 R3(config-isakmp)#ex R3(config)#crypto isakmp key cisco address 12.1.1.1 R3(config)#crypto ipsec transform-set cisco esp-3des esp-md5-hmac R3(cfg-crypto-trans)#ex R3(config)#crypto ipsec profile pro R3(ipsec-profile)#set transform-set cisco R3(ipsec-profile)#ex R3(config)# 配置SVTI隧道: R3(config)#interface tunnel 0 R3(config-if)#ip add 13.1.1.3 255.255.255.0 R3(config-if)#tunnel source 23.1.1.3 R3(config-if)#tunnel destination 12.1.1.1 R3(config-if)#tunnel mode ipsec ipv4 R3(config-if)#tunnel protection ipsec profile pro R3(config-if)#no shut R3(config-if)#ex R3(config)# 配置EIGRP: R3(config)#router eigrp 1 R3(config-router)#no auto-summary R3(config-router)#eigrp router-id 3.3.3.3 R3(config-router)#network 192.168.34.0 0.0.0.255 R3(config-router)#network 13.1.1.3 0.0.0.0 R3(config-router)#ex R3(config)# c. 配置中心站点Secondary路由器: 配置IPSec VPN: R4(config)#crypto isakmp policy 10 R4(config-isakmp)#authentication pre-share R4(config-isakmp)#encryption 3des R4(config-isakmp)#group 2 R4(config-isakmp)#hash md5 R4(config-isakmp)#ex R4(config)#crypto isakmp key cisco address 12.1.1.1 R4(config)#crypto ipsec transform-set cisco esp-3des esp-md5-hmac R4(cfg-crypto-trans)#ex R4(config)#crypto ipsec profile pro R4(ipsec-profile)#set transform-set cisco R4(ipsec-profile)#ex R4(config)# 配置SVTI隧道: R4(config)#interface tunnel 0 R4(config-if)#ip add 14.1.1.4 255.255.255.0 R4(config-if)#tunnel source 24.1.1.4 R4(config-if)#tunnel destination 12.1.1.1 R4(config-if)#tunnel mode ipsec ipv4 R4(config-if)#tunnel protection ipsec profile pro R4(config-if)#no shut R4(config-if)#ex R4(config)# 配置EIGRP: R4(config)#router eigrp 1 R4(config-router)#no auto-summary R4(config-router)#eigrp router-id 4.4.4.4 R4(config-router)#network 192.168.34.0 0.0.0.255 R4(config-router)#network 14.1.1.4 0.0.0.0 R4(config-router)#ex R4(config)# d. 配置Server(R5): 配置EIGRP: R5(config)#router eigrp 1 R5(config-router)#no auto-summary R5(config-router)#eigrp router-id 5.5.5.5 R5(config-router)#network 5.5.5.5 0.0.0.0 R5(config-router)#network 192.168.34.0 0.0.0.255 R5(config-router)#ex R5# 配置完成后诡异的事情出现了,R1,R5都有各自的路由,但是R1 Ping R5时,R5收到ICMP Request后,却无法将ICMP Reply发送出去: R1路由表:
R3路由表:
R4路由表:
R5路由表:
R1 Ping R5:
R5收到ICMP包后:
R4、R3没有收到任何ICMP包: 求解!!!!!!
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