ipsec多分支互访+分支自动触发隧道建立
1、组网
2、需求
建立ipsec vpn实现各分支和总部之间互通，并且各分支之间也能通过总部访问。总部是固定ip建立ipsec vpn实现各分支和总部之间互通，并且各分支之间也能通过总部访问。总部是固定ip地址，分支IP地址不固定，并且分支A、B处无人值守且分支无主动自动访问总部的业务运行，所以为了防止分支设备断电重启后无法主动建立隧道，需要通过NQA。
3、关键配置
总部：
#
interface GigabitEthernet0/0
port link-mode route
combo enable copper
ip address 1.1.1.2 255.255.255.252
nat outbound 3002
ipsec apply policy test
#
ip route-static 0.0.0.0 0 1.1.1.1
#
acl advanced 3000
description toBranchA
rule 0 permit ip source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
rule 5 permit ip source 192.168.3.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
#
acl advanced 3001
description toBranchB
rule 0 permit ip source 192.168.1.0 0.0.0.255 destination 192.168.3.0 0.0.0.255
rule 5 permit ip source 192.168.2.0 0.0.0.255 destination 192.168.3.0 0.0.0.255
#
acl advanced 3002
description outboundNATDenyFlow
rule 0 deny ip source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
rule 5 deny ip source 192.168.3.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
rule 10 deny ip source 192.168.1.0 0.0.0.255 destination 192.168.3.0 0.0.0.255
rule 15 deny ip source 192.168.2.0 0.0.0.255 destination 192.168.3.0 0.0.0.255
rule 100 permit ip
#
ipsec transform-set 1
esp encryption-algorithm 3des-cbc
esp authentication-algorithm md5
#
ipsec policy-template branchA 1
transform-set 1
security acl 3000
ike-profile branchA
#
ipsec policy-template branchB 1
transform-set 1
security acl 3001
ike-profile branchB
#
ipsec policy test 1 isakmp template branchA
#
ipsec policy test 2 isakmp template branchB
#
ike dpd interval 10 on-deman
#
ike profile branchA
keychain branchA
exchange-mode aggressive
local-identity fqdn headquarters
match remote identity fqdn branchA
#
ike profile branchB
keychain branchB
exchange-mode aggressive
local-identity fqdn headquarters
match remote identity fqdn branchB
#
ike proposal 1
encryption-algorithm 3des-cbc
authentication-algorithm md5
#
ike keychain branchA
match local address 1.1.1.2
pre-shared-key hostname branchA key cipher $c$3$nng95cm/zlG3ghvIRim5saZ3bMEhoJD+Ow==
#
ike keychain branchB
match local address 1.1.1.2
pre-shared-key hostname branchB key cipher $c$3$Rl2okdkTYNBEYWd32X25LOWYkYo5YCcrgw==
#
分支A：
#
nqa entry admin test
type icmp-echo
destination ip 192.168.1.1
frequency 5000
history-record enable
history-record number 10
probe count 10
probe timeout 500
source ip 192.168.2.1
#
nqa entry admin test1
type icmp-echo
destination ip 192.168.3.1
frequency 5000
history-record enable
history-record number 10
probe count 10
probe timeout 500
source ip 192.168.2.1
#
nqa schedule admin test start-time now lifetime forever
nqa schedule admin test1 start-time now lifetime forever
#
interface GigabitEthernet0/0
port link-mode route
combo enable copper
ip address 2.2.2.2 255.255.255.252
nat outbound 3001
ipsec apply policy 1
#
ip route-static 0.0.0.0 0 2.2.2.1
#
acl advanced 3000
rule 0 permit ip source 192.168.2.0 0.0.0.255 destination 192.168.1.0 0.0.0.255
rule 5 permit ip source 192.168.2.0 0.0.0.255 destination 192.168.3.0 0.0.0.255
#
acl advanced 3001
rule 0 deny ip source 192.168.2.0 0.0.0.255 destination 192.168.1.0 0.0.0.255
rule 5 deny ip source 192.168.2.0 0.0.0.255 destination 192.168.3.0 0.0.0.255
rule 100 permit ip
#
ipsec transform-set 1
esp encryption-algorithm 3des-cbc
esp authentication-algorithm md5
#
ipsec policy 1 1 isakmp
transform-set 1
security acl 3000
remote-address 1.1.1.2
ike-profile 1
#
ike dpd interval 10 on-demand
#
ike profile 1
keychain 1
exchange-mode aggressive
local-identity fqdn branchA
match remote identity fqdn headquarters
#
ike proposal 1
encryption-algorithm 3des-cbc
authentication-algorithm md5
#
ike keychain 1
pre-shared-key address 1.1.1.2 255.255.255.0 key cipher $c$3$5QlYyBFEZTju/oTPut9zgP5JNpmVleBIbA==
#
分支B：
#
nqa entry admin test
type icmp-echo
destination ip 192.168.1.1
frequency 5000
history-record enable
history-record number 10
probe count 10
probe timeout 500
source ip 192.168.3.1
#
nqa entry admin test1
type icmp-echo
destination ip 192.168.2.1
frequency 5000
history-record enable
history-record number 10
probe count 10
probe timeout 500
source ip 192.168.3.1
#
nqa schedule admin test start-time now lifetime forever
nqa schedule admin test1 start-time now lifetime forever
#
interface GigabitEthernet0/0
port link-mode route
combo enable copper
ip address 3.3.3.2 255.255.255.252
nat outbound 3001
ipsec apply policy 1
#
ip route-static 0.0.0.0 0 3.3.3.1
#
acl advanced 3000
rule 0 permit ip source 192.168.3.0 0.0.0.255 destination 192.168.1.0 0.0.0.255
rule 5 permit ip source 192.168.3.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
#
acl advanced 3001
rule 0 deny ip source 192.168.3.0 0.0.0.255 destination 192.168.1.0 0.0.0.255
rule 5 deny ip source 192.168.3.0 0.0.0.255 destination 192.168.2.0 0.0.0.255
rule 100 permit ip
#
ipsec transform-set 1
esp encryption-algorithm 3des-cbc
esp authentication-algorithm md5
#
ipsec policy 1 1 isakmp
transform-set 1
security acl 3000
remote-address 1.1.1.2
ike-profile 1
#
ike dpd interval 10 on-demand
#
ike profile 1
keychain 1
exchange-mode aggressive
local-identity fqdn branchB
match remote identity fqdn headquarters
#
ike proposal 1
encryption-algorithm 3des-cbc
authentication-algorithm md5
#
ike keychain 1
pre-shared-key address 1.1.1.2 255.255.255.0 key cipher $c$3$5QlYyBFEZTju/oTPut9zgP5JNpmVleBIbA==
#
3、测试
分支A侧可以ping通总部和分支B
分支B侧可以ping通总部和分支A
在总部侧查看ike sa 和ipsec sa
<Headquarters>dis ike sa
Connection-ID Remote Flag DOI
------------------------------------------------------------------
1 2.2.2.2 RD IPsec
2 3.3.3.2 RD IPsec
Flags:
RD--READY RL--REPLACED FD-FADING RK-REKEY
<Headquarters>dis ipsec sa
-------------------------------
Interface: GigabitEthernet0/0
-------------------------------
-----------------------------
IPsec policy: test
Sequence number: 1
Mode: Template
-----------------------------
Tunnel id: 0
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 1.1.1.2
remote address: 2.2.2.2
Flow:
sour addr: 192.168.1.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.2.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 2857585848 (0xaa534cb8)
Connection ID: 4294967296
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843148/3404
Max received sequence-number: 390
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 1462782990 (0x57304c0e)
Connection ID: 4294967298
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843148/3404
Max sent sequence-number: 390
UDP encapsulation used for NAT traversal: N
Status: Active
-----------------------------
IPsec policy: test
Sequence number: 1
Mode: Template
-----------------------------
Tunnel id: 1
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 1.1.1.2
remote address: 2.2.2.2
Flow:
sour addr: 192.168.3.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.2.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 1741076224 (0x67c6b700)
Connection ID: 4294967297
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843095/3404
Max received sequence-number: 790
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 1031673059 (0x3d7e14e3)
Connection ID: 4294967299
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843095/3404
Max sent sequence-number: 790
UDP encapsulation used for NAT traversal: N
Status: Active
-----------------------------
IPsec policy: test
Sequence number: 2
Mode: Template
-----------------------------
Tunnel id: 2
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 1.1.1.2
remote address: 3.3.3.2
Flow:
sour addr: 192.168.1.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.3.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 3005711568 (0xb32784d0)
Connection ID: 4294967300
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843148/3404
Max received sequence-number: 390
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 2370986263 (0x8d526117)
Connection ID: 4294967302
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843148/3404
Max sent sequence-number: 390
UDP encapsulation used for NAT traversal: N
Status: Active
-----------------------------
IPsec policy: test
Sequence number: 2
Mode: Template
-----------------------------
Tunnel id: 3
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 1.1.1.2
remote address: 3.3.3.2
Flow:
sour addr: 192.168.2.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.3.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 957577755 (0x39137a1b)
Connection ID: 4294967301
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843095/3404
Max received sequence-number: 790
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 2955794011 (0xb02dd65b)
Connection ID: 4294967303
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843095/3404
Max sent sequence-number: 790
UDP encapsulation used for NAT traversal: N
Status: Active
在分支A侧查看ike sa 和ipsec sa以及NQA相关信息
<branchA>dis ike sa
Connection-ID Remote Flag DOI
------------------------------------------------------------------
1 1.1.1.2 RD IPsec
Flags:
RD--READY RL--REPLACED FD-FADING RK-REKEY
<branchA>dis ipsec sa
-------------------------------
Interface: GigabitEthernet0/0
-------------------------------
-----------------------------
IPsec policy: 1
Sequence number: 1
Mode: ISAKMP
-----------------------------
Tunnel id: 1
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 2.2.2.2
remote address: 1.1.1.2
Flow:
sour addr: 192.168.2.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.3.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 1031673059 (0x3d7e14e3)
Connection ID: 4294967296
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843082/3379
Max received sequence-number: 890
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 1741076224 (0x67c6b700)
Connection ID: 4294967299
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843082/3379
Max sent sequence-number: 890
UDP encapsulation used for NAT traversal: N
Status: Active
-----------------------------
IPsec policy: 1
Sequence number: 1
Mode: ISAKMP
-----------------------------
Tunnel id: 0
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 2.2.2.2
remote address: 1.1.1.2
Flow:
sour addr: 192.168.2.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.1.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 1462782990 (0x57304c0e)
Connection ID: 4294967297
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843141/3379
Max received sequence-number: 440
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 2857585848 (0xaa534cb8)
Connection ID: 4294967298
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843141/3379
Max sent sequence-number: 440
UDP encapsulation used for NAT traversal: N
Status: Active
<branchA>dis nqa result
NQA entry (admin admin, tag test) test results:
Send operation times: 10 Receive response times: 10
Min/Max/Average round trip time: 1/2/1
Square-Sum of round trip time: 16
Last succeeded probe time: 2020-01-01 20:59:48.9
Extended results:
Packet loss ratio: 0%
Failures due to timeout: 0
Failures due to internal error: 0
Failures due to other errors: 0
NQA entry (admin admin, tag test1) test results:
Send operation times: 10 Receive response times: 10
Min/Max/Average round trip time: 2/7/2
Square-Sum of round trip time: 85
Last succeeded probe time: 2020-01-01 20:59:48.9
Extended results:
Packet loss ratio: 0%
Failures due to timeout: 0
Failures due to internal error: 0
Failures due to other errors: 0
<branchA>dis nqa statistics
NQA entry (admin admin, tag test) test statistics:
NO. : 1
Start time: 2020-01-01 20:55:03.8
Life time: 313 seconds
Send operation times: 630 Receive response times: 590
Min/Max/Average round trip time: 1/3/1
Square-Sum of round trip time: 867
Extended results:
Packet loss ratio: 6%
Failures due to timeout: 0
Failures due to internal error: 10
Failures due to other errors: 30
NQA entry (admin admin, tag test1) test statistics:
NO. : 1
Start time: 2020-01-01 20:55:03.8
Life time: 313 seconds
Send operation times: 630 Receive response times: 590
Min/Max/Average round trip time: 1/7/1
Square-Sum of round trip time: 2477
Extended results:
Packet loss ratio: 6%
Failures due to timeout: 0
Failures due to internal error: 10
Failures due to other errors: 30
<branchA>dis nqa history
NQA entry (admin admin, tag test) history records:
Index Response Status Time
650 1 Succeeded 2020-01-01 21:00:23.9
649 2 Succeeded 2020-01-01 21:00:23.9
648 1 Succeeded 2020-01-01 21:00:23.9
647 1 Succeeded 2020-01-01 21:00:23.9
646 1 Succeeded 2020-01-01 21:00:23.8
645 1 Succeeded 2020-01-01 21:00:23.8
644 1 Succeeded 2020-01-01 21:00:23.8
643 1 Succeeded 2020-01-01 21:00:23.8
642 1 Succeeded 2020-01-01 21:00:23.8
641 1 Succeeded 2020-01-01 21:00:23.8
NQA entry (admin admin, tag test1) history records:
Index Response Status Time
650 2 Succeeded 2020-01-01 21:00:23.9
649 2 Succeeded 2020-01-01 21:00:23.9
648 2 Succeeded 2020-01-01 21:00:23.9
647 2 Succeeded 2020-01-01 21:00:23.9
646 2 Succeeded 2020-01-01 21:00:23.9
645 2 Succeeded 2020-01-01 21:00:23.9
644 2 Succeeded 2020-01-01 21:00:23.9
643 3 Succeeded 2020-01-01 21:00:23.8
642 1 Succeeded 2020-01-01 21:00:23.8
641 2 Succeeded 2020-01-01 21:00:23.8
在分支B侧查看ike sa 和ipsec sa以及NQA相关信息
<branchB>dis ike sa
Connection-ID Remote Flag DOI
------------------------------------------------------------------
1 1.1.1.2 RD IPsec
Flags:
RD--READY RL--REPLACED FD-FADING RK-REKEY
<branchB>dis ipsec sa
-------------------------------
Interface: GigabitEthernet0/0
-------------------------------
-----------------------------
IPsec policy: 1
Sequence number: 1
Mode: ISAKMP
-----------------------------
Tunnel id: 1
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 3.3.3.2
remote address: 1.1.1.2
Flow:
sour addr: 192.168.3.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.2.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 2955794011 (0xb02dd65b)
Connection ID: 4294967296
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843068/3353
Max received sequence-number: 990
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 957577755 (0x39137a1b)
Connection ID: 4294967299
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843068/3353
Max sent sequence-number: 990
UDP encapsulation used for NAT traversal: N
Status: Active
-----------------------------
IPsec policy: 1
Sequence number: 1
Mode: ISAKMP
-----------------------------
Tunnel id: 0
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1444
Tunnel:
local address: 3.3.3.2
remote address: 1.1.1.2
Flow:
sour addr: 192.168.3.0/255.255.255.0 port: 0 protocol: ip
dest addr: 192.168.1.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 2370986263 (0x8d526117)
Connection ID: 4294967297
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843134/3353
Max received sequence-number: 490
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 3005711568 (0xb32784d0)
Connection ID: 4294967298
Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843134/3353
Max sent sequence-number: 490
UDP encapsulation used for NAT traversal: N
Status: Active
<branchB>dis nqa result
NQA entry (admin admin, tag test) test results:
Send operation times: 10 Receive response times: 10
Min/Max/Average round trip time: 1/2/1
Square-Sum of round trip time: 13
Last succeeded probe time: 2020-01-01 21:00:34.3
Extended results:
Packet loss ratio: 0%
Failures due to timeout: 0
Failures due to internal error: 0
Failures due to other errors: 0
NQA entry (admin admin, tag test1) test results:
Send operation times: 10 Receive response times: 10
Min/Max/Average round trip time: 1/2/1
Square-Sum of round trip time: 37
Last succeeded probe time: 2020-01-01 21:00:34.3
Extended results:
Packet loss ratio: 0%
Failures due to timeout: 0
Failures due to internal error: 0
Failures due to other errors: 0
<branchB>dis nqa statistics
NQA entry (admin admin, tag test) test statistics:
NO. : 1
Start time: 2020-01-01 20:55:09.3
Life time: 334 seconds
Send operation times: 670 Receive response times: 640
Min/Max/Average round trip time: 1/3/1
Square-Sum of round trip time: 917
Extended results:
Packet loss ratio: 4%
Failures due to timeout: 0
Failures due to internal error: 10
Failures due to other errors: 20
NQA entry (admin admin, tag test1) test statistics:
NO. : 1
Start time: 2020-01-01 20:55:09.3
Life time: 334 seconds
Send operation times: 670 Receive response times: 640
Min/Max/Average round trip time: 1/4/1
Square-Sum of round trip time: 2551
Extended results:
Packet loss ratio: 4%
Failures due to timeout: 0
Failures due to internal error: 10
Failures due to other errors: 20
<branchB>dis nqa history
NQA entry (admin admin, tag test) history records:
Index Response Status Time
690 1 Succeeded 2020-01-01 21:00:49.3
689 2 Succeeded 2020-01-01 21:00:49.3
688 1 Succeeded 2020-01-01 21:00:49.3
687 1 Succeeded 2020-01-01 21:00:49.3
686 1 Succeeded 2020-01-01 21:00:49.3
685 1 Succeeded 2020-01-01 21:00:49.3
684 1 Succeeded 2020-01-01 21:00:49.3
683 1 Succeeded 2020-01-01 21:00:49.3
682 1 Succeeded 2020-01-01 21:00:49.3
681 2 Succeeded 2020-01-01 21:00:49.3
NQA entry (admin admin, tag test1) history records:
Index Response Status Time
690 2 Succeeded 2020-01-01 21:00:49.3
689 2 Succeeded 2020-01-01 21:00:49.3
688 2 Succeeded 2020-01-01 21:00:49.3
687 2 Succeeded 2020-01-01 21:00:49.3
686 2 Succeeded 2020-01-01 21:00:49.3
685 3 Succeeded 2020-01-01 21:00:49.3
684 2 Succeeded 2020-01-01 21:00:49.3
683 1 Succeeded 2020-01-01 21:00:49.3
682 2 Succeeded 2020-01-01 21:00:49.3
681 2 Succeeded 2020-01-01 21:00:49.3
4、配置关键点
1、各分支通过NQA实现自动和总部建立好ipsec VPN隧道之后，想要实现分支间互访，还需要分支间互相访问一下，这样两个分支上才分别都有到达另外一个分支的ipsec sa，分支间才能互通。所以在两个分支上分贝配置了两个NQA，一个是自动去ping总部，还有另外一个自动去ping对应的分支。
2、为了防止总部重启，分支的无效的ipsec sa没有及时删除，从而导致总部重启之后，业务不通。需要在分支上配置DPD。
ike dpd interval 10 on-demand
实际测试只需要在两个分支上配置即可。