某局点MSR3640 ADVPN隧道建立不成功的经验案例

现场组网比较规范是IPv4 Full-Mesh的组网，HUB和server是同一台设备（MSR3640），spoke是一台设备（防火墙F1000-AK135）server连接运营商专线和HUB建立ADVPN。

1.两边隧道建立不起来，HUB和spoke设备也没有注册上

2.看不到VAM Client的IPv4私网地址映射信息

1、首先检查两边设备配置，ADVPN实际上也是建立IPsec VPN隧道，检查发现配置中存在问题

（1）spoke中下面的地址 

interface Tunnel1 mode advpn gre 

   ip address 172.32.254.9 255.255.255.0 检查发现这个地址不在server设备上Hub组内Spoke的IPv4私网地址范围，正常是要在这个范围内

server中的配置

vam server advpn-domain mem id 1 

 pre-shared-key cipher $c$3$qtHxMApstPa0BpKt51BUDS5B+tFoSg== 

 server enable hub-group 0 

 hub private-address 172.32.254.10 

 spoke private-address range 172.31.254.0 172.35.254.255

（2）HUB设备上IPv4 ADVPN隧道接口Tunnel1配置错误

interface Tunnel1 mode advpn gre 

  ip address 172.32.254.10 255.255.255.0 //要和server中Hub组内的Hub IPv4私网地址一致

  ospf network-type broadcast 

  source GigabitEthernet1/4/3 

  tunnel protection ipsec profile dvpn 

  vam client mem 

（3）终端不结合服务器，在设备本地认证，这个需要HUB的用户名和SPOKE不能配置成一样的。domain域按照下面配置即可，如果是结合AAA服务器认证，就严格按照官网配置。

domain mem 

authentication advpn local none 

accounting advpn local none  

（4）OSPF中发布的配置要包含私网地址信息

ospf 2 

 area 0.0.0.0 

 network 172.32.254.0 0.0.0.255

1、按照如上检查修改配置后，HUB和SPOKE可以正常注册上线，也可以看到私网地址信息，隧道也可以正常建立。

[SERVER] display vam server address-map

ADVPN domain name: mem

Total private address mappings: 2

Group      Private address  Public address              Type   NAT  Holding time

0          172.32.254.9     124.126.16.130              Spoke  No   0H 14M 7S  

0          172.32.254.10    124.65.137.178              Hub    No   0H 15M 22S 

[SERVER]ping 172.32.254.9  （在server上ping spoke设备地址）

Ping 172.32.254.9 (172.32.254.9): 56 data bytes, press CTRL+C to break

56 bytes from 172.32.254.9: icmp_seq=0 ttl=255 time=4.575 ms

56 bytes from 172.32.254.9: icmp_seq=1 ttl=255 time=4.435 ms

56 bytes from 172.32.254.9: icmp_seq=2 ttl=255 time=4.343 ms

56 bytes from 172.32.254.9: icmp_seq=3 ttl=255 time=4.269 ms

56 bytes from 172.32.254.9: icmp_seq=4 ttl=255 time=4.288 ms

 --- Ping statistics for 172.32.254.9 ---

5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss

round-trip min/avg/max/std-dev = 4.269/4.382/4.575/0.112 ms

[SERVER]dis ipsec sa

-------------------------------

Interface: Tunnel1

------------------------------

  IPsec profile: dvpn

  Mode: ISAKMP

  -----------------------------

    Tunnel id: 0

    Encapsulation mode: transport

    Perfect forward secrecy:

    Path MTU: 1404

    Tunnel:

        local  address: 124.65.137.178

        remote address: 124.126.16.130

    Flow:

        sour addr: 124.65.137.178/255.255.255.255  port: 0  protocol: gre

        dest addr: 124.126.16.130/255.255.255.255  port: 0  protocol: gre

    [Inbound ESP SAs]

      SPI: 2965272858 (0xb0be791a)

      Connection ID: 4294967296

      Transform set: ESP-ENCRYPT-DES-CBC ESP-AUTH-SHA1

      SA duration (kilobytes/sec): 1843200/3600

      SA remaining duration (kilobytes/sec): 1843187/2244

      Max received sequence-number: 160

      Anti-replay check enable: Y

      Anti-replay window size: 64

      UDP encapsulation used for NAT traversal: N

      Status: Active

    [Outbound ESP SAs]

      SPI: 3922642703 (0xe9cec70f)

      Connection ID: 4294967297

      Transform set: ESP-ENCRYPT-DES-CBC ESP-AUTH-SHA1

      SA duration (kilobytes/sec): 1843200/3600

      SA remaining duration (kilobytes/sec): 1843186/2244

      Max sent sequence-number: 159

      UDP encapsulation used for NAT traversal: N

      Status: Active

[SERVER]dis ike sa

    Connection-ID   Local               Remote              Flag      DOI   

-------------------------------------------------------------------------

9               124.65.137.178      124.126.16.130      RD        IPsec