msr2630xs L2TP服务器 inode 连接无效，是什么原因？
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问题描述：
开启了服务
建立了虚拟网关
虚拟ip
创建了vpn账号
用inode进行拨号时，出现下面的现象
，
inode 配置好了服务器地址 用户名与密码后，进行连接
发现msr上面的隧道信息是有数据的，但是过了一段时间后，显示失败
用户名与密码都是对的，服务器上用的是认证方式是chap ,认证管理--用户管理里面将ppp前打勾
上面不知道是什么原因？
用inode对一台配置好L2TP的磊科路由器，进行拨号，显示是成功的
请问，这个问题在哪里？
通过网友的方法，我开启debug l2tp 后，all 显示如下，
<B34FRouter1>debug l2tp all
This command is CPU intensive and might affect ongoing services. Are you sure you want to continue? [Y/N]:y
<B34FRouter1>*May 25 13:42:39:053 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Received SCCRQ packet from port 1701 (length=75, Ns=0, Nr=0). Packet content:
c8 02 00 4b 00 00 00 00 00 00 00 00 80 08 00 00
00 00 00 01 80 08 00 00 00 02 01 00 80 09 00 00
00 07 76 70 6e 00 0c 00 00 00 08 48 75 61 57 65
69 80 0a 00 00 00 03 00 00 00 01 80 08 00 00 00
09 00 01 80 08 00 00 00 0a 00 80
*May 25 13:42:39:053 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Message-Type AVP: 1.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Protocol-Version AVP. Version=1, Revision=0.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Host-Name AVP: vpn.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Vendor-Name AVP: HuaWei.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Framing-Capabilities AVP: 1.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Assigned-Tunnel-ID AVP: 1.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
Parsed Receive-Window-Size AVP: 128.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT:
TunnelID=34837: Processed invalid SCCRQ packet in Idle state, sent StopCCN packet to the peer and deleted the local tunnel.
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Encapsulated Message-Type AVP:
80 08 00 00 00 00 00 04
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Encapsulated Assigned-Tunnel-ID AVP:
80 08 00 00 00 09 88 15
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Encapsulated Result-Code AVP:
80 51 00 00 00 01 00 02 00 03 4f 6e 65 20 6f 66
20 74 68 65 20 66 69 65 6c 64 20 76 61 6c 75 65
73 20 77 61 73 20 6f 75 74 20 6f 66 20 72 61 6e
67 65 20 6f 72 20 72 65 73 65 72 76 65 64 20 66
69 65 6c 64 20 77 61 73 20 6e 6f 6e 2d 7a 65 72
6f
*May 25 13:42:40:054 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Received ZLB-ACK packet from port 1701 (length=12, Ns=1, Nr=1). Packet content:
c8 02 00 0c 00 00 00 00 00 01 00 01
*May 25 13:42:40:054 2024 B34FRouter1 L2TPV2/7/ERROR:
Received invalid packet from port 1701, and dropped it.
*May 25 13:42:40:064 2024 B34FRouter1 L2TPV2/7/EVENT:
TunnelID=34837: Resent the packet for 1 times.
*May 25 13:42:40:072 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Received ZLB-ACK packet from port 1701 (length=12, Ns=1, Nr=1). Packet content:
c8 02 00 0c 00 00 00 00 00 01 00 01
*May 25 13:42:40:072 2024 B34FRouter1 L2TPV2/7/ERROR:
Received invalid packet from port 1701, and dropped it.
*May 25 13:42:42:064 2024 B34FRouter1 L2TPV2/7/EVENT:
TunnelID=34837: Resent the packet for 2 times.
*May 25 13:42:42:073 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Received ZLB-ACK packet from port 1701 (length=12, Ns=1, Nr=1). Packet content:
c8 02 00 0c 00 00 00 00 00 01 00 01
*May 25 13:42:42:073 2024 B34FRouter1 L2TPV2/7/ERROR:
Received invalid packet from port 1701, and dropped it.
*May 25 13:42:46:064 2024 B34FRouter1 L2TPV2/7/EVENT:
TunnelID=34837: Resent the packet for 3 times.
*May 25 13:42:46:071 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Received ZLB-ACK packet from port 1701 (length=12, Ns=1, Nr=1). Packet content:
c8 02 00 0c 00 00 00 00 00 01 00 01
*May 25 13:42:46:071 2024 B34FRouter1 L2TPV2/7/ERROR:
Received invalid packet from port 1701, and dropped it.
*May 25 13:42:54:064 2024 B34FRouter1 L2TPV2/7/EVENT:
TunnelID=34837: Resent the packet for 4 times.
*May 25 13:42:54:072 2024 B34FRouter1 L2TPV2/7/CONTROL-PKT:
Received ZLB-ACK packet from port 1701 (length=12, Ns=1, Nr=1). Packet content:
c8 02 00 0c 00 00 00 00 00 01 00 01
*May 25 13:42:54:072 2024 B34FRouter1 L2TPV2/7/ERROR:
Received invalid packet from port 1701, and dropped it.
*May 25 13:43:10:064 2024 B34FRouter1 L2TPV2/7/EVENT:
TunnelID=34837: Delay-Cleanup timer expired and deleted the local tunnel.
从上面找到下面的信息，
----------------------------------------------------------------------------------------------------------------------------------------------
*May 25 13:42:39:054 2024 B34FRouter1 L2TPV2/7/EVENT: TunnelID=34837: Processed invalid SCCRQ packet in Idle state, sent StopCCN packet to the peer and deleted the local tunnel.
----------------------------------------------------------------------------------------------------------------------------------------------
翻译过来是
在空闲（Idle）状态下，路由器（B34FRouter1）收到了一个无效的SCCRQ（Start Control Connection Request）数据包。 路由器发送了一个StopCCN（Stop Control Connection Notification）数据包给对端，并删除了本地的隧道。
----------------------------------------------------------------------------------------------------------------------------------------------
如何排查？
请高手分析一下不成功原因是什么？
**************************************
成功了！！！！！！！！！！！！！！！
原因找到了！！！！！！！！！！！！！！！！
inode 高级设置里面，这个需要改成chap
- 2024-05-25提问
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