某局点 LS-6520X-54HC-EI-GL TACACS 认证失败

无

现场进行配置割接，用华三交换机替换Huawei的交换机，发现替换后进行hwtacacs认证不成功。

对设备 debug 如下：

<ALM-ATS48-CS-LSW-2>*Feb 10 18:21:29:149 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Processing TACACS authentication.

*Feb 10 18:21:29:150 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Dispatching request, Primitive: authentication.

*Feb 10 18:21:29:150 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Creating request data, data type: START

*Feb 10 18:21:29:150 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Session successfully created.

*Feb 10 18:21:29:150 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Getting available server, server-ip=10.147.32.21, server-port=49, VPN instance=MGMT.

*Feb 10 18:21:29:151 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Connecting to server...

*Feb 10 18:21:29:151 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Reply SocketFd received EPOLLOUT event.

*Feb 10 18:21:29:152 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Connection succeeded, server-ip=10.147.32.21, port=49, VPN instance=MGMT.

*Feb 10 18:21:29:152 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Encapsulating authentication request packet.

*Feb 10 18:21:29:152 2022 ALM-ATS48-CS-LSW-2 TACACS/7/send_packet:

version: 0xc0  type: AUTHEN_REQUEST  seq_no: 1  flag: ENCRYPTED_FLAG

session-id: 0xbf6a4449

length of payload: 48

action: LOGIN  priv_lvl: 0  authen_type: ASCII  service: LOGIN

user_len: 8   port_len: 9   rem_len: 13   data_len: 10

user: daninuke

port: LoopBack1

rem_addr: 10.250.80.239

data: ******

*Feb 10 18:21:29:153 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Reply SocketFd received EPOLLIN event.

*Feb 10 18:21:29:153 2022 ALM-ATS48-CS-LSW-2 TACACS/7/ERROR: PAM_TACACS: Invalid reply packet.

*Feb 10 18:21:34:922 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Response timed out.

%Feb 10 18:21:34:924 2022 ALM-ATS48-CS-LSW-2 TACACS/4/TACACS_AUTH_SERVER_DOWN: TACACS authentication server was blocked: server IP=10.147.32.21, port=49, VPN instance=MGMT.

*Feb 10 18:21:34:923 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Getting available server, server-ip=10.147.32.22, server-port=49, VPN instance=MGMT.

*Feb 10 18:21:34:924 2022 ALM-ATS48-CS-LSW-2 TACACS/7/EVENT: PAM_TACACS: Set status of server to block successfully. serverIP: 10.147.32.21, serverPort: 49.

从debug看

日志*Feb 10 18:21:29:153 2022 ALM-ATS48-CS-LSW-2 TACACS/7/ERROR: PAM_TACACS: Invalid reply packet.代表收到的应答报文无效，一般是由于两边设备的共享密钥配置不一致导致。

现场重新检查并配置两边设备的共享密钥后成功认证