zabbix client:

[root@oc-yx-hdp-18-196 ~]# dmidecode -t 1

1. dmidecode 3.1
   Getting SMBIOS data from sysfs.
   SMBIOS 2.8 present.

Handle 0x0009, DMI type 1, 27 bytes
System Information
        Manufacturer: HP
        Product Name: ProLiant DL380 Gen9
        Version: Not Specified
        Serial Number: 6CU630Y2B1
        UUID: 30393137-3136-4336-5536-333059324231
        Wake-up Type: Power Switch
        SKU Number: 719061-B21
        Family: ProLiant

[root@oc-yx-hdp-18-196 ~]# hostname -i
10.174.18.196

[root@oc-yx-hdp-18-196 ~]# netstat -antup | grep zabbix
tcp        0      0 0.0.0.0:20050           0.0.0.0:*               LISTEN      2769/./zabbix_agent 
tcp6       0      0 :::20051                :::*                    LISTEN      26068/./zabbix_agen 

[root@oc-yx-hdp-18-196 ~]# ps -aux | egrep '2769|26068'
root      2769  0.0  0.0  21020   760 ?        S    Mar23   0:00 ./zabbix_agentd
root     26068  1.1  0.0 2795016 37300 ?       Sl   Mar28  48:38 ./zabbix_agent2
root     32493  0.0  0.0 112712   984 pts/0    S+   18:01   0:00 grep -E --color=auto 2769|26068

[root@oc-yx-hdp-18-196 ~]# zabbix-3.4.4/sbin/zabbix_agentd -V
zabbix_agentd (daemon) (Zabbix) 3.4.4
Revision 74338 7 November 2017, compilation time: Nov  7 2019 14:27:01

Copyright (C) 2017 Zabbix SIA
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it according to
the license. There is NO WARRANTY, to the extent permitted by law.

[root@oc-yx-hdp-18-196 ~]# zabbix-6.0.2/sbin/zabbix_agent2 -V
zabbix_agent2 (Zabbix) 6.0.2
Revision d726a4d916 14 March 2022, compilation time: Mar 16 2022 13:41:43

Copyright (C) 2022 Zabbix SIA
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it according to
the license. There is NO WARRANTY, to the extent permitted by law.
We use the library Eclipse Paho (eclipse/paho.mqtt.golang), which is
distributed under the terms of the Eclipse Distribution License 1.0 (The 3-Clause BSD License)
available at https://www.eclipse.org/org/documents/edl-v10.php

We use the library go-modbus (goburrow/modbus), which is
distributed under the terms of the 3-Clause BSD License
available at https://github.com/goburrow/modbus/blob/master/LICENSE

zabbix server:

abnormal

[root@monitor ~]# zabbix_get -s 10.174.18.196 -p 20051 -k "system.hw.chassis[model]"

[root@monitor ~]# zabbix_get -s 10.174.18.196 -p 20051 -k "system.hw.chassis[serial]"
Intel(R) Corporation
[root@monitor ~]# zabbix_get -s 10.174.18.196 -p 20051 -k "system.hw.chassis[vendor]"
ZBX_NOTSUPPORTED: Cannot obtain hardware information.

normal

[root@monitor ~]# zabbix_get -s 10.174.18.196 -p 20050 -k "system.hw.chassis[vendor]"

HP
[root@monitor ~]# zabbix_get -s 10.174.18.196 -p 20050 -k "system.hw.chassis[model]"
ProLiant DL380 Gen9
[root@monitor ~]# zabbix_get -s 10.174.18.196 -p 20050 -k "system.hw.chassis[serial]"
6CU630Y2B1

[root@monitor ~]# zabbix_get -V
zabbix_get (Zabbix) 6.0.2
Revision d726a4d916 14 March 2022, compilation time: Mar 14 2022 12:18:22

Copyright (C) 2022 Zabbix SIA
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it according to
the license. There is NO WARRANTY, to the extent permitted by law.

This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit (http://www.openssl.org/).

Compiled with OpenSSL 1.1.1g FIPS  21 Apr 2020
Running with OpenSSL 1.1.1g FIPS  21 Apr 2020