The lldpNotificationInterval object cannot be set on the NMS for S series switches


For Huawei S series switches (except the S1700), configuration of the lldpNotificationInterval object does not take effect if LLDP is not globally enabled. Before configuring the lldpNotificationInterval object, run the lldp enable command in the system view to enable LLDP globally.
The lldpNotificationInterval object is in LLDP-MIB.mib. The root object of LLDP-MIB.mib is iso(1).std(0).iso8802(8802).ieee802dot1(1).ieee802dot1mibs(1).lldpMIB(2). The default MIB views operable to the NMS have an OID prefix The lldpNotificationInterval object is not in any operable MIB view, so the operations performed on the lldpNotificationInterval object on the NMS do not take effect.

To make operations on the lldpNotificationInterval object performed on the NMS take effect, perform the following configuration on the managed device:
[HUAWEI] snmp-agent mib-view included test iso
[HUAWEI] snmp-agent community read huawei123 mib-view test
[HUAWEI] snmp-agent community write huawei123 mib-view test
[HUAWEI]snmp-agent sys-info version all
The community name (huawei123) and MIB view name (test) in the preceding commands are used as an example. You can change them as required.

Other related questions:
What should I do if the configuration of an S series switch is lost after restart
If the configuration of an S series switch (except the S1700) is lost after restart, the possible reasons are as follows: the configuration fails to be saved or the specified startup file is incorrect. Handle the problem as follows:
1. If the configuration fails to be saved, run the following command to save the configuration:
<HUAWEI> save
The current configuration will be written to the device. Are you sure to continue?[Y/N]Y
Info: Please input the file name(*.cfg,*.zip)[]:Y
When the configuration of a new switch is saved for the first time, the system asks you to enter the name of the configuration file to which the configuration is to be saved, which is by default or a created file with name extension .zip or .cfg. If the configuration does not need to be saved to other files separately, press Enter. (Press Enter or enter the new configuration file name. Otherwise, the configuration cannot be written to the configuration file and the switch still restarts with no configuration.)
If the message Info: Save the configuration successfully. is displayed, the configuration is saved successfully. You are advised to run the display saved-configuration command to verify that the configuration is successfully written to the configuration file.
2. If the configuration file for the next startup is not specified or the name of the specified file is different from that of the saved configuration file, perform the following operations:
a. Check the configuration file.
<HUAWEI> dir /all
b. Check whether the name of the configuration file for the next startup (represented by the Next startup saved-configuration file field) is the same as that of the saved configuration file. If the field is empty or specifies another file name, run a command to specify the saved configuration file for the next startup.
<HUAWEI> display startup
c. Specify the configuration for the next startup. startup saved-configuration
3. If DHCP-related configurations are lost after DHCP is configured and saved on a new switch that is started for the first time, the possible cause is as follows:
If a switch starts without any configuration, the switch automatically starts the auto-config process. This process triggers the DHCP function for the switch to automatically obtain an IP address and the configuration file from a DHCP on the network. When DHCP is manually configured, the auto-config process is automatically disabled, so the DHCP function is also automatically disabled. Therefore, DHCP-related commands are lost after the DHCP configuration is saved.

Which MIB objects describe optical module information on S series switch and what are their OIDs
On S series switches (except S1700), all optical module information is described in hwOpticalModuleInfoTable. The OID prefix of this table is

Can S series switches automatically set up a stack
Newly delivered S series fixed switches can automatically set up a stack in stack connection mode after stack cards are correctly installed and stack cables are correctly connected. If service ports are used to set up a stack, you need to configure the service ports as stack ports and correctly connect stack cables. Then the switches will automatically set up a stack. If the switches to set up a stack are not newly delivered, you need to check the stack configurations on the switches. If not, they may fail to set up a stack. In addition, stack establishment has requirements on hardware. After stack configurations on switches are completed, the stack may fail to be set up or some member switches may fail to join the stack. Possible causes are as follows: 1. Switches of different models cannot set up a stack. 2. A switch does not support stacking. 3. A switch or stack card has no electronic label or an incorrect electronic label. 4. Stack ports are incorrectly connected. 5. Some stack cards or stack cables are faulty. 6. The stack reserved VLAN is occupied. 7. MAC addresses of stack member switches conflict.

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