QTECH QSW-3400 Инструкция по настройке - Manual (Page 460)

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Chapter 67 dying gasp Configuration
67.1 Introduction to dying gasp
dying gasp is power failure alarm function. It means that at the case of power failure, the
switch can also send information through the ethernet ports to notice the other switch that it is
power failure.
dying gasp is enabled as default, but it could run normally with the snmp management function.
So the layer 3 interface should be configured on switch and make it connect to snmp
management server. snmp trap should be configured orderly.
67.2 dying gasp Typical Examples
The dying gasp function of the switch is enabled as default, but it could run normally with the
snmp management function.
Below is the configuration steps:
Switch(config)#snmp-server enable
Switch(config)#snmp-server securityip X.X.X.X
Switch(config)#snmp-server host X.X.X.X v2c switch
Switch(config)#snmp-server enable traps
Switch(config)#interface vlan N
Switch(config-if-vlanN)ip address Y.Y.Y.Y 255.255.255.0
67.3 dying gasp Troubleshooting
If there is something wrong when configuring dying gasp function, please check out if it is
because of the following reasons:

Make sure the layer 3 interface has been configured and connected to snmp server.

Make sure the address of snmp server. More than one snmp server address can be
configured on switch, but dying gasp trap packets will be sent to the first configured
server when it is power failure.