QTECH QSW-8300 Инструкция по настройке - Manual (Page 186)

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operate normally, the allocation of addresses will fail. When there is more than one kind of
Relay Agent, please pay attention to the retransmitting policy of the interface DHCP request
messages.
To implement the option 82 function o
f DHCP Relay Agent, the “debug dhcp relay packet”
command can be used during the operating procedure, including adding the contents of option
82, the retransmitting policy adopted, the option 82 contents of the server peeled by the Relay
Agent and etc., such information can help users to do troubleshooting.
To implement the option 82 function of DHCP server, the “debug ip dhcp server packet”
command can be used during the operating procedure to display the procedure of data
packets processing of the server, including displaying the identified option 82 information of the
request message and the option 82 information returned by the reply message.