Airlive POE-GSH1602M handleiding
Handleiding
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DHCP Relay Supporting Mechanism of Option 82
The processes of DHCP Client acquiring IP address from DHCP Server through DHCP
relay is basically the same as that directly from DHCP Server. Steps of discovery,
provision, selection, and validation are essential. The supporting mechanism of DHCP
relay is introduced as follows:
(1) DHCP relay will check the Option 82 in the DHCPREQUEST message received
and handle it accordingly.
⚫ For existing Option 82 messages, DHCP relay will process according to the
configuration policies (discarding, replacing with relay Option 82, or maintaining
original Option 82), and then forward to DHCP Server.
⚫ For messages without Option 82, DHCP relay will add and forward the new
messages to DHCP Server.
(2) DHCP relay will peel off Option 82 from the response message received from
DHCP Server, and then forward the message with DHCP configuration info to DHCP
Client.
Description:
DHCP Client transmits a DHCPDISCOVERY message and a DHCPREQUEST
message. DHCP relay will add Option 82 to both messages due to different processing
mechanisms of DHCP Servers of manufacturers for Request message. Some devices
handle Option 82 in the DHCPDISCOVERY message, while others handle it in the
DHCPREQUEST message.
A switch configured with DHCP Snooping and Option 82 functions receives
DHCPREQUEST messages with Option 82 sent by DHCP Clients. DHCP Snooping
takes different processing mechanisms according to different configuration processing
strategies and sub-option contents.
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Productinformatie
| Merk | Airlive |
| Model | POE-GSH1602M |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 71337 MB |
