HP 2610-PWR - Manual (Page 299)

IP Routing Features
Configuring DHCP Relay
■ Relay agents without Option 82 can exist in the path between Option
82 relay agents and an Option 82 server. The agents without Option
82 will forward client requests and server responses without any
effect on Option 82 fields in the packets.
■ If the routing switch is not able to add an Option 82 field to a client’s
DHCP request due to the message size exceeding the MTU (Maximum
Transmission Unit) size, then the request is forwarded to the DHCP
server without Option 82 information and an error message is logged
in the switch’s Event Log.
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