Option 37 - H3C SR8800-F Configuration Manual

Figure 54 Option 18 format
Figure 54 shows the Option 18 format, which includes the following fields:
•
Option code—Option code. The value is 18.
•
Option length—Size of the option data.
•
Port index—Port that receives the DHCPv6 request from the client.
•
VLAN ID—ID of the outer VLAN.
•
Second VLAN ID—ID of the inner VLAN. This field is optional. If the received DHCPv6 request
does not contain a second VLAN, Option 18 also does not contain it.
•
DUID—DUID of the DHCPv6 client.

Option 37

Option 37, also called the remote-ID option, is used to identify the client.
The DHCPv6 snooping device adds Option 37 to the received DHCPv6 request message before
forwarding it to the DHCPv6 server. This option provides client information about address allocation.
Figure 55 Option 37 format
Figure 55 shows the Option 37 format, which includes the following fields:
•
Option code—Option code. The value is 37.
•
Option length—Size of the option data.
•
Enterprise number—Enterprise number.
•
Port index—Port that receives the DHCPv6 request from the client.
•
VLAN ID—ID of the outer VLAN.
•
Second VLAN ID—ID of the inner VLAN. This field is optional. If the received DHCPv6 request
does not contain a second VLAN, Option 37 also does not contain it.
•
DUID—DUID of the DHCPv6 client.
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