Optional) Appending The Option 18 Field Or The Option 37 Field To Dhcpv6 Request Messages; Checking The Configuration - Huawei Quidway S2700 Series Configuration Manual

Quidway S2700 Series Ethernet Switches
Configuration Guide - Security
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3.5.6 (Optional) Appending the Option 18 Field or the Option 37
Field to DHCPv6 Request Messages
If the DHCPv6 server needs to obtain information about the interface or MAC address of the
client, the S2700 can append the Option 18 or Option 37 field to DHCPv6 Request messages
sent from a client to the DHCPv6 server.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
dhcpv6 { option18 | option37 } insert enable
The S2700 is configured to append the Option 18 field or the Option 37 field to DHCPv6 Request
messages.
The Option 18 field contains information about the interface of the client and the Option 37 field
contains information about the MAC address of the client.
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3.5.7 Checking the Configuration

Checking the Configuration of Preventing the Attacker from Sending Bogus DHCP Messages
for Extending IP Address Leases.
Prerequisite
The configurations of preventing the attacker from sending bogus DHCP messages for extending
IP address leases are complete.
Procedure
l
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Issue 01 (2011-07-15)
The format of the Option 82 field is set.
NOTE
If the customized format of the Option 82 field is used (that is, user-defined is specified), it is
recommended that you specify the interface type, slot ID, and interface number in text.
Run the display dhcp snooping global command to check information about global DHCP
snooping.
Run the display dhcp snooping interface interface-type interface-number command to
check information about DHCP snooping on the interface.
Run the display dhcp { snooping | static } user-bind { dai-status | interface interface-
type interface-number | ip-address ip-address | ipsg-status | mac-address mac-address |
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