Chapter 28 ARP Inspection
GS2220 Series User’s Guide
286
28.10 IPv6 DHC P Trust Se tup
Use this screen to specify which ports are trusted for DHCPv6 snooping. To open this screen, click
Adva nc e d Applic a tio n > IP So urc e G ua rd > IPv6 DHC P Trust Se tup.
Note: DHCPv6 solicit packets are sent from a DHCPv6 client to a DHCPv6 server. Reply
packets from a DHCPv6 server connected to an untrusted port are discarded.
Use port * to have all ports be Untruste d or Truste d.
Fig ure 216 Advanced Application > IP Source Guard > IPv6 DHCP Trust Setup
The following table describes the labels in this screen.
Table 138 Advanced Application > IP Source Guard > IPv6 DHCP Trust Setup
LABEL DESCRIPTIO N
Trust Setting
Active Select this to specify whether ports are trusted or untrusted ports for DHCP snooping. If you do
not select this then IPv6 DHC P Trust is not used and all ports are automatically trusted.
Port Setting
Port This field displays the port number.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to set
the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Trusted State Select whether this port is a trusted port (Truste d) or an untrusted port (Untruste d).
Trusted ports are connected to DHCPv6 servers or other switches.
Untrusted ports are connected to subscribers, and the Switch discards DHCPv6 packets from
untrusted ports in the following situations:
• The packet is a DHCPv6 server packet (for example, ADVERTISE, REPLY, or RELAY-REPLY).
• The source MAC address and source IP address in the packet do not match any of the
current bindings.
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