ZyXEL Communications XS3800-28 User Manual page 322

Figure 243 Advanced Application > IP Source Guard > IPv6 DHCP Trust Setup (Stacking Mode)
The following table describes the labels in this screen.
Table 141 Advanced Application > IP Source Guard > IPv6 DHCP Trust Setup
LABEL DESCRIPTION
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 DHCP Trust is not used and all ports are automatically trusted.
Port Setting
SLOT This field appears only in stacking mode. Click the drop-down list to choose the slot number of
the Switch in a stack.
Port This field displays the port number. In stacking mode, the first number represents the slot ID and
the second is the port number. Please note that the default stacking ports (the last four ports
of your Switch) cannot be configured. They are reserved for stacking only.
* 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 (Trusted) or an untrusted port (Untrusted).
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.
Chapter 27 IP Source Guard
XS3800-28 User's Guide
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