Click
Refresh
to refresh the page with the most current data from the switch.
IPv6 DHCP Snooping VLAN Configuration
Use the IPv6 DHCP Snooping VLAN Configuration page to view and configure the IPv6
settings on VLANs that exist on the device. IPv6 DHCP snooping can be configured on switching VLANs
and routing VLANs. For Layer 2 (non-routing) VLANs, IPv6 DHCP snooping forwards valid DHCPv6
client messages received on the VLANs. The message is forwarded on all trusted interfaces in the VLAN.
When a DHCPv6 packet is received on a routing VLAN, the IPv6 DHCP snooping application applies its
filtering rules and updates the bindings database. If a client message passes filtering rules, the message
is placed into the software forwarding path, where it may be processed by the DHCPv6 relay agent,
processed by the local DHCPv6 server, or forwarded as an IP packet.
To access this page, click
Switching
>
DCHP Snooping
>
Base
>
VLAN Configuration
in the navigation
menu.
Use the buttons to perform the following tasks:
•
To enable a VLAN for IPv6 DHCP snooping, click
Add
and select the VLAN to administratively
enable for IPv6 DHCP snooping. To select multiple VLANs,
[Ctrl]
+ click each VLAN to select.
•
To disable IPv6 DHCP snooping on one or more VLANs, select each entry to delete and click
Remove
. You must confirm the action before the entry is deleted.
Table 194: IPv6 DHCP Snooping VLAN Configuration Fields
Field
Description
VLAN ID
The VLAN ID that is enabled for IPv6 DHCP snooping. In the Add IPv6 DHCP
Snooping VLAN Configuration window, this field lists the VLAN ID of all VLANs
that exist on the device.
DHCP Snooping Mode
The current administration mode of IPv6 DHCP snooping for the VLAN. Only
VLANs that are enabled for IPv6 DHCP snooping appear in the list.
If you change any of the parameters, click
Submit
to apply the changes to the system. If you want the
switch to retain the new values across a power cycle, you must save the configuration.
Click
Refresh
to refresh the page with the most current data from the switch.
IPv6 DHCP Snooping Interface Configuration
Use the IPv6 DHCP Snooping Interface Configuration page to view and configure the IPv6
snooping settings for each interface. The IPv6 DHCP snooping feature processes incoming DHCPv6
messages.
For RELEASE and DECLINE messages, the feature compares the receive interface and VLAN with the
client's interface and VLAN in the binding database. If the interfaces do not match, the application logs
the event (when logging of invalid packets is enabled) and drops the message. If MAC address
validation is globally enabled, messages that pass the initial validation are checked to verify that the
source MAC address and the DHCPv6 client hardware address match. Where there is a mismatch, IPv6
DHCP snooping logs the event (when logging of invalid packets is enabled) and drops the packet. To
Configuring Switching Information
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