Table 192: DHCP L2 Relay Interface Statistics Fields
Field
Description
Interface
The interface associated with the rest of the data in the row.
Untrusted Server Messages
With Option-82
The number of messages received on an untrusted interface from a DHCP server
that contained Option 82 data. These messages are dropped.
Untrusted Client Messages
With Option-82
The number of messages received on an untrusted interface from a DHCP client
that contained Option 82 data. These messages are dropped.
Trusted Server Messages With
Option-82
The number of messages received on a trusted interface from a DHCP server
that contained Option 82 data. These messages are forwarded.
Untrusted Client Messages
With Option-82
The number of messages received on a trusted interface from a DHCP client that
contained Option 82 data. These messages are forwarded.
Clear (Button)
To reset the statistics to zero for one or more interfaces, select each interface
with the data to reset and click Clear. You must confirm the action before the
entry is deleted.
Click
Refresh
to refresh the page with the most current data from the switch.
Configuring IPv6 DHCP Snooping
IPv6
snooping is a security feature that monitors DHCPv6 messages between a DHCPv6 client
and DHCPv6 servers to filter harmful DHCPv6 messages and to build a bindings database of {MAC
address, IPv6 address, VLAN ID, port} tuples that are considered authorized. You can enable IPv6 DHCP
snooping globally and on specific VLANs, and configure ports within the VLAN to be trusted or
untrusted. If a DHCPv6 message arrives on an untrusted port, IPv6 DHCP snooping filters messages
that are not from authorized DHCPv6 clients. DHCPv6 server messages are forwarded only through
trusted ports.
Global IPv6 DHCP Snooping Configuration
Use the Global IPv6 DCHP Snooping Configuration page to view and configure the global settings for
IPv6 DHCP Snooping.
To access this page, click
Switching
>
IPv6 DCHP Snooping
>
Base
>
Global
in the navigation menu.
Table 193: Global DHCP Snooping Configuration Fields
Field
Description
DHCP Snooping Mode
The administrative mode of IPv6 DHCP snooping on the device.
MAC Address Validation
Enables or disables the verification of the sender MAC address for IPv6 DHCP
snooping. When enabled, the device checks packets that are received on
untrusted interfaces to verify that the MAC address and the DHCPv6 client
hardware address match. If the addresses do not match, the device drops the
packet.
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.
Configuring Switching Information
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