Advantech EKI-9228G-8CMI, User Manual

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EKI-9228G Series User Manual 164
To access this page, click Switching > IPv6 DHCP Snooping > Base > Statistics.
Figure 4.174 Switching > IPv6 DHCP Snooping > Base > Statistics
The following table describes the items in the previous figure.
4.4.4 DVLAN
DVLAN Tunneling allows the use of a second tag on network traffic. The additional
tag helps differentiate between customers in the Metropolitan Area Networks (MAN)
while preserving individual customer's VLAN identification when they enter their own
802.1Q domain.
With the introduction of this second tag, you do not need to divide the 4k VLAN ID
space to send traffic on an Ethernet-based MAN.
With DVLAN Tunneling enabled, every frame that is transmitted from an interface
has a new VLAN tag (S-tag) attached while every packet that is received from an
interface has a VLAN tag (S-tag) removed (if one or more tags are present).
DVLAN also supports up to 4 Tag Protocol Identifier (TPID) values per switch and the
ability to map these values to ports. This allows you to configure the same or different
TPIDs for different ports.
4.4.4.1 Configuration
The DVLAN Configuration page allows you to configure the Tag Protocol Identifier
(TPID) to include in frames transmitted by interfaces that are enabled for double
VLAN (DVLAN) tagging. DVLAN tagging allows the device to add a second (outer)
VLAN tag to the frame while preserving the original (inner) VLAN tagging information.
Item Description
Interface The interface associated with the rest of the data in the row.
MAC Verify Failures The number of DHCPv6 messages that were dropped because the
source MAC address and client hardware address did not match. MAC
address verification is performed only if it is globally enabled.
Client Ifc Mismatch The number of packets that were dropped by IPv6 DHCP snooping
because the interface and VLAN on which the packet was received
does not match the client's interface and VLAN information stored in
the binding database.
DHCP Server Msgs
Received The number of DHCPv6 server messages (ADVERTISE, REPLY,
RECONFIGURE, RELAY-REPL) that have been dropped on an
untrusted port.
Refresh Click Refresh to update the screen.
Clear Counters Click Clear Counters to reset all counters to zero.