4 Configuration
DGS-1210 series Metro Ethernet Managed Switch User Manual
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GVRP:
The Group VLAN Registration Protocol (GVRP) enables the port to dynamically become a member
of a VLAN. GVRP is
Disabled
by default.
Ingress Checking:
This field can be toggled using the space bar between Enabled and Disabled. Enabled
enables the port to compare the VID tag of an incoming packet with the PVID number assigned to the port. If
the two are different, the port filters (drops) the packet. Disabled disables ingress filtering. Ingress Checking
is
Disabled
by default.
Acceptable Frame Type:
This field denotes the type of frame that will be accepted by the port. The user
may choose between
Tagged Only
, which means only VLAN tagged frames will be accepted, and Admit_All,
which mean both tagged and untagged frames will be accepted.
Admit_All
is enabled by default.
Click Apply to make the configurations take effect.
Configuration > GVRP Timer Settings
The GVRP Timer Settings page allows user to configure the GARP timer values for application join, leave,
and leave_all GARP timer values.
Figure 4.64 - Configuration > GVRP Timer Settings
Join Time (100-100000):
Indicates the time in milliseconds that PDUs are transmitted. The default value is
200ms
.
Leave Time (100-100000):
Indicates the amount of time in milliseconds that the device waits before leaving
its GARP state. The leave time is activated by a leave all time message sent/received, and cancelled by the
Join message. The default value is
600ms
.
Leave_All Time (100-100000):
Used to confirm the port within the VLAN. The time in milliseconds between
messages sent. The default value is
10000ms
.
Click Apply to make the configurations take effect.
Configuration > QinQ > QinQ Settings
The QinQ Settings page allows user to enable or disable the Q-in-Q function. Q-in-Q is designed for service
providers to carry traffic from multiple users across a network.
Q-in-Q is used to maintain customer specific VLAN and Layer 2 protocol configurations even when the same
VLAN ID is being used by different customers. This is achieved by inserting SPVLAN tags into the
customer’s frames when they enter the service provider’s network, and then removing the tags when the
frames leave the network.
Customers of a service provider may have different or specific requirements regarding their internal VLAN
IDs and the number of VLANs that can be supported. Therefore customers in the same service provider
network may have VLAN ranges that overlap, which might cause traffic to become mixed up. So assigning a
unique range of VLAN IDs to each customer might cause restrictions on some of their configurations
requiring intense processing of VLAN mapping tables which may exceed the VLAN mapping limit. Q-in-Q
uses a single service provider VLAN (SPVLAN) for customers who have multiple VLANs. Customer’s VLAN
IDs are segregated within the service provider’s network even when they use the same customer specific
VLAN ID. Q-in-Q expands the VLAN space available while preserving the customer’s original tagged packets
and adding SPVLAN tags to each new frame. Select
Enabled
or
Disabled
then click
Apply
to enable or
disable the Q-in-Q Global Settings.
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