User manual

4 Configuration DES-1210 Metro Ethernet Managed Switch User Manual
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Figure 4.51 - Configuration > GVRP Settings
From Port/To Port: These two fields allow user to specify the range of ports that will be included in the Port-
based VLAN that user is creating using the 802.1Q Port Settings page.
PVID (1-4094): The read-only field in the 802.1Q Port Table shows the current PVID assignment for each
port, which may be manually assigned to a VLAN when created in the Settings table. The Switch's default is
to assign all ports to the default VLAN with a VID of 1. The PVID is used by the port to tag outgoing,
untagged packets, and to make filtering decisions about incoming packets. If the port is specified to accept
only tagged frames - as tagging, and an untagged packet is forwarded to the port for transmission, the port
will add an 802.1Q tag using the PVID to write the VID in the tag. When the packet arrives at its destination,
the receiving device will use the PVID to make VLAN forwarding decisions. If the port receives a packet, and
Ingress filtering is enabled, the port will compare the VID of the incoming packet to its PVID. If the two are
unequal, the port will drop the packet. If the two are equal, the port will receive the packet.
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 implement changes made.
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 4.52 - 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.