D-Link DES-3052 Spécifications télécharger pdf (Page 94)

DES-3028 DES-3028P DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch

GVRP Settings

In the L2 Features folder, open the VLAN folder and click GVRP Settings. The GVRP Settings window, shown left, allows

you to determine whether the Switch will share its VLAN configuration information with other GARP VLAN Registration

Protocol (GVRP) enabled switches. In addition, Ingress Checking can be used to limit traffic by filtering incoming packets whose

PVID does not match the PVID of the port. Results can be seen in the table under the configuration settings, as seen below.

The following fields

Figure 7- 7. GVRP Settings window

802.1Q Port

default is to assign all p

Acc

Frame

can be set:

Parameter Description

From/To

These two fields allow you to specify the

range of ports that will be included in the

Port-based VLAN that you are creating

using the 802.1Q Port Settings window.

GVRP

The Group VLAN Registration Protocol

(GVRP) enables the port to dynamically

become a member of a VLAN. GVRP is

Disabled by default.

Ingress

Check

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 fil-

tering. Ingress Checking is Disabled by

default.

PVID

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

orts 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.

eptable

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.

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D-Link DES-3052 Spécifications Page 94

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