D-Link DGS-3224TGR Router Manual PDF (Setup & Configuration Guide)

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DGS-3224TGR Gigabit Ethernet Switch User’s Guide

89

To edit an existing 802.1Q VLAN, select an entry and then click the Edit button

:

Figure 6- 77.

802.1Q VLANs – Edit window

The following fields can then be set in either of the two

802.1Q Static VLAN

windows:

Parameter

Description

VLAN ID (VID)

Allows the entry of a VLAN ID in the Add window, or displays the VLAN ID of an

existing VLAN in the Modify window. VLANs can be identified by either the VID or the

VLAN name.

VLAN Name

Allows the entry of a name for the new VLAN in the Add window.

Advertising can be enabled or disabled using this pull-down menu. If advertising is

disabled, the switch does not send any GARP/GVRP messages of the VLAN.

Port

Allows an individual port to be specified as member of a VLAN.

Non-member

Allows an individual port to be specified as a non-VLAN member.

Tagged/Untagged

Allows an individual port to be specified as Tagged or Untagged. A check in the

Tagged field specifies the port as a Tagging member of the VLAN. When an untagged

packet is transmitted by the port, the packet header is changed to include the 32-bit tag

associated with the VID (VLAN Identifier – see below). When a tagged packet exits the

port, the packet header is unchanged. A check in the Untagged field specifies the port

as an Un-tagging member of the VLAN. When an untagged packet is transmitted by

the port, the packet header remains unchanged. When a tagged packet exits the port,

the tag is stripped and the packet is changed to an untagged packet.

Forbidden

Forbidden Non-Member - specifies the port as not being a member of the VLAN and

that the port is forbidden from becoming a member of the VLAN dynamically.

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DGS-3224TGR Gigabit Ethernet Switch User’s Guide

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802.1Q Port Settings

Figure 6- 78.

802.1Q Port Settings window

This window allows you to see a Port VLAN ID (PVID) number, enable or disable the ingress filtering check, and enable or

disable GVRP for individual ports.

Ingress filtering means that a receiving port will check to see if it is a member of the VLAN ID in the packet before

forwarding the packet. GARP VLAN Registration Protocol (GVRP) is a Generic Attribute Registration Protocol (GARP)

application that provides 802.1Q-compliant VLAN pruning and dynamic VLAN creation on 802.1Q ports. With GVRP, the

switch can exchange VLAN configuration information with other GVRP switches, prune unnecessary broadcast and

unknown unicast traffic, and dynamically create and manage VLANs on switches connected through 802.1Q ports. Click

Apply

to let your changes take effect.

The information on the window is described as follows:

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Parameter

Description

PVID

PVID is used to decide whether received untagged packets belong to a VLAN.

GVRP

For each corresponding port, GARP VLAN Registration Protocol can be

Enabled

,

Disabled

, or

NoChange

.

Ingress Check

Ingress filtering is used to check if the received port is a member port of the VLAN whose VID

is equal to the VID of incoming packets. The settings include

Enabled

,

Disabled

, and

NoChange

.

Link Aggregation

From the Link Aggregation directory you can access three windows for selecting the Link Aggregation Algorithm,

configuring the Link Aggregation Group, and LACP Port Settings.

Link Aggregation Algorithm

Figure 6- 79.

Link Aggregation Algorithm window

The information on the algorithm settings is described as follows:

Parameter

Description

MAC source

Indicates that the switch should examine the MAC source address.

MAC destination

Indicates that the switch should examine the MAC destination address.

MAC source dest

Indicates that the switch should examine the MAC source and destination addresses.

IP source

Indicates that the switch should examine the IP source address.

IP destination

Indicates that the switch should examine the IP destination address.

IP source dest

Indicates that the switch should examine the IP source and destination addresses.

Link Aggregation Group

Link aggregation allows several ports to be grouped together and to act as a single link. This gives a bandwidth that is a

multiple of a single link’s bandwidth.

Link aggregation is most commonly used to link a bandwidth intensive network device or devices – such as a server – to the

backbone of a network.

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The switch allows the creation of up to 32 link aggregation groups, each group consisting of up of up to eight links (ports).

The four mini-GBIC ports can only belong to a single link aggregation group. A link aggregation group may not cross an

eight-port boundary, starting with port 1 (a group may not contain ports 8 and 9, for example) and all of the ports in the

group must be members of the same VLAN.

Further, the aggregated links must all be of the same speed and should be

configured as full duplex.

Each port in an aggregation group can be configured as the Master Port of the group, and all configuration options,

including the VLAN configuration that can be applied to the Master Port, are applied to the entire link aggregation group

(except mirror, 802.1p, and traffic segmentation, which can be configured to individual ports).

Load balancing is automatically applied to the ports in the aggregated group, and a link failure within the group causes the

network traffic to be directed to the remaining links in the group.

The Spanning Tree Protocol will treat a link aggregation group as a single link, on the switch level. On the port level, the

STP will use the port parameters of the Master Port in the calculation of port cost and in determining the state of the link

aggregation group. If two redundant link aggregation groups are configured on the switch, STP will block one entire group

– in the same way STP will block a single port that has a redundant link.

Figure 6- 80.

Link Aggregation Group window

Click

New

to create a new link aggregation:

Figure 6- 81.

Link Aggregation Group – Add window

The same window is also used to edit an existing link aggregation.

The following fields can be set:

Parameter

Description

Group ID

Allows the entry of a number used to identify the link aggregation group

−

when adding

a new group. Displays the Group ID of the currently selected link aggregation group

−

when editing and existing entry.

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Type

Select from

Static

or

LACP

(Link Aggregation Control Protocol).

Master Port <

1

>

The Master port of link aggregation group.

Status <

Disabled

>

This field can be toggled between

Enabled

and

Disabled

. This is used to turn a link

aggregation group on or off. This is useful for diagnostics, to quickly isolate a

bandwidth intensive network device or to have an absolute backup link aggregation

group that is not under automatic control.

Port Member

Allows the specification of the ports that will make up the link aggregation group.

LACP Port Settings

LACP supports the automatic creation of link aggregation by exchanging LACP packets between LAN ports. LACP

packets are exchanged only between ports in passive and active modes. Both the passive and active modes allow LACP to

negotiate between LAN ports to determine if they can form a link aggregation.

•

Passive – LACP mode that places a port into a passive negotiating state, in which the port responds to LACP

packets it receives but does not initiate LACP negotiation. This is the default.

•

Active – LACP mode that places a port into an active negotiating state, in which the port initiates negotiations with

other ports by sending LACP packets.

LAN ports can form a trunk group when they are in different LACP modes as long as the modes are compatible. For

example:

•

A LAN port in active mode can form a trunk group successfully with another LAN port that is in active mode.

•

A LAN port in active mode can form a trunk group with another LAN port in passive mode.

A LAN port in passive mode cannot form a trunk with another LAN port that is also in passive mode, because neither port

will initiate negotiation.

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