D-Link DGS-3612G Product Manual - Page 144

xStack

®

DGS-3600 Series Layer 3 Managed Gigabit Ethernet Switch

sec)

table as a listening node of a multicast group without the Switch receiving a node

listener report. The user may specify a time between

1

and

16711450

with a default

setting of

260

seconds.

Done Timer (1-16711450 sec)

Specifies the maximum amount of time a router can remain in the Switch after

receiving a done message from the group without receiving a node listener report.

The user may specify a time between

1

and

16711450

with a default setting of 2

seconds.

Querier State

Choose

Enabled

to enable transmitting MLD Snooping Query packets or

Disabled

to

disable. The default is

Disabled

.

Querier Router Behavior

This read-only field describes the current querier state of the Switch, whether

Querier, which will send out Multicast Listener Query Messages to links, or Non-

Querier, which will not send out Multicast Listener Query Messages.

State

Used to enable or disable MLD snooping for the specified VLAN. This field is

Disabled

by default.

Fast Done

This parameter allows the user to enable the

fast done

function. Enabled, this

function will allow members of a multicast group to leave the group immediately

when a

done

message is received by the Switch.

NOTE:

The robustness variable of the MLD snooping querier is used in creating the following

MLD message intervals:

Group Listener Interval

– The amount of time that must pass before a multicast router decides

that there are no more listeners present of a group on a network. Calculated as (robustness

variable * query interval ) + (1 * query response interval).

Querier Present Interval

– The amount of time that must pass before a multicast router

decides that there are no other querier devices present. Calculated as (robustness variable *

query interval) + (0.5 * query response interval).

Last Listener Query Count

– The amount of group-specific queries sent before the router

assumes there are no local listeners in this group. The default value is the value of the

robustness variable.

Click

Apply

to implement changes made. Click the

Show All MLD Snooping Entries

link to return to the MLD Snooping Settings

window.

MLD Router Port Settings

The following window is used to designate a port or range of ports as being connected to multicast enabled routers. When IPv6

routing control packets, such as OSPFv3 or MLD Query packets are found in an Ethernet port or specified VLAN, the Switch will

set these ports as dynamic router ports. Once set, this will ensure that all packets with a multicast router as its destination will

arrive at the multicast-enabled router, regardless of protocol. If the Router’s Aging Time expires and no routing control packets or

query packets are received by the port, that port will be removed from being a router port.

To configure these settings, click

L2 Features > MLD Snooping > MLD Router Port Settings

, as shown below:

Figure 3- 46. MLD Router Port Settings window

To configure the router ports settings for a specified VLAN, click its corresponding

Modify

button, which will produce the

following window for the user to configure.

128

Section	Page
Web-based Switch Configuration	1
Administration	1
L2 Features	1
L3 Features	1
QoS	1
ACL	1
Security	1
Monitoring	1
Switch Maintenance	1
Technical Specifications	1
Cables and Connectors	1
System Log Entries	1
Module Specs and Cable Lengths	1
Password Recovery Procedure	1
RADIUS Attributes Assignment	1
Glossary	1

D-Link DGS-3612G Product Manual - Page 144

MLD Router Port Settings, MLD Router Port Settings window

Page 144 highlights