
Industrial Managed
Ethernet Switch
User Manual
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2.10.5.1 MLD Setting
The MLD’s
Setting
webpage as shown in Figure 2.94.To configure the
MLD
on EH75XX, the users need to
configure a VLAN in the second box of the webpage called
MLD VLAN Setting
first. To configure the options under
the
MLD VLAN Setting
. First, select a VLAN ID from the drop-down list of
VLAN
. This VLAN will be configured
with the MLD snooping function. Second, the user can enable or disable MLD snooping’s
Fast Done
function by
checking the box behind this option. This function will immediately remove the membership of a multicast listener
when the switch received an MLD done message. Third, the MLD
Snooping
function can be enabled or disabled
for the selected VLAN by checking the box behind the
Snooping
option.
Figure 2.94 MLD Setting Webpage
Fourth, the user can specify the amount of time that a node on a port will no longer be considered as a multicast
listener. This is called
Node Timeout
. The default value for
Node Timeout
is 260 seconds. Fifth, the user can
specify the amount of time that a multicast group will remain in the switch after the switch receives a done message
of the multicast group without receiving a node listener report. This is called
Done Timer
. The default value for
Done Timer
is 2 seconds. Finally, clicking on the
Update
button to update the configuration of MLD on the selected
VLAN ID. The entry of the configured VLAN should be listed in the next part of the webpage.
After setting the VLAN in the step above, the user can enable the
Global MLD Snooping
option inside the
MLD
Status Setting
box. Then, click
Update
button to enable the MLD protocol on EH75XX. Note that the MLD snooping
is the key to efficient multicast traffic flow in a Layer 2 network of EH75XX managed switch.If no MLD VLAN Setting
was done on any VLAN, the user will encounter a error message as show in Figure 2.95.
Figure 2.95 Error: No vlans configured for MLD
The current VLANs with MLD setting are listed in the last part of the webpage under the
Current MLD Setting
box.
The setting is summarized as a table with all the options associated with particular VLAN ID. To remove any entry
of the MLD setting, the user can click on the
Delete
button for that particular entry.