Advantech EKI-9512-C0IDW10E, Руководство пользователя

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185 EKI-9500 Series User Manual
4.4.9 IGMP Snooping Querier
4.4.9.1 Configuration
Use the IGMP Snooping Querier Configuration page to configure the global IGMP
snooping querier settings on the device. IGMP snooping requires that one central
switch or router periodically query all end-devices on the network to announce their
multicast memberships. This central device is the IGMP querier. When layer 3 IP
multicast routing protocols are enabled in a network with IP multicast routing, the IP
multicast router acts as the IGMP querier. However, if the IP- multicast traffic in a
VLAN needs to be layer 2 switched only, an IP-multicast router is not required. The
IGMP snooping querier can perform the IGMP snooping functions on the VLAN.
To access this page, click Switching > IGMP Snooping Querier > Configuration .
Figure 4.200 Switching > IGMP Snooping Querier > Configuration
The following table describes the items in the previous figure.
4.4.9.2 VLAN Configuration
Use the IGMP Snooping Querier VLAN Configuration page to enable the IGMP
snooping querier feature on one or more VLANs and to configure per-VLAN IGMP
snooping querier settings. Only VLANS that have the IGMP snooping querier feature
enabled appear in the table.
Configured VLAN
IDs The VLANs that are enabled as multicast router interfaces on the
selected port or LAG. To disable a VLAN as a multicast router inter-
face, click the VLAN ID to select it (or CTRL + click to select multiple
VLAN IDs). Then, click the appropriate arrow to move the selected
VLAN or VLANs to the VLAN IDs window.
Submit Click Submit to save the values and update the screen.
Refresh Click Refresh to update the screen.
Item Description
Item Description
Admin Mode The administrative mode for the IGMP snooping querier on the device.
When enabled, the IGMP snooping querier sends out periodic IGMP
queries that trigger IGMP report messages from the switches that want
to receive IP multicast traffic. The IGMP snooping feature listens to
these IGMP reports to establish appropriate forwarding.
IP Address The snooping querier address to be used as source address in peri-
odic IGMP queries. This address is used when no IP address is config-
ured on the VLAN on which the query is being sent.
IGMP Version The IGMP protocol version used in periodic IGMP queries.
Query Interval (Sec-
onds) The amount of time the IGMP snooping querier on the device should
wait between sending periodic IGMP queries.
Querier Expiry Inter-
val (Seconds) The amount of time the device remains in non-querier mode after it has
discovered that there is a multicast querier in the network.
Submit Click Submit to save the values and update the screen.
Refresh Click Refresh to update the screen.
Cancel Click Cancel to restore default value.