Netgear S3300-28X (GS728TX) - ProSAFE S3300 Smart Switch Series Guia Do Administrador
Configuring Switching
150
S3300 Smart Switch
IGMP Snooping Querier
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. The IGMP query responses, known as IGMP reports, keep the switch updated with
the current multicast group membership on a port-by-port basis. If the switch does not
receive updated membership information in a timely fashion, it will stop forwarding multicasts
to the port where the end device is located.
on the network to announce their multicast memberships. This central device is the IGMP
querier. The IGMP query responses, known as IGMP reports, keep the switch updated with
the current multicast group membership on a port-by-port basis. If the switch does not
receive updated membership information in a timely fashion, it will stop forwarding multicasts
to the port where the end device is located.
These screens enable you to configure and display information on IGMP snooping queriers
on the network and, separately, on VLANs.
on the network and, separately, on VLANs.
The IGMP Snooping Querier menu contains links described in the following sections.
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IGMP Snooping Querier Configuration
Use this screen to enable or disable the IGMP snooping querier feature, specify the IP
address of the router to perform the querying, and configure the related parameters.
address of the router to perform the querying, and configure the related parameters.
To configure IGMP snooping querier settings:
1.
Select Switching
Multicast
IGMP Snooping Querier
IGMP Snooping
Querier
Configuration.
2.
Next to the Querier Admin Mode field, enable or disable the administrative mode for IGMP
snooping querier.
snooping querier.
3.
In the Snooping Querier Address field, specify the IP address to be used as source address
in periodic IGMP queries.
in periodic IGMP queries.
This address is used when no address is configured on the VLAN on which the query is
being sent.
being sent.
4.
In the IGMP Version field, specify the IGMP protocol version used in periodic IGMP queries.
5.
In the Query Interval field, specify the time interval in seconds between periodic queries sent
by the snooping querier.
by the snooping querier.
The Query Interval must be a value in the range of 1–1800 seconds. The default value is
60.
60.
6.
In the Querier Expiry Interval field, specify the time interval in seconds after which the last
querier information is removed.
querier information is removed.
The Querier Expiry Interval must be a value in the range of 60–300 seconds. The default
value is 125.
value is 125.
7.
Click the Apply button.