CTC Union GSW-3208M2, Руководство пользователя

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Chapter 4
Web Configuration & Operation
4.11.1.2 VLAN Configuration
This page is used to configure IGMP Snooping for an interface.
VLAN ID: Specify VLAN ID for IGMP snooping.
Snooping Enabled:
Select the checkbox to enable snooping feature on an interface basis. When enabled, the switch will
monitor network traffic on the specified interface to determine which hosts want to receive multicast services. If IGMP
snooping is enabled globally and an interface’s IGMP snooping is enabled on an interface, IGMP snooping on an interface
will take precedence. When disabled, snooping can still be configured on an interface. However, settings will only take
effect until IGMP snooping is enabled globally.
Querier Election: Enable to join querier election in the VLAN. When disabled, it will act as an IGMP non-querier.
Querier Address: Specify the IPv4 source address used in IP header for IGMP querier election. When the field is not
specified, the switch uses the first available IPv4 management address of the IP interface associated with this VLAN.
Compatibility:
This configures how hosts and routers take actions within a network depending on IGMP version selected.
Available options are “IGMP-Auto”, “Forced IGMPv1”, “Forced IGMPv2”, “Forced IGMPv3”. By default, IGMP-Auto is used.
RV:
The robustness variable (RV) allows tuning for the expected packet loss on a subnet. If a subnet is susceptible to
packet loss, this value can be increased. The RV value must not be zero and should not be one. The value should be 2 or
greater. By default, it is set to 2.
QI (sec):
The Query Interval is the interval between IGMP General Query messages sent by the Querier. The default
Querier Interval is 125 seconds.
QRI:
The Query Response Interval is the maximum amount of time that the IGMP router waits to receive a response to a
General Query message. The QRI applies when the switch is acting as the querier and is used to inform other devices of
the maximum time this system waits for a response to general queries. By default, RQI is set to 10 seconds. The allowed
range is 10
~ 31744 tenths of a second.
LLQI:
The Last Listener Query Interval sets the interval that waits for a response to a group-specific or group-and-source
specific query message.
URI:
The Unsolicited Report Interval is the amount of time that the upstream interface should transmit unsolicited IGMP
reports when report suppression/proxy reporting is enabled. By default, URI is set to 1 second. The allowed range for URI
is 0
~
31744 seconds.
Click the “Add New IGMP VLAN” button to add a new entry.
Click the “Delete” button to remove a newly-inserted entry or select the checkbox to remove a saved entry during the
next save.
Click the “Save” button to save settings or changes.
Click the “Reset” button to restore changed settings to the default settings.