Chapter 4. Web Configuration & Operation
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CHAPTER 3
WEB OPERATION & CONFIGURATION
Throttling:
This field limits the maximum number of multicast groups that a port can join at the same time. When the
maximum number is reached on a port, any new IGMP join reports will be dropped. By default, unlimited is selected.
Other allowed options are 1
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10
3.11.1.2 VLAN Configuration
This page is used to configure IGMP Snooping for an interface.
Click the “Add New IGMP VLAN” button to add a new entry.
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 unicast 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.
PRI:
Select the priority of interface. This field indicates the IGMP control frame priority level generated by the system
which is used to prioritize different classes of traffic. The allowed range is 0 (best effort) to 7 (highest). By default,
interface priority value is set to 0.
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 0
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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.
Summary of Contents for FRM220-MSW404
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