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IGMP Query
Use this page to configure the IGMP Query feature. Since the ES8508
can only be configured by member ports of the management VLAN,
the IGMP Query can only be enabled on the management VLAN. If
you want to run IGMP Snooping feature in several VLANs, first check
to see whether each VLAN has its own IGMP Querier.
The IGMP querier periodically sends query packets to all end-
stations on the LANs or VLANs that are connected to it. For networks
with more than one IGMP querier, a switch with the lowest IP
address becomes the IGMP querier.
IGMP Query Page
Version
Query Interval(s)
Query Maximum
Response Time
Apply
Unknown Multicast
This page allows you to decide how to forward the unknown multicast traffic. After
enabling IGMP Snooping, the known multicast can be filtered by IGMP Snooping
mechanism and forwarded to the member ports of known multicast groups. The other
multicast streams that are not learned are-called unknown multicasts, the ES8508
decides how to forward them based on the setting on this page.
UnKnown Multicast Page
Send to Query
Ports
Send to All Ports
Discard
Apply
RocketLinx ES8508 Series User Guide: 2000575 Rev. A
Select Version 1, Version 2 or Disable.
•
Version 1 means IGMP V1 General Query
•
Version 2 means IGMP V2 General Query. The query is forwarded to all
multicast groups in the VLAN.
•
Disable allows you to disable IGMP Query.
The period of query (seconds) sent by querier. Enter a number between 1
and 65,535.
The span querier detect (seconds) to confirm there are no more directly
connected group members on a LAN. Enter a number between 1 and 25.
Click Apply to apply the settings.
Note: You must Save the settings
settings if the ES8508 is powered off.
The unknown multicast is sent to the Query ports. The
Query port means the port received the IGMP Query
packets. It is usually the uplink port of the switch.
The unknown multicast is flooded on all ports even if they
are not member ports of the groups.
The unknown multicast is discarded. Non-member ports
do not receive the unknown multicast streams.
Click Apply to apply the settings.
Note: You must Save the settings
to maintain these settings if the ES8508 is powered
off.
Configuration Using the Web Interface
(Page
129), if you want to maintain these
(Page
129), if you want
IGMP Query - 105
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