114
Querier Settings
IGMP snooping requires that one central Switch to pe-
riodically query all end devices on the network to an-
nounce their Multicast memberships and this central
device is the IGMP querier. The snooping Switch sends
out periodic queries with a time interval equal to the
configured querier query interval. The IGMP query keeps
the Switch updated with the current multicast group
membership information. If the Switch does not received
the updated membership information, then it will stop
forwarding multicasts to specified VLANs.
VLAN ID:
Displays the VLAN ID.
Querier State:
Select whether to Enable or Disable
the IGMP querier state for the spec-
ified VLAN ID.
A querier can periodically ask their
hosts if they wish to receive mul-
ticast traffic. The Querier feature
will check whether hosts wish
to receive multicast traffic when
enabled. An Elected querier will
assume the role of querying the
LAN for group members, and then
propagates the service requests on
to any upstream multicast Switch
to ensure that it will continue to
receive the multicast service. This
feature is only supported for IG-
MPv1 and v2 snooping.
Querier Version:
Enter the version of IGMP packet
that will be sent by this port. If
an IGMP packet received by the
port has a version higher than the
specified version, this packet will
be dropped.
Robustness:
Provides fine-tuning to allow for
expected packet loss on a subnet. It
is used in calculating the following
IGMP message intervals. The de-
fault is 2.
Interval:
Enter the amount of time in sec-
onds between general query
transmissions. The default is 125
seconds
Содержание EWS5912FP
Страница 7: ...7 Chapter 1 Product Overview ...
Страница 19: ...19 Chapter 2 Controller Management ...
Страница 47: ...47 Apply Click APPLY to update the the system settings ...
Страница 65: ...65 Chapter 3 Switch Management ...
Страница 78: ...78 Apply Click APPLY to update the the system settings ...
Страница 116: ...116 Group List The Group List displays VLAN ID Group IP Address and Members Port in the IGMP Snooping List ...
Страница 120: ...120 Group List The Group List displays the VLAN ID IPv6 Address and Members Port in the MLD Snooping List ...
Страница 165: ...165 Apply Click Apply to update the system settings ...
Страница 187: ...187 Click the Apply button to accept the changes or the Cancel button to discard them ...
Страница 194: ...194 Chapter 4 Maintenance ...
Страница 198: ...198 Appendix ...