EnGenius EGS7228P User Manual download pdf (Page 65)

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

congured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speciedVLANs.

VLAN ID:

Displays the VLAN ID.

Querier State:

Select whether to Enable or Disable

the IGMP querier state for the spec-

iedVLANID.

A querier can periodically ask their

hosts if they wish to receive mul-

ticasttrafc.TheQuerierfeature

will check whether hosts wish

toreceivemulticasttrafc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

speciedversion,thispacketwill

be dropped.

Robustness:

Providesne-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.

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 150 151

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EnGenius EGS7228P User Manual Page 65

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