
4 - 164 WiNG 4.4 Switch System Reference Guide
4.11.2 IGMP Snoop Querier Configuration
Use the
IGMP Snoop Querier Config
tab to view and configure IGMP Snoop Querier Configuration.
The IGMP Snoop Querier is used to keep host memberships alive. It is primarily used in a network where there is a
Multicast Streaming Server and hosts that subscribe to the Multicast server and there is no IGMP Querier present. The
switch can perform the role of an IGMP Querier. An IGMP Querier sends out periodic IGMP Query packets. Interested hosts
reply with IGMP Report packet. IGMP Snooping is only done on wireless portals. IGMP Multicast packets are flooded on
wired ports.
To view and configure IGMP Snoop Querier Configuration details:
1. Select
Network
>
IGMP Snooping
from the main menu tree.
2. Select the
IGMP Snoop Querier Config
tab
The
IGMP Snoop Querier Config
tab displays the following information:
Max Response Time
Specifies the maximum allowed time before sending a responding report. When no reports are received
from a portal, that portal information is removed from the Snooping Table. The switch will only forward
Multicast Packets to portals that are present in the Snooping Table. For IGMP reports from wired ports,
the switch forwards these reports to the Multicast Router Ports.
Version
Sets the IGMP version compatibility. Select from IGMP v1, v2, or v3.
IP Address
This address is applied as the source address in the IGMP Query packet. This value is used as the default
VLAN Querier IP address.
Present Timeout
This is the time duration after which the switch's IGMP Querier is activated. A Querier is used to
accommodate any query loss due to a Multicast Router being down or not accessible. It is also used to
accommodate any local network query loss. The Querier generates IGMP queries on receipt of which
the interested hosts reply with an IGMP report. On receipt of an IGMP report, the Snooping Table on the
switch is updated with the host's portal information. Any IGMP packet from the Multicast Server is then
forwarded to the particular portal.
Interval
This is the common interval in seconds between two IGMP Queries generated by the IGMP Querier. This
is valid for all VLANs.
Summary of Contents for WiNG 4.4
Page 1: ...Motorola Solutions WiNG 4 4 SYSTEM REFERENCE GUIDE ...
Page 2: ......
Page 3: ...MOTOROLA SOLUTIONS WING 4 4 SYSTEM REFERENCE GUIDE 72E 157062 01 Revision A January 2012 ...
Page 6: ...iv WiNG 4 4 Switch System Reference Guide ...
Page 14: ...xii WiNG 4 4 Switch System Reference Guide ...
Page 48: ...1 32 WiNG 4 4 Switch System Reference Guide ...
Page 58: ...2 10 WiNG 4 4 Switch System Reference Guide ...
Page 280: ...4 176 WiNG 4 4 Switch System Reference Guide ...
Page 352: ...5 72 WiNG 4 4 Switch System Reference Guide ...
Page 476: ...6 124 WiNG 4 4 Switch System Reference Guide ...
Page 506: ...7 30 WiNG 4 4 Switch System Reference Guide ...
Page 532: ...8 26 WiNG 4 4 Switch System Reference Guide ...
Page 536: ...A 4 WiNG 4 4 Switch System Reference Guide ...
Page 544: ...B 12 WiNG 4 4 Switch System Reference Guide ...
Page 558: ...B 26 WiNG 4 4 Switch System Reference Guide ...
Page 574: ...C 16 WiNG 4 4 Switch System Reference Guide ...
Page 596: ...E 4 WiNG 4 4 Switch System Reference Guide ...
Page 597: ......