To Next Page

To Previous Page

ONFIGURING

THE

WITCH

3-208

• IGMP Querier — A router, or multicast-enabled switch, can

periodically ask their hosts if they want to receive multicast traffic. If

there is more than one router/switch on the LAN performing IP

multicasting, one of these devices is elected “querier” and assumes the

role of querying the LAN for group members. It then propagates the

service requests on to any upstream multicast switch/router to ensure

that it will continue to receive the multicast service.

Note: Multicast routers use this information, along with a multicast

routing protocol such as DVMRP or PIM, to support IP

multicasting across the Internet.

Command Attributes

• IGMP Status — When enabled, the switch will monitor network

traffic to determine which hosts want to receive multicast traffic. This

is also referred to as IGMP Snooping. (Default: Enabled)

• Act as IGMP Querier — When enabled, the switch can serve as the

Querier, which is responsible for asking hosts if they want to receive

multicast traffic. (Default: Enabled)

• IGMP Query Count — Sets the maximum number of queries issued

for which there has been no response before the switch takes action to

drop a client from the multicast group. (Range: 2-10, Default: 2)

• IGMP Query Interval — Sets the frequency at which the switch

sends IGMP host-query messages.

(Range: 60-125 seconds, Default: 125)

• IGMP Report Delay — Sets the time between receiving an IGMP

Report for an IP multicast address on a port before the switch sends

an IGMP Query out of that port and removes the entry from its list.

(Range: 5-25 seconds, Default: 10)

• IGMP Query Timeout — The time the switch waits after the

previous querier stops before it considers the router port (i.e., the

interface which had been receiving query packets) to have expired.

(Range: 300-500 seconds, Default: 300)

SMC Networks TigerSwitch SMC6128L2 User Manual

Other manuals for SMC Networks TigerSwitch SMC6128L2