Switch - Ethernet Switch User Manual

ONFIGURING

THE

WITCH

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adjacent 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: Disabled)

• 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.

(Default: 2, Range: 2 - 10)

• IGMP Report Delay — Sets the time (in seconds) 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. (Default: 10, Range: 5 - 30)

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

• IGMP Version — Sets the protocol version for compatibility

with other devices on the network. (Default: 2, Range: 1 - 2)

Notes: 1. All systems on the subnet must support the same

version.

2. Some attributes are only enabled for IGMPv2, including

IGMP Report Delay and IGMP Query Timeout.