Configuring IP Multicasting and Multimedia Services
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Parameter: Designated Router Timeout
Path: Configuration Manager > Protocols > IP > IGMP/IGMP Relay > Interfaces
Default: 140
Options: 10 to 8192 (seconds)
Function: Specifies in seconds the amount of time that can elapse after the last host
query message before the IGMP designated router is considered down.
Instructions: Set an approximate value. This value should be greater than the query rate of
all IGMP routers on the network. The maximum value, 8192 seconds, is equal
to 2 hours, 16 minutes, and 32 seconds.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.13.2.1.7
Parameter: Max Host Response Time
Path: Configuration Manager > Protocols > IP > IGMP/IGMP Relay > Interfaces
Default: 100
Options: 1 to 100 (tenths of a second)
Function: Specifies, in tenths of a second, a maximum value for the amount of time that a
host must wait before responding to a query. IGMP places this value in the code
field of an IGMP query.
Instructions: Specify a maximum response time for this interface.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.13.2.1.15
Parameter: Mtrace Entry Lifetime
Path: Configuration Manager > Protocols > IP > IGMP/IGMP Relay > Interfaces
Default: 30
Options: 30 to 8192 (seconds)
Function: Specifies in seconds the amount of time that a router should keep a forwarding
cache entry that was created specifically for Mtrace.
Instructions: Specify an Mtrace lifetime value for the interface. The maximum value, 8192
seconds, is equal to 2 hours, 16 minutes, and 32 seconds.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.13.2.1.18
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