Table 20 Igmp Tab Fields - Nortel Passport 8600 Configuring

110 Chapter 4 Configuring and graphing ports

Table 20 IGMP tab fields

Field
QueryInterval
QueryMaxResponseTime
Robustness
LastMembQueryIntvl
Version
FastLeaveEnable
StreamLimitEnable
Maximum Number of
Stream
Current Number of
Stream
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Description
The frequency (in seconds) at which IGMP host query packets
are transmitted on the interface. The range is from 1 to 65535,
and the default is 125.
The maximum response time (in 1/10 seconds)
advertised in IGMPv2 general queries on this interface.
This value is can not be configured for IGMPv1.
Smaller values allow a router to prune groups faster.
The range is from 0 to 255, and the default is 100 tenth
seconds (equal to 10 seconds).
Note: This value must be less than the QueryInterval.
This parameter allows tuning for the expected packet loss of a
network. This value is equal to the number of expected query
packet losses per serial query interval, plus 1. If a network is
expected to lose query packets, the robustness value should
be increased.
The range is from 2 to 255, and the default is 2. The default
value of 2 means that one query per query interval may be
dropped without the querier aging out.
The maximum response time (in 1/10 seconds) that is
inserted into group-specific queries sent in response to leave
group messages. It is also the time between group-specific
query messages. This value can not be configured for
IGMPv1.
Decreasing the value reduces the time to detect the loss of
the last member of a group. The range is from 0 to 255, and
the default is 10 tenth seconds. Nortel Networks recommends
configuring this parameter to values higher than 3. If a fast
leave process is not required, Nortel recommends values
above 10. (The value 3 is equal to 0.3 of a second and 10 is
equal to 1.0 second).
The version of IGMP (1, 2 or 3) that you want to
configure on this interface. For IGMP to function
correctly, all routers on a LAN must use the same
version. The default is version 2.
Enables fast leave on the interface.
Enables stream limitation on this interface.
Sets the maximum number of streams allowed on this
interface. The range is from 0 to 65535, and the default is 4.
Displays the current number of streams. This is a read-only
value.