Nortel 10BASE-T Using Manual page 217

Table 3-28. IGMP Configuration Screen Fields
Field
Snooping
Proxy
Robust Value
Query Time
309985-C Rev 00
Description
Allows you to enable or disable IGMP Snooping.
This field affects all VLANs (for example, if you disable Snooping for the VLAN
specified in the screen's VLAN field, Snooping is disabled for ALL VLANs).
Default Enabled
Range Enabled, Disabled
Allows the switch to consolidate IGMP Host Membership Reports received on its
downstream ports and to generate a consolidated proxy report for forwarding to its
upstream neighbor.
This field affects all VLANs (for example, if you disable Proxy for the VLAN specified
in the screen's VLAN field, Proxy is disabled for ALL VLANs). You cannot set the
Proxy field value to Disabled unless the Snooping field value is Enabled.
Default Enabled
Range Enabled, Disabled
Allows you to set the switch to offset expected packet loss on a subnet. If packet
losses on a subnet are unacceptably high, the Robust Value field can be increased
to a higher value.
This field affects only the VLAN specified in the screen's VLAN field (for example, if
you change the robust value on the VLAN specified in the screen's VLAN field, other
VLANs are not affected).
Default 2
Range 1 to 64
Allows you to control the number of IGMP messages allowed on the subnet by
varying the Query Interval (the Query Interval is the interval between general
queries sent by the IP multicast router).
This field affects only the VLAN specified in the screen's VLAN field (for example, if
you change the Query Time value field on the VLAN specified in the screen's VLAN
field, other VLANs are not affected).
Default 125 seconds
Range 1 to 512 seconds
Using the Console Interface
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