Configuring The Action; Configure Igmp Filtering - Nortel Alteon OS 42C4911 Application Manual

Each IGMP Filter allows you to set a start and end point that defines the range of IP addresses
upon which the filter takes action. Each IP address in the range must be between 224.0.1.0 and
239.255.255.255. If you choose any as the start point, then the filter acts upon all addresses
between 224.0.0.0 and the address entered as the end point. If you enter any as the end point,
then the filter acts upon all addresses between the address entered as the start point and
239.255.255.255.

Configuring the Action

Each IGMP filter can allow or deny IP multicasts to the range of IP addresses configured. If
you configure the filter to deny IP multicasts, then IGMP Membership Reports from multicast
groups within the range are dropped. You can configure a secondary filter to allow IP multi-
casts to a small range of addresses within a larger range that a primary filter is configured to
deny. The two filters work together to allow IP multicasts to a small subset of addresses within
the larger range of addresses.

Configure IGMP Filtering

1. Enable IGMP Filtering on the switch.
>> /cfg/l3/igmp/igmpflt
>> IGMP Filter# ena
Current status: disabled
New status:
2. Define an IGMP filter.
>> /cfg/l3/igmp/igmpflt
>>IGMP Filter# filter 1
>>IGMP Filter 1 Definition# range 224.0.1.0 (Enter first IP address of the range)
Current multicast address2: any
Enter new multicast address2 or any: 226.0.0.0 (Enter second IP address)
Current multicast address1:
New pending multicast address1: 224.0.1.0
Current multicast address2:
New pending multicast address2: 226.0.0.0
>>IGMP Filter 1 Definition# action deny
>>IGMP Filter 1 Definition# ena
42C4911, January 2007
enabled
any
any
Alteon OS Application Guide
(Select IGMP Filtering menu)
(Enable IGMP Filtering)
(Select IGMP Filtering menu)
(Select Filter 1 Definition menu)
(Deny multicast traffic)
(Enable the filter)
Chapter 10: IGMP 169