Configure IGMP Basic Functions

Configuration Condition

Before configuring the IGMP basic functions, first complete the following task:

• Configure the interface network layer address, making the neighboring node network layer reachable

Enable IGMP Protocol

Table 5–2 Enable the IGMP protocol

Configure IGMP Version

Table 5–3 Configure the IGMP version

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  Because the packet structure and kind of different versions of IGMP protocols are different, it is suggested to configure the same version of IGMP for all devices on the same subnet.

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Configure Static Group Adding

After configuring one static group or source group in the interface, the device regards that the interface has the receiver of the multicast group or source group.

Table 5–4 Configure static group adding

Configure Multicast Group Filter

The interface configured with the IGMP multicast group filter filters the group member relation report in the segment according to the ACL rules and only the group member relation report permitted by ACL is processed and the un-permitted is directly dropped. For the existing but not permitted by ACL multicast group, immediately delete the multicast group information.

Table 5–5 Configure multicast group filter

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  ip igmp access-group Command only supports the standard ACL.

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Configure SSM Multicast Group Filter

After configuring the range of the source groups received by IGMP, filter the received source group member relation report to limit the source group range the interface serves. For the groups belonging to the PIM-SSM range, only not the (IS_EX, TO_EX) member relation report of IGMPv3 permitted by the access list (S, G ) can be accepted.

Table 5–6 Configure the SSM multicast group filter

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  ip igmp ssm-access-group can take effect only when the interface enables IGMPv3.
• ip igmp ssm-access-group takes effect only for the source groups in the PIM SSM range.
• ip igmp ssm-access-group only supports the extended ACL.

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