Administrator Guide

Location Description
• ip pim sparse-mode
• ip address 10.11.12.2/24
• no shutdown
2/31
• Interface GigabitEthernet 2/31
• ip pim sparse-mode
• ip address 10.11.23.1/24
• no shutdown
3/1
• Interface GigabitEthernet 3/1
• ip pim sparse-mode
• ip address 10.11.5.1/24
• no shutdown
3/11
• Interface GigabitEthernet 3/11
• ip pim sparse-mode
• ip address 10.11.13.2/24
• no shutdown
3/21
• Interface GigabitEthernet 3/21
• ip pim sparse-mode
• ip address 10.11.23.2/24
• no shutdown
Receiver 1
• Interface VLAN 300
• ip pim sparse-mode
• ip address 10.11.3.1/24
• untagged GigabitEthernet 1/1
• no shutdown
Receiver 2
• Interface VLAN 400
• ip pim sparse-mode
• ip address 10.11.4.1/24
• untagged GigabitEthernet 1/2
• ip igmp access-group igmpjoinfilR2G2
• no shutdown
Rate Limiting IGMP Join Requests
If you expect a burst of IGMP Joins, protect the IGMP process from overload by limiting that rate at which new groups can be joined.
Hosts whose IGMP requests are denied will use the retry mechanism built-in to IGMP so that they’re membership is delayed rather than
permanently denied.
• Limit the rate at which new groups can be joined.
INTERFACE mode
ip igmp group-join-limit
To view the enable status of this feature, use the show ip igmp interface command from EXEC Privilege mode.
Preventing a PIM Router from Forming an Adjacency
To prevent a router from participating in PIM (for example, to configure stub multicast routing), use the following command.
• Prevent a router from participating in protocol independent multicast (PIM).
INTERFACE mode
ip pim neighbor-filter
578
Multicast Features