
692 Multi-Service IronWare Switching Configuration Guide
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PIM Over MCT
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PIM Over MCT
PIM-DM over MCT is not supported in this release.
Figure 186 is an example of the IGMP synchronizing.
FIGURE 186 Synchronizing IGMP State on the CCEPs
Synchronizing IGMP State on the CCEPs
The MDUP channel sends an IGMP report of messages received on the local CCEP to the remote
MCT peer. This ensures that regardless of which MCT peer the client forwards the messages, both
will recieve it and process it, ensuring identical state in both MCT Peers.
Figure 186 displays R sending IGMP report for (*, G1).
If the multicast source lies on the uplink, and receivers lie on the MCTclients, both MCT nodes will
forward traffic to the clients if the ICL goes down. To avoid this situation, the keepalive VLAN must
always be configured under the cluster to enable Master-Slave election and prevent duplicate traffic
to CCEP receivers.
Synchronization method.
Client forwards it to P1 on CCEP1.
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