The IPv4 multicast group table has been exceeded and at least one multicast forwarding entry was not added in hardware. This system has cards which have varying IPv4 multicast scaling limits and the system limit has been reduced to that of the lowest limit.
Removing cards with lower IPv4 multicast scaling limits can increase the system limit. In addition, "debug hal show ipv4mc" can be used to determine which (S,G) forwarding entries were not added to hardware. Any entry in this display with "IPMC -1" is not currently programmed in hardware.
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IPv4 multicast scaling reduced to the lowest supported limit of the currently present cards.
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