Cisco Intelligent Gigabit Ethernet Switch Module Manual page 47

UFAST_MCAST_SW-4-MEM_NOT_AVAILABLE: No memory is available for transmitting UplinkFast packets on
Vlan [dec].
Explanation This message means that no memory is available for sending UplinkFast packets on VLAN
[dec]. [dec] is the VLAN number.
Response Reduce other system activity to reduce memory demands.
45
Chapter 2. Message and Recovery Procedures