PIM-DM (Dense Mode) on the 5300xl Switches 
Applicable RFCs 
Message  Meaning 
Unable to alloc a msg buffer for 
Multicast routing is unable to acquire memory for a flow. 
< text-message > (<counter>) 
Router memory is oversubscribed. Reduce the number of 
VLANs or the number of features in use. Remedies include 
one or more of the following: 
•  Reduce the number of configured VLANs by moving 
some VLANs to another router. 
•  Free up system resources by disabling another feature, 
such as one of the spanning-tree protocols or either the 
RIP or the OSPF routing protocol. (Unless you are using 
static routes, you will need to retain a minimum of one 
unicast routing protocol.) Another option that may help 
is to reduce the number of configured QoS filters. 
•  Move some hosts that create multicast demand to 
another router. 
Applicable RFCs 
PIM on the Switch Series 5300XL devices is compatible with these RFCs: 
■  RFC 3376 - Internet Group Management Protocol, Version 3 
■  RFC 2365 - Administratively Scoped IP Multicast 
■  RFC 2932 - Multicast Routing MIB, with exceptions (Refer to "Exceptions 
to Support for RFC 2932 - Multicast Routing MIB".) 
■  RFC 2933 - IGMP MIB 
■  RFC 2934 - Protocol Independent Multicast MIB for IPv4 
■  draft-ietf-ssm-arch-01.txt - Source-Specific Multicast  for IP (draft speci-
fication, expires May 2003 
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