Cisco Catalyst 4500 Series Message Guide

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Catalyst 4500 Series Switch Cisco IOS System Message Guide Release 12.2(31)SGA
OL-11541-01
Chapter 2 Messages and Recovery Procedures
EBM Messages
Error Message C4K_EBM-3-CANTALLOCATEPORTHOSTENTRY:No port host table memory to add
entry for addr [mac-addr] / [mac-addr]
Explanation
There is insufficient memory for this internal data structure.
Recommended Action Install additional memory.
Error Message C4K_EBM-3-CANTALLOCATEVLANGROUPENTRY:No vlan group table memory to add
entry for addr %ea
Explanation
There is insufficient memory to support additional Layer 2 group entries corresponding
to IP multicast groups.
Recommended Action Install additional memory. If memory is unavailable, turn off Cisco Group
Management Protocol (CGMP)/Internet Group Management Protocol (IGMP).
Error Message C4K_EBM-3-CANTALLOCATEVLANHOSTENTRY:No vlan host table memory to add
entry for addr %ea
Explanation
There is insufficient memory to support additional host addresses.
Recommended Action Install additional memory.
EBM-4
Error Message C4K_EBM-4-HOSTFLAPPING:Host [mac-addr] in vlan [dec] is flapping
between port [char] and port [char]
Explanation
The specified host is detected as a source address on multiple ports. Typically, a host is
supposed to be learned on only one port. A spanning tree loop is the most common cause of this
condition. All traffic from the specified host is temporarily dropped. After 15 seconds, forwarding
is reenabled. If the problem persists, the traffic from the problem host continues to be dropped
indefinitely.
Recommended Action Make sure that spanning tree is enabled to prevent spanning tree loops. If you
have spanning tree disabled, make sure that you have no spanning tree loops in your network.
Error Message C4K_EBM-4-MAXHOSTCHKPTMESSAGEQSIZEEXCEEDED: Backlog of checkpoint
message waiting to be synced to standby has exceeded pre-defined limits. The host
table may become out-of-sync with active.
Explanation
The active supervisor engine is overloaded and unable to synchronize host messages to
the standby supervisor engine or the standby supervisor engine is not in the proper state.
Recommended Action Examine syslog messages from the active supervisor engine and standby
supervisor engine to determine if any errors have been reported.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E