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Catalyst 4500 Series Switch Cisco IOS System Message Guide
OL-13091-01
Chapter 2 Messages and Recovery Procedures
DHCP SNOOPING Messages
Error Message DHCP_SNOOPING-4-SSO_SYNC_ACK_ERROR: Error is encountered in processing
acknowledgement for DHCP snooping binding sync [char]. ack message txn id:[hex]
Explanation
There was an error in handling the DHCP synchronization acknowledgement. In most
of these cases, the ACK message is ignored.
Recommended Action This is an informational message only. No action is required.
Error Message DHCP_SNOOPING-4-STANDBY_AGENT_OPERATION_FAILED: DHCP snooping binding
transfer failed on the Standby Supervisor. [char]
Explanation
If the DHCP snooping database supporting SSO is configured as a local device, both
supervisor engines will update their database whenever there is an update regarding bindings. This
error message is an indication that a snooping database update on the standby supervisor engine
failed in the manner mentioned. The most likely cause for these problems is if the snooping database
is configured as a slot0 device, but functioning compact flash memory is only present on the active
supervisor engine’s slot0 while the standby supervisor engine’s slot0 is empty or faulty. Possible
variations in output include:
“URL not available for use.”
“Not enough memory available for creating agent.”
“Number of agents reached maximum supported limit.”
“Unable to create agent.”
“Unable to access URL.”
“Unable to start agent.”
“Abort timer expiry.”
“Number of entries exceeded max supported limit.”
“Unable to transfer bindings. Memory allocation failure.”
“Error reading the remote database.”
“Error writing to remote database.”
“Expected more data on read.”
“Type string invalid.”
“Version string invalid.”
“New line expected in database.”
“\'TYPE\' not found in remote database.”
“\'VERSION\' not found in remote database.”
“\'BEGIN \' not found in remote database.”
“\'END\' not found in remote database.”
“Type string not found in remote database.”
“Version string not found in remote database.”
“Checksum failed on an entry in remote database.”
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