Thursday, August 6, 2009

Error: %SNMP-3-DVR_DUP_REGN_ERR: Attempt for dupe

ERROR:

SEC 8:000049: Jan 31 22:25:00.760:
%SNMP-3-DVR_DUP_REGN_ERR: Attempt for dupe
regn with SNMP by driver having ifIndex 709 and ifDescr Tunnel0
-Traceback= 204128 204230 92DB90 92DF6C B2CF8C BBF368 BC00C8 1C4EFC 1C5524

1C60B8 1C655C 2EC5CC


Cisco IOS Release 12.4(13b) is a rebuild release for Cisco IOS Release 12.4(13). The caveats (warning) in this section are resolved in Cisco IOS Release 12.4(13b) but may be open in previous Cisco IOS releases.

The following information is provided for each caveat (warning):

•Symptoms—A description of what is observed when the caveat occurs.

•Conditions—The conditions under which the caveat has been known to occur.

•Workaround—Solutions, if available, to counteract the caveat.

Basic System Services
•CSCeb20967

Symptoms: A Route Switch Processor (RSP) may reload unexpectedly when a bus error with an invalid memory address occurs while packets are placed into a hold queue.

[1] "Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS Release 12.0 S, 12.1(14)E4, or 12.2 S when the following sequence of events occurs:

1. A packet is switched via Cisco Express Forwarding (CEF).

2. The egress interface has queueing/shaping configured.

3. The egress interface is congested, causing the packet to be placed into the hold queue."

Symptoms: The following SNMP error message and tracebacks are seen:

SEC 8:000049: Jan 31 22:25:00.760:
%SNMP-3-DVR_DUP_REGN_ERR: Attempt for dupe
regn with SNMP by driver having ifIndex 709 and ifDescr Tunnel0
-Traceback= 204128 204230 92DB90 92DF6C B2CF8C BBF368 BC00C8 1C4EFC 1C5524

1C60B8 1C655C 2EC5CC

Conditions: This symptom was see when new interfaces were added (or existing interfaces like tunnel come up) after bootup, or when new or existing interfaces come up after RPR+ switchover when running Cisco IOS Release 12.0(32)S6. Also, this symptom occurs if the snmp ifindex persist command is configured on the router.


Further Problem Description: Though customer traffic is not affected, this symptom does impact the SNMP stats and other SNMP data for both the original and the new interface. Usually the message is from the standby RP, so once that standby RP becomes active, the data from SNMP polls of these interfaces would not be accurate.

[1] www.cisco.com/en/US/docs/ios/12_4/release/notes

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