Startup of Trap Listener is failed may be due to port 162 conflict

[bjornkoopmans]

Hi all,

Recently we receive the following error when starting DFM:

Startup of Trap Listener is failed may be due to port 162 conflict.

I can't figure out why. As far as I can see port 162 isn't used by any other application, as suggested on http://now.netapp.com/NOW/knowledge/docs/DFM_win/rel381/html/software/opsmgr/monitoring/concept/c_dfm_mntr_snmp-trap-lstn-conf-reqt.html.

If I do a portscan on the DFM server I don't see port 162 being used. I do see that port 161 is being used by service 'snmp', although this service is disabled in services.msc.

If I set the SNMP trap listener to another port, say 1620, I receive the same error.

I can't find anything about this issue n NOW.

Anybody has any ideas?

Thanks in advance!

Kind egards,

Bjorn

[hiyer]

Are you running an antivirus or some such application? It is possible that it's preventing DFM from opening a connection on that port. You will need to configure this application, if any, to allow traffic on that port; or allow all traffic to and from the DFM executables.

[bjornkoopmans]

Hi hiyer

We do have a virusscanner, but port blocking is disabled. Even so I temporarely disabled the virusscanner, but it made no difference.

I forgot to mention that the Windows firewall is also disabled.

Bjorn

[GRAHAMSWIFT]

Hello, have you found the cause of this yet? I have the same issue, I have found an IBM storage manager event retreiver service using the same port but after disabling it I still received the same error. Also changing the port to something that is not showing as used also yeilds the same error.

DFM 4.0.2

[msaravan]

I am not sure about the way you tried to change your port number.

After changing the port number, you have to ensure that you restart the dfm server service for port binding.

[root@lnx ~]# dfm options list | grep -i 162

snmpTrapListenerPort                  162

[root@lnx ~]#

[root@lnx ~]# dfm options set snmpTrapListenerPort=5000

Changed SNMP trap listener port to 5000.

[root@lnx ~]# dfm service stop server

Service: server stopped.

[root@lnx ~]# dfm service start server

Service: server started.

[root@lnx ~]#

Now, watch out your dfmserver.log. It'll have debug messages regarding the port binding process for your trap receiver.

[root@lnx  log]# tail -f dfmserver.log

Sep 06 11:06:57 [dfmserver:DEBUG]: [3872:0xb7f646c0]: Bound to [::]:8488

Sep 06 11:06:57 [dfmserver:DEBUG]: [3872:0xb7f646c0]: Unable to bind to [0.0.0.0]:8488 (errno=98)

Sep 06 11:06:57 [dfmserver: INFO]: [3872:0xb7f646c0]: Initializing Diagnosis Engine.

Sep 06 11:06:57 [dfmserver: INFO]: [3872:0xb7f646c0]: Starting Event Poller thread.

Sep 06 11:06:57 [dfmserver: INFO]: [3872:0x1a1ab90]: snmp port = 5000

Sep 06 11:06:57 [dfmserver: INFO]: [3872:0x1a1ab90]: Starting snmpTrapListener thread...

Please follow the above steps and share your observations.

Regards,

Saravanan

[bjornkoopmans]

Hi Saravanan,

Thanks for your suggestion.

I tried the exact steps you provided, but it did not solve my problem:

C:\Users\adm-xxxxxx>dfm option list | find "162"
snmpTrapListenerPort                  162

C:\Users\adm-xxxxxx>dfm option set snmpTrapListenerPort=5000
Changed SNMP trap listener port to 5000.

C:\Users\adm-xxxxxx>dfm service stop server
Service: server stopped.

C:\Users\adm-xxxxxx>dfm service start server
Service: server started.

C:\Users\adm-xxxxxx>dfm option list | find "5000"
snmpTrapListenerPort                  5000

dfmserver;log:

Sep 06 09:18:24 [dfmserver: INFO]: [26808:0x6cf4]: Stopping server

Sep 06 09:18:24 [dfmserver:DEBUG]: [26808:0x6cf4]: Shutting down Performance Advisor.

Sep 06 09:18:24 [dfmserver: INFO]: [26808:0x6458]: Performance Advisor is now stopped

Sep 06 09:18:24 [dfmserver:DEBUG]: [26808:0x6cf4]: Performance Advisor shutdown completed.

Sep 06 09:18:24 [dfmserver: INFO]: [26808:0x6abc]: Stopped snmptraplistener thread.

Sep 06 09:18:24 [dfmserver: INFO]: [26808:0x6cf4]: Signalling Event Poller thread to shutdown.

Sep 06 09:18:40 [dfmserver: INFO]: [29452:0x6420]: Starting server

Sep 06 09:18:41 [dfmserver:DEBUG]: [29452:0x6420]: Initializing perf instance cache

Sep 06 09:18:41 [dfmserver:DEBUG]: [29452:0x6420]: Initialized perf instance cache

Sep 06 09:18:41 [dfmserver:DEBUG]: [29452:0x6420]: Performance Advisor Initialized

Sep 06 09:18:41 [dfmserver:DEBUG]: [29452:0x6420]: Bound to [::]:8088

Sep 06 09:18:41 [dfmserver:DEBUG]: [29452:0x6420]: Bound to [0.0.0.0]:8088

Sep 06 09:18:43 [dfmserver:DEBUG]: [29452:0x6420]: Bound to [::]:8488

Sep 06 09:18:43 [dfmserver:DEBUG]: [29452:0x6420]: Bound to [0.0.0.0]:8488

Sep 06 09:18:43 [dfmserver: INFO]: [29452:0x6420]: Initializing Diagnosis Engine.

Sep 06 09:18:43 [dfmserver: INFO]: [29452:0x6420]: Starting Event Poller thread.

Sep 06 09:18:43 [dfmserver: INFO]: [29452:0x73f0]: snmp port = 5000

Sep 06 09:18:43 [dfmserver:ERROR]: [29452:0x73f0]: snmptraplistener bind failed.

Sep 06 09:18:43 [dfmserver:ERROR]: [29452:0x73f0]: Startup of Trap Listener is failed may be due to port 5000 conflict.

Sep 06 09:18:45 [dfmserver:DEBUG]: [29452:0x713c]: Warning: api_oper_list includes an undefined API: migrate-route-info.

Any more thoughts?

[msaravan]

Thanks. Your logs are very much helpful. 

Can you please share your OS and DFM details ??

Also, try with port numbers around 8500.

Saravanan

[bjornkoopmans]

Hi Saravanan,

Port 8500 didn't help:

Sep 06 10:50:02 [dfmserver: INFO]: [29452:0x6888]: Stopping server

Sep 06 10:50:02 [dfmserver:DEBUG]: [29452:0x6888]: Shutting down Performance Advisor.

Sep 06 10:50:02 [dfmserver: INFO]: [29452:0x6b78]: Performance Advisor is now stopped

Sep 06 10:50:02 [dfmserver:DEBUG]: [29452:0x6888]: Performance Advisor shutdown completed.

Sep 06 10:50:02 [dfmserver: INFO]: [29452:0x73f0]: Stopped snmptraplistener thread.

Sep 06 10:50:02 [dfmserver: INFO]: [29452:0x6888]: Signalling Event Poller thread to shutdown.

Sep 06 10:50:39 [dfmserver: INFO]: [26540:0x65a8]: Starting server

Sep 06 10:50:40 [dfmserver:DEBUG]: [26540:0x65a8]: Initializing perf instance cache

Sep 06 10:50:40 [dfmserver:DEBUG]: [26540:0x65a8]: Initialized perf instance cache

Sep 06 10:50:40 [dfmserver:DEBUG]: [26540:0x65a8]: Performance Advisor Initialized

Sep 06 10:50:40 [dfmserver:DEBUG]: [26540:0x65a8]: Bound to [::]:8088

Sep 06 10:50:40 [dfmserver:DEBUG]: [26540:0x65a8]: Bound to [0.0.0.0]:8088

Sep 06 10:50:43 [dfmserver:DEBUG]: [26540:0x65a8]: Bound to [::]:8488

Sep 06 10:50:43 [dfmserver:DEBUG]: [26540:0x65a8]: Bound to [0.0.0.0]:8488

Sep 06 10:50:43 [dfmserver: INFO]: [26540:0x65a8]: Initializing Diagnosis Engine.

Sep 06 10:50:43 [dfmserver: INFO]: [26540:0x65a8]: Starting Event Poller thread.

Sep 06 10:50:43 [dfmserver: INFO]: [26540:0x6d64]: snmp port = 8500

Sep 06 10:50:43 [dfmserver:ERROR]: [26540:0x6d64]: snmptraplistener bind failed.

Sep 06 10:50:43 [dfmserver:ERROR]: [26540:0x6d64]: Startup of Trap Listener is failed may be due to port 8500 conflict.

Sep 06 10:50:47 [dfmserver:DEBUG]: [26540:0x6580]: Warning: api_oper_list includes an undefined API: migrate-route-info.

OS: Windows 2008 Enterprise SP2 64-bit

DFM: 4.0.2.7803 (4.0.2)

Thanks for your help.

Bjorn

[manup]

Hi Bjorn,

Were you able to fix this error? I have a customer who is running into the same error and hence not able to add any device to dfm. Were you able to add storage devices in dfm when you had this issue?

Thanks,

Manu

[bjornkoopmans]

Hi Manu,

Unfortunately we never figured out how to resolve this issue, but we never had any trouble adding devices to DFM.

Bjorn

[msaravan]

Hi Manu,

They are different problems.

Adding Device to DFM is completely different from SNMP trap listener failed error.

Can you get me the output of "dfm host diag <filer>" and based on that we can diagnose this further.

Regards,

Saravanan