Problems with Cisco 2960X
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07-24-2017
03:46 AM
- last edited on
03-25-2019
04:44 PM
by
ciscomoderator
Hi all,
I need your help regarding some issue with 2960X.
I'm running MD version c2960x-universalk9-mz.152-2.E6.bin, but for some reason some PCs lost Ip address random, and Ip phones (Alcatel) for some reason reboots, but not always.
Have you seen this problem before??
We have 3 WS-C2960X-48FPD-L in stack, before with 2960S all worked ok.
Regards
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07-24-2017 03:56 AM
Hi
Any logs are generated during these events?
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
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07-24-2017 04:02 AM
Hi Julio,
thanks for your reply, no logs.
I have log from Alcatel Phone;
20/07/17 02:48:49 000002M|19/03/0/052|=3:0378=IP Phone sig incident 6,(19,1),00:80:9f:76:be:71,3437
20/07/17 02:51:09 000002M|00/00/0/000|=4:0426=IPTOUCH terminal reset 13,(0,0),00:80:9f:76:be:71,3437
20/07/17 05:48:47 000002M|19/03/0/052|=3:0378=IP Phone sig incident 6,(19,1),00:80:9f:76:be:71,3437
20/07/17 05:51:07 000002M|00/00/0/000|=4:0426=IPTOUCH terminal reset 13,(0,0),00:80:9f:76:be:71,3437
20/07/17 11:47:18 000002M|19/03/0/052|=3:0378=IP Phone sig incident 6,(19,1),00:80:9f:76:be:71,3437
20/07/17 11:49:39 000002M|00/00/0/000|=4:0426=IPTOUCH terminal reset 13,(0,0),00:80:9f:76:be:71,3437
20/07/17 12:09:51 000002M|19/03/0/052|=3:0378=IP Phone sig incident 6,(19,1),00:80:9f:76:be:71,3437
20/07/17 12:12:11 000002M|00/00/0/000|=4:0426=IPTOUCH terminal reset 13,(0,0),00:80:9f:76:be:71,3437
Terminal reset due a UDP packet lost (error 13).
It could be QoS??
Regards
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07-24-2017 04:18 AM
Hi Mauro,
It doesn't look like QoS problem, also I see you have the latest IOS released. Have you identified if the problem is on the 3 switches or just on one?
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
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07-24-2017 04:29 AM
Thanks Julio
the issue is with 3 devices, before with 2960s all worked ok.
regards.
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07-24-2017 04:35 AM
Thank you Mauro,
Is possible to provide the config?
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
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07-24-2017 06:06 AM
Sorry,
it's not possible but the config is the same as the previous 2960S
regards
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07-24-2017 07:23 AM
Thank you Mauro, it is ok.
The Cisco 2960X is a very good switch, so it think it could be a bug, if you have contract with Cisco I recommend open a case with the Cisco TAC.
Prior, could you please verify the outputs of the following commands:
show switch
show switch stack-ports
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
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07-24-2017 07:26 AM
Hi Julio
#show switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
#show switch
Switch/Stack Mac Address : 6899.cdfc.b900
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 6899.cdfc.b900 15 4 Ready
2 Member 00e1.6d5b.3100 13 4 Ready
3 Member 00e1.6d66.2c00 11 4 Ready
yes I have case with Cisco TAC.
regards
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07-24-2017 07:31 AM
Hi Mauro,
Great, yes, your stack looks fine.
Please keep us posted about the findings by the Cisco TAC.
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
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07-24-2017 08:18 AM
Hello
Curious, What discovery protocol are you using CDP/LLDP?
Show LLDP errors
Show CDP traffic.
access-list 100 permit udp any any
debug condition interface X/X
debug ip packet detail 100
res
Paul
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Kind Regards
Paul

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07-24-2017 04:30 AM
Hi Mauro Ciccone,
Where is DHCP server configured?
Can you please attach the show tech of your switch?
