Nexus 7K Switch is displaying "%TACACS-3-TACACS_ERROR_MESSAGE: All servers failed to respond" error.

Unanswered Question
Sep 19th, 2011

I seem to be getting this error every two minutes or so. Everything on the switch works ok, including tacacs (I can log onto the switch using my ACS account) so I don't see why I'm getting this error?

Can anyone assist?

I have this problem too.
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Jerry Ye Mon, 09/19/2011 - 08:31

What code are you running?

Do you have no ip domain-lookup configured?

Regards,

jerry

JMatthews100 Tue, 09/20/2011 - 01:26

We're running version 5.1.1.

We have "ip domain-lookup" configured. I believe there is an unspecified bug which means you cannot do a "copy run start" if you have "no ip domain-lookup" and no domain specified.

MariusGunnerud Tue, 09/20/2011 - 02:43

Hi James,

If you issue the test aaa command does it return an error, and if so what is that error?

JMatthews100 Tue, 09/20/2011 - 02:50

No errors are returned -

DS0102# test aaa server tacacs+ 10.184.100.45 0355414 ######## user has been authenticated

DS0102# test aaa group LTSB 0355414 ####### user has been authenticated

Amit Singh Tue, 09/20/2011 - 04:51

Hi James,

You are hitting CSCtj83417 bug with this behaviour. This is fixed in 5.2(1) release posted on CCO.

HTH,

-amit singh

Jerry Ye Tue, 09/20/2011 - 06:45

Amit, The only possible reason that it is hitting CSCtj83417 bug is ip domain lookup is configured after TACACS is enabled and configured. Otherwise, it doesn't match the condiction in the bug.

James, you are running a very bad code 5.1.1. You should upgrade it to 5.1.4 or so. If you are indeed hitting CSCtj83417, you can try a system switchover to see that goes away.

Regards,

jerry

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Posted September 19, 2011 at 8:17 AM
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