N5548UP AAA configuration problem

[Ulrich Hansen]

Hi,

We recently switched a faulty N5548UP with a replacement and everything went fine, with the exception of one minor thing.

We're currently unable to authenticate using tacacs+.

When trying to enter the command 'aaa authentication login default group [groupname]', the following msg appears:

too big pss key or value size

could not update aaa configuration

We're running 5.0(3)N2(2b).

Thanks

/Ulrich

[nkarpysh · Accepted solution]

Hello,

That seems to be known DDTS

CSCts71286 N7K, N5k and MDS AAA authentication issue

Please consider this workaround:

Workaround:

Copy the configuration, write erase, reload.

Procedure:

Switch# copy running-config bootflash:runconfig

Switch# write erase

Switch# reload

*** wait for reload ***

Switch# copy bootflash:runconfig running-config

Workaround:

Copy the configuration, write erase, reload.

Procedure:

Switch# copy running-config bootflash:runconfig

Switch# write erase

Switch# reload

*** wait for reload ***

Switch# copy bootflash:runconfig running-config

Hope this helps,

Nik

[Ulrich Hansen]

Hi Nik,

Thanks for the info.

Reloading the switch however, is not really an option right now. Guess I'll have to schedule it later.

/Ulrich

[Kiel Martin]

I had this same issue last night. I write erased, rebooted, and copy the config back on and it worked fine. When I removed aaa commands and tried to put them back on, I had no luck. Write erase, reboot, and repaste config worked.