Can't issue any command when connected through console port.

[FranzM]

Hi

Last time I had two identical cases with two different sites belonging to two different clients. In both cases OS 6850 in stacked configuration were involved.
First on all I couldn't reach switches using telnet or www. I tried to connect trough console port of primary switch in the stack, and I got output like in picture attached to this topic. I couldn't issue any command, all I got were memorry errors. What's interesting, switch was operating normally all the time, end user's PCs, servers and also IP Phones were working just fine alll the time.
To regain control I had to reboot primary switch manually, which actually casued whole stack to reboot. After that whole stack was working fine, no memory errors etc. In one of this cases this happend aroud 1 year after installation, AOS was 6.3.4 release. I did an upgrade to 6.4.3.668.R01, so far it's working fine.
In second case whole situation took place only week (!) after instllation, with brand new switches with AOS 6.4.3.520.R01.
Did any of you had situation like that before?

Regards
Franz

[cedric1]

hello

never see that.
Did you have correct uboot, miniboot version ?

Did you have pmd file ?