[j-nsp] EX4200 9.4R2.9 process crash on previously valid config

Cord MacLeod cordmacleod at gmail.com
Thu Apr 2 21:52:58 EDT 2009

Apparently my Juniper reps are completely different from yours, I've  
been recommended by them not to run 9.4 on my ex platform as of yet.  
and stick with 9.3R2.8, which I've not run into a bug with yet.  (save  
a minor annoying missing feature of "except" in the ACL)

On Apr 2, 2009, at 10:48 AM, Jeff S Wheeler wrote:

> Upon upgrading an EX4200 stack from 9.2R2.15 to 9.4R2.9, I found that
> some damned process, chassism or something, was crashing repeatedly  
> and
> preventing any interfaces from coming up.  I wish I had taken the time
> to note which process it was, but the following will reproduce it.
> configure any interface as follows
> interfaces {
>  ge-0/0/0 {
>    ether-options {
>      speed {
>        1g;
>      }
>    802.3ad ae0;
>  }
> }
> JUNOS 9.4 won't let you configure that, but the upgrade validator does
> not catch it (and numerous other problems) when you already have it
> configured on an older version.  So if you have the above in your  
> config
> in 9.4R2.9, no interfaces will come up, whatever process (forgot) will
> crash repeatedly, and you will have to hunt down the problem and  
> correct
> it before any ports on your stack can come up again.
> Dearest Juniper, please pay more attention to validating configs in
> newer JUNOS vs configs that are allowed on older EX-series software.
> It's stupid that things like virtual-chassis { pre-provisioned } still
> pass muster and then your whole stack is broken post-upgrade until you
> run a "commit check" and find out what's wrong.  The software for  
> EX4200
> has come a long way in recent months, but you obviously don't have  
> your
> shit together with the upgrade process.  A working software rollback
> process would be a nice addition, too.  Much love -- Jeff ;)
> -- 
> Jeff S Wheeler <jsw at inconcepts.biz> +1-212-981-0607
> Sr Network Operator  /  Innovative Network Concepts
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