[j-nsp] M10i JUNOS Upgrade

[Jeff Wheeler]

On Wed, Sep 28, 2011 at 2:43 PM, Jake Jake <2012jake at gmail.com> wrote:
> I am looking at upgrading the JUNOS on our M10i router. Current JUNOS
> platform is 6.3R1.3 . The router has redundant routing Engine  RE-5.0 with
> 512MB DRAM . Also there is no compact flash on board only *ad1s1*. Can any
> one suggest on if I can upgrade the router to 11.1R5.4 with the current
> hardware specification .  Please advise on if a direct upgrade can be done
> as well from 6.3 to 11.1.

If you have DFZ routes you should upgrade the RAM to 768MB, or
alternatively, replace the router or buy more modern routing engines.
There is a big jump in memory usage in 8.x and if you have only 512MB
and are carrying "Internet" BGP routes, you will be using the swap and
the RE will perform badly.

No, you cannot do a direct upgrade from 6.3 to 11.1.  You'll be going
through quite a few intermediate software versions to do that.  It
will be easier to simply reinstall Junos from an 11.1 install-media
disk and then load your configuration.

> Plus as I understand M10i has 3 DRAM slots. Is there any way of knowing the
> combination of RAM used ..i.e 256+256MB or a single 512MB RAM.

I don't think the RE-5.0 will recognize more than 256MB per slot.

-- 
Jeff S Wheeler <jsw at inconcepts.biz>
Sr Network Operator  /  Innovative Network Concepts