For 10G support, you need to use a 40G [proper] Optic and channelize this to 4 
x 10G.

Just FYI. Rih

Richard McGovern
Sr Sales Engineer, Juniper Networks
978-618-3342

I’d rather be lucky than good, as I know I am not good
I don’t make the news, I just report it




Juniper Business Use Only

On 12/29/23, 12:44 PM, "Lee Starnes" <lee.t.star...@gmail.com> wrote:
Thanks for the info and links Tobias. really helpful. It must just be a
Juniper thing that it supports only 25G because on Cisco and Mikrotik it
supports down to 1G. Anyway, at least I have answers and a solution.

Best,

-Lee

On Fri, Dec 29, 2023 at 1:31 AM Tobias Heister via juniper-nsp <
juniper-nsp@puck.nether.net<mailto:juniper-nsp@puck.nether.net>> wrote:

> Hi,
>
> While it sometimes works to let 25G transceivers run at 10G (depending
> on Transceiver and Device(s)) i think in this case you will need a
> different transceiver.
>
> See e.g. HCT for reference:
> https://apps.juniper.net/hct/product/?prd=QFX5200-32C
>
> the PSM only lists 25 and 100 as being supported:
> https://apps.juniper.net/hct/model/?component=JNP-QSFP-100G-PSM4
>
> For 10G SM Breakout something like
> https://apps.juniper.net/hct/model/?component=JNP-QSFP-4X10GE-LR would
> be the way to go.
>
>
> regards
> Tobias
>
> Am 29.12.2023 um 02:38 schrieb Lee Starnes via juniper-nsp:
> > Hello everyone,
> >
> > I am running into an issue on our QFX5200 switches where I have
> installed a
> > QSFP-100G-PSM4 optic. This can do 1G/10G/25G on the 4 channels. My issue
> is
> > that I am not able to get the interfaces to go to 10G even though I have
> > set them as such.
> >
> > If setting all 4 channels to 10G only a single interface shows at 100G.
> If
> > I set them all to 25G, all 4 show as 25G. Then if I change one of the
> > channels to 10G, all 4 remain as 25G.
> >
> > Is this an issue with how I am setting this up or an issue with the type
> of
> > Optic being used? Below is the config for the ports in the last state I
> > tested.
> >
> > chassis {
> >      fpc 0 {
> >          pic 0 {
> >              port 0 {
> >                  channel-speed 10g;
> >              }
> >              port 1 {
> >                  channel-speed 25g;
> >              }
> >              port 2 {
> >                  channel-speed 25g;
> >              }
> >              port 3 {
> >                  channel-speed 25g;
> >              }
> >
> > Thanks for any info or documents you can point me to.
> >
> > Best,
> >
> > -Lee
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