[j-nsp] Juniper QFX5200-32c and QSFP28 channelized optics

[Tobias Heister]

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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