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

[Chriztoffer Hansen]

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* Configure port speed independently on interfaces with channelization
- last modified 2024-01-12,
  https://supportportal.juniper.net/s/article/Configure-port-speed-independently-on-interfaces-with-channelization?language=en_US

* Channelizing Interfaces on QFX5120-32C Switches - last modified 2024-01-15,
  https://supportportal.juniper.net/s/article/Channelizing-Interfaces-QFX5120-32C-Switches?language=en_US

On Tue, 9 Jan 2024 at 16:47, Chriztoffer Hansen <ch at ntrv.dk> wrote:
>
> I can confirm using a QSFP+ to SFP+ adapter works, too. (Lane 0 being wired to the front, lane 1-3 are not used)
>
> With the following configuration
>
> fpc 0 {
>     pic 0 {
>         /* Set in groups of four, e.g. 0-3, Here 8-11 */
>         port 8 {
>             channel-speed 10g;
>         }
>         port 9 {
>             channel-speed 10g;
>         }
>         port 10 {
>             channel-speed 10g;
>         }
>         port 11 {
>             channel-speed 10g;
>         }
>     }
> }
>
> With the following type of converter optic. Example - https://www.fs.com/de-en/products/72582.html (QSFP+ to 10G SFP+) https://www.fs.com/de-en/products/178066.html (QSFP28 to 25G SFP28)
>
> (This is on 5120-32c)
>
> On Tue, 9 Jan 2024 at 15:39, Richard McGovern via juniper-nsp <juniper-nsp at puck.nether.net> wrote:
>>
>> 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.starnes at 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 at puck.nether.net<mailto:juniper-nsp at 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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