u/EngBearX

Hey,

I lost the SHORT front 2RU brackets for my M4250 and can't find them anywhere. If anyone has a unneeded set, I'd be happy to buy them.

Thanks!

Hi everyone,

I’m currently rewiring some video equipment and wanted to ask for a sanity check.

We have an I/O panel and video equipment, mostly Ultrix cards with HD-BNC, and I’m considering using short runs of Canare L-2.5CHD inside the rack / panel area. The runs would be roughly 10 ft or less.

After the I/O panel (Neutrik modules), we usually go out over longer coax runs, often around 200-300 ft, using Belden 1694A or 4694R. We very often (not always) send 12G / 4K signals.

My question is: does using a short length of smaller cable like Canare L-2.5CHD before the longer 200-300 ft Belden run meaningfully affect the overall signal performance? In other words, does that short section become a weak link, even if the main cable run is high-quality 12G-capable coax?

Previously we used Belden 1855A for similar short internal runs and everything worked fine. I just never bothered to ask whether this was best practice, or whether it only worked because the short length was not enough to matter.

Thanks.

Hey,

I’m completely new to Dell switches, so I have quite a few questions. Our network is based on Juniper, but Juniper switches with SFP28 ports are very expensive for Ceph cluster in our case. I found the Dell PowerSwitch S5212F-ON, and it seems like it might be exactly what we need, especially because of the half-RU form factor.

I’m planning to use two PowerSwitch S5212F-ON switches and separate each one into two VLANs: one for the Ceph public/front-end network and another for the Ceph cluster network. Then I would connect the QSFP ports to our Juniper virtual chassis. I have not thought this part through fully yet, but I assume it should not be too difficult.

A few questions:

1. Operating system: I assume I would need to use Dell SmartFabric OS10. Is that correct?
2. Is there a web GUI for making configuration changes, or is it CLI only? This is not a major issue.
3. Does the S5212F-ON work reliably with non-Dell SFP modules? We have a large number of Juniper modules, and I would like to reuse them if possible.
4. How does licensing work? If I buy the switch, does it come with lifetime software updates, or do I need to purchase additional licenses, support plans, or subscriptions?
5. Where can I find a list of all part numbers/options for this model?
6. Is there anything I might be missing? I mean, Is this switch designed for a completely different use case?
7. Is there a reason these switches are not widely available through stores like CDW? It seems like I may need to contact Dell directly.

Thanks!