| 09:50 | topi` | vpeter: are there any cheaper alternatives for 1000M copper? |
| 09:50 | topi` | all SFP moduels seem to be pretty expensive |
| 09:55 | jnettlet | topi`, should be around $20 |
| 09:55 | jnettlet | then possibly shipping and import fees |
| 09:56 | suihkulokki | I think the cheapest way to use SFP is with Direct Attach Copper cable? |
| 09:57 | jnettlet | but then you generally need to be connecting SFP -> SFP |
| 09:59 | jnettlet | I have been buying from fiberstore. http://www.fs.com/products/20057.html |
| 10:00 | jnettlet | Really good customer service, however you will need to pay import tax |
| 10:17 | vpeter | jnettlet: yes, 20 $ + at least shipping another 10. At the end 30€ is not that bad price. |
| 10:19 | vpeter | I'm still waiting for "my" final price - maybe will be few € cheaper because I know the seller and it is for private use :) |
| 10:24 | topi` | with an european reseller, the VAT+customs should no longer be an issue, and postage fees lower as well |
| 10:24 | topi` | dunno how much the ongoing Brexit is going to change this |
| 10:25 | topi` | luckily I'm not in Britain |
| 10:29 | jnettlet | topi`, you can find many modules available on amazon.de I think you will generally find their prices are not much different than fiberstore once everything is tallied. |
| 10:30 | jnettlet | really we are only talking about a $16 part so the VAT should be minimal. Shipping is also relatively cheap due to size. Things can be shipped in envelope form factor. |
| 10:31 | topi` | probably useful to order a bunch of modules at once |
| 10:31 | topi` | I'm looking for using the 2.5GB ethernet on the Macchiatobin |
| 10:31 | topi` | unfortunately everything else, including my NAS box, is on 1GB |
| 10:33 | jnettlet | if you want to go 10Gbps you can find cheap stuff on ebay. Old melanox pcie cards and direct copper connects for around $30 |
| 10:33 | jnettlet | otherwise fiberstore has cheap 10Gbps modules. |
| 10:34 | vpeter | Ok, it is 24 € for mine. I can live with that. |
| 10:36 | jnettlet | http://www.ebay.co.uk/itm/HP-671798-001-10GB-PCI-E-Mellanox-ConnectX-2-Card-High-Profile-SFP-/322543694596?hash=item4b191a3304:g:~KAAAOSwfpVZNXx4 |
| 10:36 | jnettlet | that is from the US. but generally you can keep an eye on things and find old hardware being cycled out. |
| 10:37 | jnettlet | this is what I am using in my build server. https://pastebin.com/KvVUhqkN |
| 10:37 | topi` | but isn't it so that 2.5G is the only "higher" standard that actually cooperates nicely with legacy 1Gbit copper? |
| 10:38 | jnettlet | oh you are going to get a 2.5G copper module. |
| 10:38 | jnettlet | I haven't tested that. I use direct connect copper for 10Gbps, or fiber for 2.5Gbps |
| 10:40 | jnettlet | unless you are looking to connect something through existing runs, it is probably cheaper and easier to just use fiber. |
| 10:41 | jnettlet | there are lots of Brocade 4Gbps modules that have been cycled out of datacenters on ebay, and they happily run at 2.5Gbps |
| 10:42 | topi` | fiber is one option, since we have a problematic house (not easy to draw copper from downstairs to upstairs) |
| 10:42 | topi` | I guess some special tools are needed to do the fiber ends |
| 10:43 | jnettlet | topi, just buy the closest length you need. |
| 10:43 | jnettlet | pre-done fiber is very cheap. |
| 12:52 | jnettlet | topi`, oh the 2.5/5GBASE-T copper you were talking about is the NBASE-T standard. I doubt they will make SFP modules for that standard. The ClearFog can in fact support the bandwidth however I believe the standard is only supported for SFP+. I could be wrong through. |
| 12:53 | jnettlet | funny that Apple just announced support for this in their new iMAC Pro line. |
| 12:54 | jnettlet | although this seems like abit of a fail. Why not just jump to 10Gbps |
| 14:11 | agraf | maybe power consumption and line length? |
| 14:11 | agraf | 10GBASE-T PHYs get insanely hot |
| 14:38 | topi` | there was some reason why ppl looked into NBASE-T instead of 10Gbps |
| 14:38 | topi` | I can't remember the details |
| 14:39 | topi` | jnettlet: the iMac Pro tech specs page says this: |
| 14:39 | topi` | Nbase-T Ethernet supports 1Gb, 2.5Gb, 5Gb, and 10Gb Ethernet using RJ‑45 connector |
| 14:39 | topi` | so I guess they try to support 10GbE as well |
| 14:40 | topi` | that thing must get hot inside that small case :) |
| 14:47 | topi` | actually NBASE-T has been admitted by IEEE, it is 802.11bz it seems |
| 14:47 | topi` | but this must be a pretty recent development |
| 15:15 | rabeeh | ethernet can do 1Mbps, 10, 100, 1000, 2500, 5000, 10G, 25G, 40G, 100G, 200G and 400G |
| 15:15 | rabeeh | too much speeds :) |
| 15:15 | rabeeh | too many |
| 15:15 | rabeeh | anyone 1Tbps? |
| 15:36 | jnettlet | topi`, the 10Gbps over copper is distance limited on Cat-6. I think less than 10m or something similar. 2.5Gbps is the fastest over normal ethernet runs of Cat-5E |
| 15:38 | jnettlet | since you need new switches regardless I am not sure what the benefit of copper over fiber is. I guess use existing patch panels, however I doubt many office run Cat-5/6 will run Nbase-T effectively |
| 15:39 | jnettlet | especially with the patch panels I have seen wired. People tend to really like to unwind that last 1 cm of the twisted pairs which really kills the signal integrity |
| 17:02 | vpeter | Not much luck with old lede. Time to switch cards. |
| 17:02 | vpeter | [ 2.158598] libphy: SFP I2C Bus: probed |
| 17:02 | vpeter | [ 2.211578] sfp sfp: failed to read EEPROM: -6 |
| 17:09 | vpeter | Crap, same with lede master :( |
| 17:20 | vpeter | jnettlet: what can I do? |
| 19:59 | jnettlet | vpeter, some cards are slow on the i2c bus to respond. I think rmk and I bumped the timeout to 3 seconds for some devices. |
| 19:59 | jnettlet | I am just about to have dinner, will dig up the patch after |
| 20:01 | vpeter | yes please. |
| 21:48 | vpeter | jnettlet: can you find this patch tomorrow? I'm on business trip whole day and would like to test module in the evening when I'm returning home. |