# Choosing the correct TARGET for runme.sh to build the image for ClearFog LX2160a **URL:** \ **Category:** Uncategorized\ **Created:** [November 21, 2024, 10:50pm UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927 "2024-11-21T22:50:48Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![karim96](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@karim96](https://community.solid-run.com/u/karim96)\ **Post date:** [November 21, 2024, 10:50pm UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/1 "2024-11-21T22:50:48Z")
Hi, I have bought this box SRLX216S00D00GE064C04CH ClearFog CX LX2K 16-core 2GHz LX2160A 4 x 10GbE SFP+ I am trying to build the kernel and Ubuntu for it (using lx2160a\_build git repo [1]), but I don’t know which SERDES configuration I should choose. The default options build the kernel for HoneyComb, but I have ClearFog. So obviously I have to choose another TARGET. Amongst the following the TARGETs LX2160A\_CEX7\_CLEARFOG-CX\_4\_5\ __|LX2160A\_CEX7\_CLEARFOG-CX\_8\_5\__ |LX2160A\_CEX7\_CLEARFOG-CX\_18\_5\_\*) Which one should I choose for my box? [1] [GitHub - SolidRun/lx2160a\_build: Scripts to build basic images for LX2160A COM express type 7 modules](https://github.com/SolidRun/lx2160a_build) Thanks Karim ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [November 22, 2024, 4:24am UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/2 "2024-11-22T04:24:45Z")
well the configuration depends on how you intend to use the qsfp28 cage. Are you using a 4x25G breakout, or just as a single 100G connection? You can download the lx2160a reference manual from NXP and that has all the SERDES configurations listed there. ---
**Author:** ![karim96](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@karim96](https://community.solid-run.com/u/karim96)\ **Post date:** [November 22, 2024, 8:57am UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/3 "2024-11-22T08:57:14Z")
Hi @jnettlet. Thanks for your reply! For reference, my board looks the same as the one shown at the top of this page [1] Please forgive my ignorance. I might say something dumb, but I’m slightly new to this kind of technologies. ATM, I want to use it as a storage server for another bigger machine. The bigger machine has a 40G NIC and I have two types of 40G cables. One is direct cable and another is a breakout cable 4x 10G cable. I tried to create dpmac.1 (eth2 on qsfp28) and dpmac.2 (eth3 on 4x 10G SFP+). When I connect eth2 or eth3 to the bigger machine, the link on the bigger machine goes up, but on the Arm box it doesn’t. so tldr, I want 40G connection. Is that possible? And what SERDES would work in this case? Thanks again! [1] [https://solidrun.atlassian.net/wiki/spaces/developer/pages/197494288/HoneyComb+LX2+ClearFog+CX+LX2+Quick+Start+Guide](https://solidrun.atlassian.net/wiki/spaces/developer/pages/197494288/HoneyComb+LX2+ClearFog+CX+LX2+Quick+Start+Guide) ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [November 22, 2024, 9:47am UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/4 "2024-11-22T09:47:22Z")
yes 40Gb on the qsfp28 is an option, but the configuration may require some slight changes. To just test the 40Gbps connection you can use protocol 20\_5\_2. From there to also support the 4x10Gbps it would require some RCW customizations. ---
**Author:** ![karim96](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@karim96](https://community.solid-run.com/u/karim96)\ **Post date:** [November 22, 2024, 6:00pm UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/5 "2024-11-22T18:00:31Z")
Hi @jnettlet I choose 20\_5\_2 as per your suggestion. Resulting image is `lx2160acex7_2000_700_2900_20_5_2-37d25bc.img` However, upon connecting the 40G transceiver to the qsfp28 port, I get ```auto root@localhost:~# [1390.338518] sfp qsfp-0: EEPROM base structure checksum failure: 0x13 != 0x00 [1390.345581] sfp EE: 00000000: 0d 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [1390.354302] sfp EE: 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [1390.363008] sfp EE: 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [1390.371710] sfp EE: 00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [1390.380411] sfp EE: 00000040: 18 b3 87 40 14 a3 ff ff 80 bd e8 14 00 80 ff ff ...@............ [1390.389111] sfp EE: 00000050: 68 8a 5b 40 14 a3 ff ff 90 bd e8 14 00 80 ff ff h.[@............ ``` I tried with different cables, I get the same error. Do you have any clue why I’m getting this? Thanks much! Karim ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [November 23, 2024, 6:47am UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/6 "2024-11-23T06:47:28Z")
> [@karim96](#): > > `EEPROM base structure checksum failure: 0x13 != 0x00` can you run ethtool -m on that interface and post the output? ---
**Author:** ![karim96](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@karim96](https://community.solid-run.com/u/karim96)\ **Post date:** [November 25, 2024, 8:48pm UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/7 "2024-11-25T20:48:43Z")
Hi @jnettlet No luck so far! On the Arm box, I’m getting this ```auto root@localhost:~# sudo ethtool -m eth1 Cannot get module EEPROM information: Operation not supported ``` dmesg from sfp module on the Arm box ```auto root@localhost:~# sudo dmesg | grep sfp [3.531590] sfp qsfp-0: Host maximum power 8.0W [3.536222] sfp qsfp-0: No tx_disable pin: SFP modules will always be emitting. [3.875370] sfp qsfp-0: EEPROM base structure checksum failure: 0x13 != 0x00 [3.886144] sfp EE: 00000000: 0d 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [3.886147] sfp EE: 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [3.900831] sfp EE: 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [3.900833] sfp EE: 00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [3.911346] sfp EE: 00000040: 18 b3 67 90 d3 c6 ff ff 80 3d 9b 11 00 80 ff ff ..g......=...... [3.911349] sfp EE: 00000050: 68 8a 3b 90 d3 c6 ff ff 90 3d 9b 11 00 80 ff ff h.;......=...... [5.988225] sfp sfp-0: Host maximum power 2.0W [5.992807] sfp sfp-0: No tx_disable pin: SFP modules will always be emitting. [6.004493] sfp sfp-1: Host maximum power 2.0W [6.009066] sfp sfp-1: No tx_disable pin: SFP modules will always be emitting. [6.020739] sfp sfp-2: Host maximum power 2.0W [6.025306] sfp sfp-2: No tx_disable pin: SFP modules will always be emitting. [6.036954] sfp sfp-3: Host maximum power 2.0W [6.041526] sfp sfp-3: No tx_disable pin: SFP modules will always be emitting. [274.693147] sfp qsfp-0: EEPROM base structure checksum failure: 0x13 != 0x00 [274.700220] sfp EE: 00000000: 0d 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ``` On the bigger machine, I have a Mellanox Connect X3 and `ethtool -m` returns ```auto $ sudo ethtool -m ens31 [12/17787] Identifier : 0x0d (QSFP+) Extended identifier : 0x10 Extended identifier description : 1.5W max. Power consumption Extended identifier description : No CDR in TX, No CDR in RX Extended identifier description : High Power Class (> 3.5 W) not enabled Power set : On Power override : On Connector : 0x23 (No separable connector) Transceiver codes : 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Transceiver type : 40G Ethernet: 40G Base-CR4 Encoding : 0x05 (64B/66B) BR, Nominal : 10300Mbps Rate identifier : 0x00 Length (SMF,km) : 0km Length (OM3 50um) : 0m Length (OM2 50um) : 0m Length (OM1 62.5um) : 0m Length (Copper or Active cable) : 2m Transmitter technology : 0xa0 (Copper cable unequalized) Attenuation at 2.5GHz : 4db Attenuation at 5.0GHz : 6db Attenuation at 7.0GHz : 0db Attenuation at 12.9GHz : 0db Vendor name : FS Vendor OUI : 00:09:3a Vendor PN : QSFP-PC02 Vendor rev : 03 Vendor SN : G1912189187-2 Date code : 20191227 Revision Compliance : Revision not specified Module temperature : 0.00 degrees C / 32.00 degrees F Module voltage : 0.0000 V ``` ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [November 28, 2024, 5:20am UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/8 "2024-11-28T05:20:37Z")
I am going to have to take a look at the device-tree fixups done for the SERDES configuration. ---
**Author:** ![karim96](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@karim96](https://community.solid-run.com/u/karim96)\ **Post date:** [December 2, 2024, 3:42pm UTC](https://community.solid-run.com/t/choosing-the-correct-target-for-runme-sh-to-build-the-image-for-clearfog-lx2160a/927/9 "2024-12-02T15:42:28Z")
Hi @jnettlet how can I help with that?