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  1. DavidWJohnston

    PSA: New builds of older SONiC versions no longer work on the Celestica DX010

    So I just went through a painful process of re-installing SONiC numerous times on my DX010. I wanted to try the newest builds in the pipeline: https://sonic-build.azurewebsites.net/ui/sonic/pipelines New builds work for QSFP28 transceivers but the breakout functionality is broken. The...
  2. DavidWJohnston

    Quantum FC LTO5 Drive - $26 Used Untested

    If they're the same style as mine, you can shuck these from the metal enclosure, add a fan, and power it from a molex drive power cable. https://www.ebay.ca/itm/295733363088
  3. DavidWJohnston

    Overheated Transceiver: KAIAM 100G CWDM4 SM 2xLC

    I thought I'd create a new post about this and share some pics. Due to an accidental fan unplugging, my PCIe cards got extremely hot and ran for an hour before my 100G connection dropped. The transceiver was extremely hot, way beyond normal, and after it cooled it no longer works. Luckily the...
  4. DavidWJohnston

    Canada FS: Another switch - Cisco Nexus 5020 (10G & 4G FC) $250 USD shipped

    FS: Cisco Nexus 5020 N5K C5020B-BF - 40x10G Switch - $250 USD shipping included to USA/Canada - UPS may charge you additional brokerage and customs fees. This is old, heavy, uses lots of power, L2 only, and is loud, and works perfectly! It was my primary homelab switch for many years before I...
  5. DavidWJohnston

    Canada (SOLD): Switches! Dell S6100 (64x40G) $450 && Dell Z9100 (32x100G) $750 (USD; obo)

    I have 2 excellent Dell enterprise switches for sale. Local pickup or buyer pays shipping from Ottawa, ON, Canada. Prefer local sale w/ e-Transfer, but I know it's unlikely. UPS seems to have the best shipping estimates, but you might get dinged with brokerage/import fees. I originally wanted...
  6. DavidWJohnston

    $5 Intel 100G CWDM4 QSFP28

    I bought a few of these earlier today. https://www.ebay.ca/itm/234826973241
  7. DavidWJohnston

    SMB RDMA (RoCEv2) fast only in one direction (Uploading from Client to Server)

    I get amazing SMB-RDMA performance when uploading from my Win11 (Pro for Workstations) client to my Server 2022 VM; 4.4 GB/s... But only 1.1 GB/s downloading from the same server. I see no reason why I shouldn't get at least 3 GB/s in both directions. A clue: When I try an HPE-branded QLogic...
  8. DavidWJohnston

    Inter-VLAN routing pegs Atom CPU to 100% in 100G Celestica Seastone DX010 L3 switch

    Hi everyone, I'm wondering if any fellow homelab architects can shed some light on this. I can also help others with their DX010 configs. I have the 32x100G DX010 switch configured with VLANs in separate VRFs, with static routes for each VLAN pair that I want to talk, and default routes...