qsfpwolf

United States joined 2 months ago 2 questions 13 comments

Network engineer from Austin. Mostly Arista and Mellanox.

Questions

0votes

0comments

89views

CSS326-24G-2S+ and Intel 82599 NIC fail to link over an S+DA0001 DAC; switch-to-switch DAC only reaches 1G

With a CSS326-24G-2S+ (SwOS 2.6) and a server with an Intel 82599 card, two different S+DA0001 DACs and two Intel cards never linked; two CSS326 switches connected by DAC only achieved 1 Gbps. A later reader on SwOS 2.12 with an 82599 reported the same. No solution was posted. Hardware involved…

qsfpwolf US asked 8 days ago

3votes

3comments

96views

ethtool -m fails on FS.com XXV710 NIC: "Module EEPROM memory read not supported" and NVM not updatable

On Ubuntu 18.04 (kernel 5.4.0, ethtool 5.3, i40e 2.8.20-k) the poster used 25G XXV710-based NICs bought from FS.com (FS part XXV710AM2-F2, Intel XXV710 chipset). Link and error-free wire-speed traffic worked, but reading a transceiver's DMI data with sudo ethtool -m enp4s0f0 failed with "Cannot get…

DDM / DOM EEPROM ethtool-m intel-xxv710 nvm-update

qsfpwolf US asked 29 days ago