↑↓ navigate · enter open · esc close
When a fabric link flaps or runs at the wrong width, the answer is usually in the optics. How to read PCIe and fabric port state, per-lane signal quality and cable EEPROM with the NVIDIA firmware tools.
What RoCE actually needs from the network, how PFC and ECN divide the work, and how the lossless and lossy modes are configured and verified on Cumulus Linux.
An office network with no IPv6 deployment lost web access. The cause was a personal router advertising IPv6 — and a DHCP snooping configuration whose scope did not cover it.