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Dell OS10 Factory Reset & Default Gateway Recovery

Dell OS10 Factory Reset & Default Gateway Recovery

Reset a Dell PowerSwitch OS10 back to factory defaults and bring the management default gateway back up, with backup, reset and verification steps.

admin admin 2026-10-02
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Cat6A Permanent Link Certification and TIA-568

Cat6A Permanent Link Certification and TIA-568

How to certify Cat6A copper cabling to ANSI/TIA-568: permanent link tests, insertion loss, NEXT, PS ACR-F, return loss and alien crosstalk explained.

admin admin 2026-09-26
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PAM4 vs NRZ: Modulation Behind 100G, 400G and 800G Optics

PAM4 vs NRZ: Modulation Behind 100G, 400G and 800G Optics

PAM4 vs NRZ explained for 100G, 400G and 800G optics: bits per symbol, the 9.5 dB SNR penalty, why KP4 FEC is mandatory, TDECQ, DSP and link troublesh

admin admin 2026-09-09
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Linux ip neigh: Manage the ARP Table Like a Pro

Linux ip neigh: Manage the ARP Table Like a Pro

Master the Linux neighbor (ARP) table with ip neigh: show, add, delete and flush entries, read NUD states like stale and reachable, and fix failed res

admin admin 2026-09-07
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SFP vs SFP+ vs SFP28 vs QSFP28: Types and Compatibility

SFP vs SFP+ vs SFP28 vs QSFP28: Types and Compatibility

SFP, SFP+, SFP28, QSFP+ and QSFP28 compared: lane counts, speeds, standards, vendor coding, DAC/AOC cables and the port compatibility rules that matte

admin admin 2026-09-06
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