Argentina joined 5 months ago
6 questions
15 comments
ISP field engineer from Córdoba. Mostly Dell and HPE.
A QSFP28 100 Gb DAC supplied by Supermicro linked two Dell S5248F-ON (OS10 10.4.3.6) switches fine, but between the Dell and a Supermicro XEM-100 the port showed up, line protocol is down. Multiple FEC and negotiation combinations were tried. The thread received no answers. Hardware involved: Dell…
On a Mellanox SN2410 (MLNX-OS 3.6.4112) a 100G port connected to a Chelsio adapter through a 2 m unequalised QSFP copper cable would not link when FEC was disabled; no HSS lane signal was detected on the adapter side. The poster required FEC-off operaation and asked whether the switch supports it…
A Dell-branded Intel X520-DA2 with Flypro 10GBASE-T SFP+ modules showed no carrier (or no interface at all) on Debian and on FreeBSD-based OPNsense because the card rejects unapproved modules. The post collects the per-OS fixes and the permanent EEPROM approach. Hardware involved: Dell-branded…
We pick up a 1GE carrier handoff on a Ciena 3930 and I am putting together a spares kit for it. The module quoted for that circuit is XCVR-A10Y31, a 1000BASE-LX/LC part: 1310 nm, 10 km single mode. Nothing exotic about it, and I have a drawer of generic optics with exactly that specification…
A Dell R720 with the integrated i350/X520 daughter card ran Proxmox VE; Cisco-branded 10G multimode LC SFP+ modules that worked elsewhere were rejected as unsupported. Adding options ixgbe allowunsupportedsfp=1 to the module options had no visible effect. Respondents walked through GRUB kernel…
Two Cisco Nexus 93108TC-FX3P switches on NX-OS 9.3(11) are connected with genuine QSFP-100G-CU1M DACs but the link never comes up. The compatibility matrix says the cable is supported from NX-OS 9.3.5. The port config is a plain 'switchport mode trunk' / 'no shutdown', and 'show interface eth1/54…