India joined 9 months ago
8 questions
20 comments
Homelab enthusiast from Pune. Mostly MikroTik and Ubiquiti.
With auto-negotiation on, CRS317 and CRS326 SFP+ interfaces ran at 10G; with auto-negotiation=no, speed=10Gbps and full-duplex=yes the log still reported link up (speed 1G, full duplex) regardless of the advertise settings. On a CCR1009 the same configuration produced no-link instead, showing that…
I look after a mixed Zyxel estate on one site and I am putting together a vrey basic optical health check for the fibre uplinks: temperature and Rx power per port, so I can see a link degrading before the users report it. What is involved: Zyxel GS1910, older access switch with SFP uplinks Zyxel…
Small office rack: there is a 40G card in the file server and a switch with spare uplink ports, so instead of buying another box I tried to hang the server straight off the switch. Both ends see the cable, the link never comes up. Huawei S6730-H24X6C, QSFP28 uplink ports QNAP LAN-40G2SF-MLX in the…
We poll a handful of Nokia 7705 aggregation routers in LibreNMS and I wanted optical DOM off them for the usual reason - catching a span going soft before the customer notices. Discovery never finishes on those devices. Nokia 7705 running TiMOS LibreNMS 26.3.1 Ordinary single-lane 1G SFPs in the…
Our inventory tooling walks every switch and records vendor, part number and serial for each pluggable straight out of the SONiC CLI. It works everywhere except one batch of QSFP-DD modules, where the identity fields come back mangled and the asset database fills up with junk. Switch: SONiC…
We pulled a pair of G8124E out of a decommissioned rack and I am rebuilding them as the aggregation layer for an internal test environment. Budget for branded optics is zero, so everything goes in with generic 10G SR modules of the type we already run elsewhere. Lenovo RackSwitch G8124E, ex-IBM…
I inherited a Sun Network 10GbE Switch 72p with a couple of legacy boxes hanging off it that will never do more than a gigabit. The plan was to drop a 1G capable module into one of the SFP+ cages and be done with it. Sun Network 10GbE Switch 72p, SEFOS CLI over the serial console x2129a dual-rate…
The poster needed to connect stacked Aruba 6300F (JL665A) switches to a 6300M core (JL658A) at 10 Gbps over more than 3 m. J9283D 3 m DACs worked for short runs and the older 3810/2930 platforms supported a 7 m J9285D cable, but that cable is not listed for the 6300. The question was whether the 5…