Wow, that's quite a bit of work you've put in there! Regarding your questions, the only one I can answer is #3b: "Which FEC mode (CL74 or CL91) should be set on both sides for 25G SR fiber?". This is described in the IEEE 802.3 clause 108. For 25GBAS...
Here is an example of a master node when the ring is complete:Name: ed123a Priority: NormalState: Complete Running: YesEnabled: Yes Mode: MasterPrimary port: 56 Port status: Up Tag status: TaggedSecondary port: 2 Port status: Blocked Tag status: Tagg...
I guess you need to go to an H3C forum for this as you haven't even mentioned the Extreme config.Try ping 10.51.200.253 from the H3C to see if it has its own VLAN up and responding to ping. Do the same on the Extreme side (ping 10.51.200.254 to itsel...
Use "show ports statistics" instead. If the weather station only outputs very few packets, the "show ports util" will not reveal much. Look at the "packets" counters for RX and TX in the "statistics" command instead.
One thing you can try is to change the serial settings. The EXOS line of switches uses "no flow control". I'd say this is the normal config for switches, but it does sound like the flow control may be what is lacking. The most common type of flow con...