Cannot use 10GBase-SR GBIC on EdgeCore AS5712-54X

[cr2025x1]

Symptom: Cannot link to other machines via SFP+ 10GBase-SR GBICs from EdgeCore AS5712-54X.
Used Dell genuine GBIC with LC connector. (Interface Ethernet1)
Checked with other GBICs but no luck.
Fiber cable and GBIC are confirmed to be OK from other machines.
On contrast, Dell Copper SFP Cable works fine. (Interface Ethernet0)
Using SONiC-OS-HEAD.440-dirty-20171226.091430.
SONiC-OS-HEAD.434-dirty-20171220.093901 showed the same issue.

sonic_dump_switch1_20171227_063912.tar.gz

[pollyhsu2git]

@cr2025x1, thanks for your report~ The Fiber cable support is a TO-DO item scheduled on the way~

[cr2025x1]

Thank you for the quick reply. May I know the estimated time it will be supported?

[pollyhsu2git]

@cr2025x1, please help to try it again after changing the interface type as SR~ The following command is for you to change the interface type as SR
#####
$bcmcmd "port xe interface=sr"

[cr2025x1]

Thank you for your response. I tried as you said, but I believe the interface still does not establish any link.

However, I think the switch somewhat detects the 10GBase-SR GBIC. Before that command, when I plugging the GBIC to a port, the LED indicating the port was still turned off. But after that command, the green LED is on when the GBIC is plugged.

sonic_dump_switch1_20180126_033226.tar.gz

[pollyhsu2git]

@cr2025x1, please try the following utility to enable the TX signal
#####
"Usage: accton_as5712_util.py set sfp 1-54 {0|1}" to set sfp# tx_disable
$ accton_as5712_util.py set sfp 1 0
#####
Enable the TX signal (0) of the front port 1 (1)

[cr2025x1]

The ping test finally succeeded. Thank you. I will keep on testing further, and report again if I see any other problem during the tests.

sonic_dump_switch1_20180126_083332.tar.gz

[pollyhsu2git]

@cr2025x1, glad to hear that it helped~

[cr2025x1]

I've tested VLAN interfaces with an address assigned, tagged/untagged VLAN switching. No problem occurred so far. I'm just happy to see them work, but I believe it would be even much better if they just work without any command needed.

[pollyhsu2git]

@cr2025x1, ideally, to support different types of transceivers, SONiC SHOULD have the transceiver type hook upon the 10G port present for the device manufacturer to configure specific setting (e.g. Enable TX signal upon the Fiber transceiver type) accordingly. Currently, there is ONLY such hook support for the front port LED control.

[vifino]

Hello.
Is there a better fix for this now?

I have to run this in order to use the SR optics:

echo 0 | sudo tee /sys/bus/i2c/drivers/as5712_54x_cpld/*/module_tx_disable_*