ION7650 DOES NOT ALLOW A NETWORK SWITCH TO READ MAC ADDRESS

[rromerog7116]

INTERFASE ION7650 WAS CONNECTED TO A SWITCH AND WAS WORKING FINE, WHEN IT DEPARTMENT CHANGED NETWORK SWITCH NOW INTERFASE ITS OFFLINE. IT REVIEWD AND SWITCH DETECTS THE CONNECTION ON PORT BUT CAN NOT READ THE MAC ADDRESS ON ION7650 NETWORK CARD, SO SWITCH DOES NOT ASSIGN A VLAN FOR COMMUNICATION AND ION7650 NEVER GET ON LINE. IS THERE ANY SPECIAL CONFIGURATION, FIRMWARE OR SPEED THAT COULD FIX THIS COMMUNICATION PROBLEM?. THANK YOU

[Charles_Murison · Accepted solution]

Hello @rromerog7116 ,

In future you may have better response in the future if you post in the forum https://community.se.com/t5/Metering-Power-Quality/bd-p/power-metering for ION7650 questions.

As to your question if the switch is using 802.1x authentication, the ION7650 meter does not support this. When the meter first powers up, the meter will send an ARP message that includes the meter's MAC address. After this time, the default configuration of the meter is to not send out any new packets. If the switch is waiting for the meter to send a packet first switch will wait until meter is power cycled. 

While this could work for a one off any power disruption to the networking would cause switch to wait for MAC address again. One workaround is to make the ION7650 try to establish a connection to something outside the meter's subnet. This would make the meter send ARP to the IP address. One of the easiest ways to do this is configure the meter to modbus master a device that does not exist on the network outside the mask. Have the meter try to read the modbus device once every X minutes as configured in Periodic time module connected to modbus framework. This way meter will send ARP message every X minutes and switch will get meter's MAC address.

Regards,

Charles