回覆: Only one network interface of three NF CA5351 Current Amplifiers is accessible

[Chiang, Liang-Chih [江良志] via Tech-talk <tech-talk at aps.anl.gov>]

Hi,

Reply from the device vendor:

> New firmware Ver1.20 (2022/1) fixed LAN communication failure.
> When the LAN communication is performed, the unique number (serial
> MAC address becomes the initial value.
> If there is only one CA5351 on the line, you will not notice it, but if you
> CA5351, you will not be able to control it.

The bug is that the MAC address becomes the initial value.

Best regards.

LiangChih Chiang

NSRRC Beamline group

email: chiang.lc at nsrrc.org.tw

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寄件者: Chiang, Liang-Chih [江良志]
寄件日期: 2022年3月29日 上午 08:27
收件者: tech-talk-bounces at aps.anl.gov
主旨: 回覆: Only one network interface of three NF CA5351 Current Amplifiers is accessible

 

Some updates:

I checked the MAC addresses of the 3 devices,

they are different in network setting menu and

they are different seen by another computer.

I asked device vendor the problem,

well, they would send me the new firmware to update the device.

Best regards.

LiangChih Chiang

NSRRC Beamline group

email: chiang.lc at nsrrc.org.tw

Best regards.

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寄件者: Tech-talk <tech-talk-bounces at aps.anl.gov> 代表 Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
寄件日期: 2022年3月23日 上午 12:10
收件者: EPICS Tech Talk
主旨: Re: Only one network interface of three NF CA5351 Current Amplifiers is accessible

 

A recent experience - might be related or not:

We have seen similarly weird behavior when (due to a firmware bug) multiple devices of the same type were using the same MAC address. IP addresses were statically configured and correct.

The switch (that the devices were connected to) was updating its arp tables every ~10sec, and we saw StreamDevice connections timing out then reconnecting to a different device.

Of course, any tests with a single device were always working just fine.

Cheers,
~Ralph