Link became down at night

Products ePMP
1

hi,

Can you help me. I am using epmp1000 connectorized radio. Older firmware version was 2.5.2 last 14/01/2016 i upgraded to 2.6. Link is in TDD PTP mode. Link distance 28Km. Anteena 29dB.

Problem arises after upgrading firmware, it goes down every night, after 20:00 RSSI starting to increase and it became down lastly. I checked here is no interfearance issue.

Please note that here is now winter session in Bangladesh and outside temperature 16 to 25 degree celcius

Can you help me?

2
@airnet wrote:

hi,

Can you help me. I am using epmp1000 connectorized radio. Older firmware version was 2.5.2 last 14/01/2016 i upgraded to 2.6. Link is in TDD PTP mode. Link distance 28Km. Anteena 29dB.

Problem arises after upgrading firmware, it goes down every night, after 20:00 RSSI starting to increase and it became down lastly. I checked here is no interfearance issue.

Please note that here is now winter session in Bangladesh and outside temperature 16 to 25 degree celcius

Can you help me?

I am a little confused about the following statement - 

"RSSI starting to increase and it became down lastly"  - What does this mean?

Outside of this, are you essentially seeing the PTP link go down and no traffic passes? With 2.6 release can you login via CLI and type "debug crashlog" and then send the output to us asap? We will know if the units are crashing for some reason. Once we verify, we will send you a fix.

Sakid

1 Like
3

I sent screenshoots when link was up, screenshoots are  for better understand that when link up is running good condition. after 20:00 its rsl increasing every night automatically and goes down. rssi  dramatically increase from 62 to near 83.

I will send your requirement ASAP

4

crashlog not found in Ap.

Same in SM

5

Are you saying the RSSI is decreasing (ie, going from -62 to -83, and then finally dropping link) as the night progresses?  Are you graphing the RSSI?  Is it happening on both the SM and AP?  If so, you have some kind of obstruction moving into the path of the link at night.

6
@airnet wrote:

I sent screenshoots when link was up, screenshoots are  for better understand that when link up is running good condition. after 20:00 its rsl increasing every night automatically and goes down. rssi  dramatically increase from 62 to near 83.

I will send your requirement ASAP

One other question. This is a 28km link so its pretty long. Is it going over any bodies of water by any chance? 

Have you used link planner to plan the link? if not, I highly recommend plotting the link in our link planner tool and take into account possible reflections over water and/or ducting effect. Please see the attached deck for a little more about this topic. 

Sakid

7

Fog is issue?

8

On such a long distance most probably it is...

9
@airnet wrote:
Fog is issue?

Did you have a chance to go through the deck? Is your link over water?


Sakid