# PTP820 RMON Statistics
**URL:** https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373
**Category:** PTP
**Created:** [September 19, 2016, 2:30pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373 "2016-09-19T14:30:18Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@Eric\_Miller](https://community.cambiumnetworks.com/u/Eric_Miller)
#### Post date: [September 19, 2016, 2:30pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/1 "2016-09-19T14:30:18Z")
I have a question regardng the RMON statistics, specifically the "TX/RX length error frame count". We are seeing this counter increase across both the radio and sfp interface, but the counters for jabber, fragment, undersize, oversize and fcs errors, are 0. What specifically is this value tracking?
We are investigating some potential packet loss or service interruption that may or may not be related to a fiber repair on this particular radio ring around the time that the customer is reporting the beginning of issues .
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### Author:  [@Support\_Sanjay1](https://community.cambiumnetworks.com/u/Support_Sanjay1)
#### Post date: [September 20, 2016, 10:08pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/2 "2016-09-20T22:08:17Z")
Hi Eric,
Could you please share the screenshot of the RMON statistics with us so that we can check?
Regards,
Sanjay Kumar.
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### Author:  [@Steve\_Wynne](https://community.cambiumnetworks.com/u/Steve_Wynne)
#### Post date: [December 5, 2016, 7:43pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/3 "2016-12-05T19:43:51Z")
Hi,
I am seeing the same thing on a new link we installed. We would like an explanation of what these error fields refer to, if possible.
820S, 11 GHz, 1+0, Software 8.5.5
- [Black-NCESD-V RMON.jpg](https://d1okf4ta8xniw3.cloudfront.net/original/2X/2/29155904917d1a702b026a98cb587846c79b05fd.jpeg) (124 KB)
- [NCESD-Black-V RMON.jpg](https://d1okf4ta8xniw3.cloudfront.net/original/2X/0/022bf608c6bffb729a42a232cc6e4cd29becb199.jpeg) (115 KB)
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### Author:  [@David\_Hensley](https://community.cambiumnetworks.com/u/David_Hensley)
#### Post date: [December 19, 2016, 4:37pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/4 "2016-12-19T16:37:21Z")
This counter is not representing any sufficient information, we will remove it in one of our future releases.
I hope this helps!
Dave
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### Author:  [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic)
#### Post date: [September 25, 2018, 6:09am UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/5 "2018-09-25T06:09:00Z")
Hello there, I'm resurrecting this post because we're troubleshooting a PTP820 link and are seeing "TX length error frame" counters incrementing. It looks like this counter was never removed as mentioned above. Is this counter something we should be worrying about? Thanks!
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### Author:  [@Tom\_Blumenshine](https://community.cambiumnetworks.com/u/Tom_Blumenshine)
#### Post date: [November 24, 2020, 3:04pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/6 "2020-11-24T15:04:07Z")
David,
I have a technical battle going on that the Motorola Reseller wants to blame on anything other than the VESTA (E911 VoIP) software solution they installed. Can you confirm the Tx/Rx Length Error Frame count indicator does not point to drop packets.
Thanks,
Tom Blumenshine
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### Author:  [@Steve\_Clark](https://community.cambiumnetworks.com/u/Steve_Clark)
#### Post date: [November 30, 2020, 5:07pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/7 "2020-11-30T17:07:32Z")
Hi Tom,
You are correct, the Tx and Rx length error frame counts, do not indicate dropped packets. This statistic will be removed in a future release. For now, it’s safe to ignore it.
Thanks,
Steve
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### Author:  [@lmcginnis](https://community.cambiumnetworks.com/u/lmcginnis)
#### Post date: [October 28, 2021, 9:57pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/8 "2021-10-28T21:57:26Z")
Just bring this topic back around, as it’s a quite a bit later… and still seen in 11.5 firmware.
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### Author:  [@hammer185](https://community.cambiumnetworks.com/u/hammer185)
#### Post date: [December 10, 2025, 10:33pm UTC](https://community.cambiumnetworks.com/t/ptp820-rmon-statistics/47373/9 "2025-12-10T22:33:30Z")
The “RX/TX length error frame count” counters are still in ver 13.1. An explanation of what these represent would be appreciated.from either Cambium or Ceragon.