topic Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters in Aerohive Migrated Content

I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

jsaultz — Fri, 25 May 2018 05:16:28 GMT

I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

jsaultz — Fri, 25 May 2018 05:17:14 GMT

Below are the counters

247712919 rx data frames

243548753 rx unicast data frames

3471777 rx multicast data frames

692389 rx broadcast data frames

318301104 rx management frames

407590 rx BAR (Block Ack Request) frames

6468396 rx Retries

2% rx retry rate

478077826 rx CRC errors

45% rx CRC rate

47330 rx frame errors other than CRC

0 hw FIFO overrun

617 decryption failed

0 MIC failure

7986 rx frames dropped

66 frame too short

7920 frame too large

0 frame in other mode

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

erivai — Fri, 25 May 2018 23:26:55 GMT

What is the HiveOs version and AP model?

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

GeorgiaMason — Mon, 28 May 2018 19:53:14 GMT

I posted to the other conversation with the same title, so in case they delete one of them as a duplicate here it is again- What firmware are you using? Some of the 8.x firmware had issues over-reporting interference in some fields, but I think the latest firmware is fine (no issues on my side at least).

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

sderikonja1 — Fri, 01 Jun 2018 03:45:00 GMT

Georgia, Could you please specify what 8.x firmware had reporting issues and what is considered latest firmware? I see 8.3r4 what seems to be newest version number and then there is 8.2r2 that was released after 8.3r4 for both AP230 and AP250.

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

support100 — Mon, 04 Jun 2018 14:36:35 GMT

Hi there,

I was interested in this after looking in to some issues myself recently and noticed that the figures seemed odd. However, if you add up all the rx frames it comes to 1061847451. Take off the rx CRC errors (478077826) and you're left with 583769625. So, divide the errors by the total (478077826 divided by 1061847451) and multiply the result by 100 to get the percent and you get 45. The maths works out by my understanding but I was previously unsure when looking through some counters myself.

I hope that clarifies it for you.

Nathan Walker

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

jsaultz — Mon, 04 Jun 2018 23:14:31 GMT

LAN3 Support,

Thank you for helping. And I see where I went wrong on the math for that one. I used the same method that you laid out above on another AP, and the results do not seem to be correct. Below are the statistics, I took the number of CRC errors 58934 / 207984 = .28*100 = 28%

70436 rx data frames

69932 rx unicast data frames

430 rx multicast data frames

74 rx broadcast data frames

72406 rx management frames

48 rx BAR (Block Ack Request) frames

6160 rx Retries

8% rx retry rate

58934 rx CRC errors

58915 rx CRC errors with no physical error

19% rx CRC rate

0 rx frame errors other than CRC

0 hw FIFO overrun

9 decryption failed

0 MIC failure

0 rx frames dropped

0 frame too short

0 frame too large

0 frame in other mode

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

support100 — Tue, 05 Jun 2018 14:29:07 GMT

No problem James,

By my logic on the previous one, it does appear this one is showing a slightly different figure than I'd expect. I got the same results. Are these APs the same model running the same firmware?

Kind regards

Nathan W

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

jsaultz — Wed, 06 Jun 2018 00:55:38 GMT

LAN3 Support,

The first example was from a AP330 running HiveOS 6.5r9a.194750 , the second example was from a AP230 running HiveOS 7.1r1.142326

Re: I have an AP that is showing 45% RX CRC errors. But the math in the interface counters doesn't seem to make any sense of this. Below are the RX Counters

support100 — Wed, 06 Jun 2018 15:13:49 GMT

Hi James,

I would look at getting your AP230 on to a different firmware version. I've had some experience with issues on version 7. Version 6.5r9a is the version they recommend for the wave 1 access points. Even if this doesn't necessarily fix the stats, it would be worth ruling out and avoiding using this version given my experience in it. Personally, I would get the firmware changed and then check the stats on the 230 afterwards.

Kind regards

Nathan W