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maxpower
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Apr 22, 2019 1:42 pm

BTW, how do u guys can confirm that there no port flapping under SwOS? I didnt find any log section in SwOS web interface...
 
coelliale
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Apr 22, 2019 2:12 pm

You have to check it on 328 side, looking for disconnections or rstp recalculation
 
maxpower
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Apr 30, 2019 11:30 am

So seems like the problem is with CRS317-1G-16S+
We have one CRS317-1G-16S+ in center and three CRS317-1G-16S+ at remote ends, after 6 days from reboot we got port flapping - but not on all ports, we tried to change SFP+ modules, cables but no sense. After we changed from RoOS to SwOS on central CRS317-1G-16S+ log files of the remote CRS317-1G-16S+ (that are still running RoOS) are showing no port flapping after more than 8 days!
 
keefe007
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Apr 30, 2019 7:30 pm

I have issues on the CRS328 connecting to a Siklu.
 
coelliale
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Thu May 02, 2019 8:14 pm

I can confirm that the problem appear also with 2 CRS317 connected trought mk DAC.
PLEASE MIKROTIK, GIVE US SUPPORT!!!!!!!!!
 
Zito
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 15, 2019 3:51 pm

I confirm the problem with the CRS328 and CRS317 connection.
The problem is partially solved by the change of the CRS317 system to SwOS. But still Rx FCS Errors occur on the 10G interfaces.
[Ticket#2019051422003403]
 
sebg
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 15, 2019 4:06 pm

Mikrotik, this issue has almost 6 months !!

It seems that Mikrotik acknowledges the problem, my reseller confirmed this point, you should be able to prioritize this issue as it affects core features : we're unable to deliver 10G connectivity !!
 
maxpower
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Fri May 17, 2019 5:47 pm

The problem is partially solved by the change of the CRS317 system to SwOS. But still Rx FCS Errors occur on the 10G interfaces.
We can confirm the same, but not on all interfaces, those that were stable on RoOS have only 2 Errors.
 
coelliale
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Fri May 17, 2019 6:03 pm

Mikrotik support, please WAKE UP!!
Customers are angry and whants different brand hardware!
 
Zito
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 22, 2019 11:02 am

*) crs3xx - improved switch-chip resource allocation on CRS326, CRS328, CRS305;
..but still problem not fixed.
1.PNG
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maxpower
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Fri May 24, 2019 8:02 pm

Can anybody try to add attenuators on problematic links? Would it change anything?
 
llag
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Sat May 25, 2019 6:53 pm

Can anybody try to add attenuators on problematic links? Would it change anything?
That seems unlikely as I have the same link flapping on my DAC links btween the CRS328 and CRS317 on 10G links. Something seems to be wrong (software or hardware??), but Mikrotik does not seem to be interested...
 
maxpower
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Sun May 26, 2019 7:43 pm

Does the DAC link have Rx FCS Errors also?
 
Zito
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon May 27, 2019 11:42 am

Does the DAC link have Rx FCS Errors also?
Yes
This is the setup on my desk. It does nothing, only connections between switches.
3.PNG
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nicoh
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon May 27, 2019 6:05 pm

We are having this issue as well between two CRS317-1G-16S+ in our datacenter. We wrote an E-Mail to MikroTik Support on the 18th of May.

There has not been any reaction since*.

EDIT: *except for the automated reply message.
 
gentrice
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue May 28, 2019 4:16 pm

Our client has 200+ units installed in different locations, now even in 1G is not stable.
We have been pushed for months, mikrotik nothing to say.
Very bad service, client try to use Ubq to replace all CRS328.
I am thinking about it too, maybe we should close the distribution with Mikrotik.
 
coelliale
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 29, 2019 8:10 am

Very bad service, client try to use Ubq to replace all CRS328.
Hi gentrice, we are angry too, but the problem we are talking here is on crs317.. what kind of problem do you have on crs328?
 
nicoh
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 29, 2019 12:33 pm

There has not been any reaction since*.
We received an answer that MikroTik is aware of this issue and is working on a solution.
 
andersa
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 29, 2019 12:39 pm

Have anyone gotten any time estimates on when flapgate is beeing fixed?
 
coelliale
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed May 29, 2019 2:05 pm

new reply by mk support:
We are working on this problem, it could take up to a couple of weeks, to find a proper solution and test it.
we hope it...
 
nicoh
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 05, 2019 11:21 am

Hi gentrice, we are angry too, but the problem we are talking here is on crs317.. what kind of problem do you have on crs328?
We were able to reproduce this issue on CRS328-24P-4S+ connected via SFP+ DAC to a CRS317-1G-16S+. We tested the following scenarios:

.) change SFP+ port on CRS328 -> port keeps flapping
.) change SFP+ port on CRS317 -> port keeps flapping
.) take a freshly delivered CRS317 connect it to the CRS328 -> port keeps flapping
.) take different DAC -> port keeps flapping

Turning off Auto Negotiation and pinning it on 10Gbps (tick the radiobutton under Interfaces->Ethernet) on both CRS results in a stable 1Gbps link.

The setup firmwares and Package Versions:

CRS328-24P-4S+: 6.43.12 (stable), Firmware: 6.42.5 (Factory)
CRS317-1G-16S+: 6.44.3 (stable), Firmware: 6.44.3, Factory Firmware: 6.42.11

We added this information to the ticket we have opened.

EDIT: We updated the CRS328-24P-4S+ to 6.44.3 (Firmware & Packages) -> port keeps flapping
Last edited by nicoh on Thu Jun 06, 2019 10:44 am, edited 1 time in total.
 
SX1
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 05, 2019 4:36 pm

In our scenario we needed to connect CCR1036-8G-2S+ (ROS 6.44.1) to CRS328-4C-20S-4S+ (SwitchOS 2.9) using Mikrotik SFP+ DAC 1m. We got 10G FDX connection, but it was always unstable. We had the following troubles:
  • 10G link flapping, sometimes, when it wants)
  • After a few hours of good working tagged traffic between CCR1036-8G-2S+ and CRS328-4C-20S-4S+ begun to drop. Connections begun to close one by one, until we reboot CRS. Than it works good again, but for a few hours only. After that we seen packet loss again.
  • If we tried to change any SFP+ settings like auto negotiation or set manual 1G speed, link goes down after applying and not became up. Link became up only if we reboot CRS or physically replug SFP+ DAC. And many other port settings in SwitchOS has the same bug - not working without reboot. DHCP client starts to work only after reboot too.
I think that's enough. Now we definitely completely refuse to work with mikrotik switch. It has too many unsolvable problems.
Bcause if we tell our customers that they need to wait a few weeks/months/years without Internet connection, until Mikrotik fix it, they will simply connect to another provider, and our business will go bankrupt.
 
keefe007
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Jun 10, 2019 3:12 am

What's the status on this Mikrotik?
 
K0IBM
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Jun 10, 2019 4:42 am

Any progress on this Mikrotik? It has been 6 months with no fix. Could we have an update and a plan to a fix?
 
hapi
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Jun 10, 2019 9:49 am

do not use DAC.
 
sebg
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jun 11, 2019 11:58 am

do not use DAC.
this issue also happens with mikrotik SFP+ and fibers
 
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kosyot
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jun 11, 2019 2:34 pm

I can confirm that
there is the same problem on :
CSS326-24G-2S+ with SwOS 2.9
Any SFP+ device connected to port EXCEPT connection to CRS317-1G-16S+ with SwOS 2.7 (with any SFP+ optic module and DAC working as required)


there in not problem at all on:
CRS317-1G-16S+ with SwOS 2.7 (we are unable to upgrade to 2.8 or 2.9 because switch stops to work after 10-15 mins, but you can find this on forum as well)
many switches with many different modules and vendors SFP+s, DACs, S+RJ10
 
nicoh
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jun 11, 2019 11:55 pm

Today we started to request the replacement of flapping CRS328, where we were able to systematically reproduce it, at our distributor.
 
ilkogd
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 12, 2019 10:20 am

Hello. I need to buy two 24 port switches and I have to choose between CRS326 and second hand Cisco 2960G, the price is the same. If I take CRS326 it will be used with RouterOS for access switch. From what I read in forum, SwOS is not ready for "in production" setups and this is the reason to choose CRS326 instead of CSS326.

My question is - if I use only 100Mbps and 1000Mbps (random mix of ports, PCs, VoIP phones etc.) connections and not 10G connections, the problem with port flapping will be present or not?
 
GuJack20
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 12, 2019 10:31 am

Hello. I need to buy two 24 port switches and I have to choose between CRS326 and second hand Cisco 2960G, the price is the same. If I take CRS326 it will be used with RouterOS for access switch. From what I read in forum, SwOS is not ready for "in production" setups and this is the reason to choose CRS326 instead of CSS326.

My question is - if I use only 100Mbps and 1000Mbps (random mix of ports, PCs, VoIP phones etc.) connections and not 10G connections, the problem with port flapping will be present or not?
According to all posters here, the problem presents itself only in connection with CRS317 and 10G SFP+. So it will not happen to your setup.
--Do you remember that guy who gave up? Neither does anybody else!
 
ilkogd
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 12, 2019 11:02 am

According to all posters here, the problem presents itself only in connection with CRS317 and 10G SFP+. So it will not happen to your setup.
I think the same GuJack20. Do you have CRS326 in production? If you have, what is your opinion for the switch? Somebody else do you have CRS326 in production running RouterOS?
 
nicoh
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 12, 2019 11:59 am

I think the same GuJack20. Do you have CRS326 in production? If you have, what is your opinion for the switch? Somebody else do you have CRS326 in production running RouterOS?
Hi,
please open or write in a thread/section where your question is addressed. This thread is about a severe port flapping issue on CRS328 and CRS317 as the title reflects.
Thanks,
nh

EDIT: corrected a typo of product names.
 
ilkogd
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 12, 2019 12:56 pm

Hi,
please open or write in a thread/section where your question is addressed. This thread is about a severe port flapping issue on CRS328 and CRS317 as the title reflects.
Thanks,
nh

EDIT: corrected a typo of product names.
I'm sorry if this is mistake. I posted here because CRS328 is the same as CRS326 but with PoE. If moderators want they can delete my posts.
 
Dekado
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Jun 17, 2019 1:44 am

CRS328 to HP DL380 10gbit direct connection, port flapping exists.
so this it not mikrotik-to-core or mikrotik-to-mikrotik connection issue, something wrong in hardware design, I guess.
 
nmt1900
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jun 26, 2019 2:50 pm

Same problem appeared suddenly after months of uptime. Two links between CRS326 and CRS317 (two of both devices) - one works perfectly and other link is flooding logs and causing packet loss. All troubleshooting attempts lead to conclusion, that CRS317 is the source of the problem - when we cross-connected the uplinks (leading to CRS326s), then port flapping stayed on same CRS317. Changing patches and GBIC's did nothing at all. Changing the uplink to other unused port on CRS317 did not help either. Links to other devices were fine on that same switch.

Upgrades or downgrades from 6.43.16 (same version on all devices) had no effect either.

One other detail could not be unnoticed - link downs had made their way up to tomorrow already :)

Screenshot (602).png
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Last edited by nmt1900 on Tue Jul 02, 2019 12:40 pm, edited 2 times in total.
 
nmt1900
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Fri Jun 28, 2019 6:42 pm

Now we did one test with the problematic link - we converted it to 10GbE with CAT7 and pair of RJ-10 modules. For more than hour of heavy load there was absolutely no link downs or any packet loss - so this is not likely related to topology issues etc. When we connected ports with fiber as before, all problems were back.

P. S. RJ-10 modules behaved differently on different hardware - everything was OK on CRS317, but module on CRS326 got quickly very hot (almost 90°C)...
 
roggles
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 02, 2019 10:50 am

Good Morning,

has anyone check this behaivour with the new version 6.45.1?

Regards
 
nmt1900
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 02, 2019 12:38 pm

It is bad, when things get broken, but it is not better, when they suddenly get "cured" by itself.

My problem just suddenly disappeared by itself. Link has been up from friday afternoon and all packet loss has also disappeared. Nobody has done anything to this link or the devices, nobody has even been in the server room, but port flapping just ended and now everything is fine for fourth day in the row. I have not been able to find any outside factors that could have caused this change...

It is possible to understand, why this kind of bugs can be hard to chase down - these kind of problems can take a very long time to reproduce...
 
rmaDK
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Thu Jul 04, 2019 9:51 am

On the latest version 6.45.1, the problem is still exist.
The bundle ( CRS328-24P-4S+ and CRS317-1G-16S+ ) constantly (~ 5-7 minutes) flapping occurs

Mikrotik, you can finally pay attention to the problem !!!
Several tickets were created in the support, and not one received an answer on this issue.

Many people suffer from this problem for many months.
And there is still no official response.

If necessary, I can provide access to the equipment.
But start doing something already!
 
llag
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Thu Jul 04, 2019 4:48 pm

I have the same combination: CRS328-24P-4S+ and CRS317-1G-16S+. Yesterday I installed 6.45.1. Since that time the number of port flaps increased dramatically (from once every few days to 70 during the last 24 hours!)
The CRS328 reports:
Rx Error Events 2335

The CRS317 reports:
Rx FCS Error 2389
Rx Error Events 2650

What is happening here? Was something changed in 6.45.1 that affects this?
 
michaels
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Fri Jul 05, 2019 1:01 pm

First, I love MikroTik products and RouterOS.

It was a big mistake to buy the combination (1x CRS317-1G-16S+ and 2x CRS328-4C-20S-4S+).
The expectation was that it should work fine, because it goes from the same manufacturer to the same manufacturer :)


10G to 10G Fiber SFP+ Tests with RouterOS 6.45.1

from CRS317-1G-16S+ to CRS328-4C-20S-4S+ flapping all day, about every 5min flapping
from CRS317-1G-16S+ to CCR1072-1G-8S+, works fine - no flapping
from CRS317-1G-16S+ to C4500X-32, works fine - no flapping

from CRS328-4C-20S-4S+ to CRS328-4C-20S-4S+, works fine - no flapping
from CRS328-4C-20S-4S+ to CCR1072-1G-8S+, works fine - no flapping
from CRS328-4C-20S-4S+ to C4500X-32, works fine -no flapping

Has anyone already found a solution that works with RouterOS.
 
llag
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Fri Jul 05, 2019 9:09 pm

It is funny to see that in your case it is the combination CRS317-1G-16S+ to CRS328-4C-20S-4S+ that is flapping too. I have some links from the CRS317 to server that work great. The same applies to other links on the CRS328. One would guess that Mikrotik would be able to track the problem easily as it occurs between these specific Mikrotik products?
 
nmt1900
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Mon Jul 08, 2019 10:28 pm

It's might not be always like that. My problem lasted for weeks, then it suddenly disappeared and now emerged again after 10 days. Now it has been flapping again for a second day in the row. This kind of problems can take a lot of time if there's no ways to "accelerate" the process...
 
becs
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 09, 2019 2:11 pm

Our investigation has revealed that there might be a SFP+ compatibility issue with specific CRS317-1G-16S+ units when connected to other CRS3xx devices resulting in random link downs. Please, contact MikroTik support if you experience similar issue, we will verify it and arrange a repair if necessary.
 
drbunsen
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 09, 2019 3:40 pm

Could you be more precise? Is there a way to identify the cause and what would be done during repair?
Think about the folks which are running these switches now without flapping ports, but might run into problems as soon as CRS3xx are installed.
We would like to know about the issue before the installation if possible.
 
roggles
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 09, 2019 4:01 pm

Hello,

i can't belive that anyone else have a working connection between the CRS317-1G-16S+ and the CRS3xx devices.
We have three CRS317-1G-16S+ and over 10 CRS328-24P-4S+RM and no combination works without flapping.
All of them are updated to 6.45.1. ( firmware also! ) and we used original Mikrotik DAC Cables.

For Mikrotik it would be so easy to test and confirm this behaviour. Especially because it runs better with Switch OS!
I hoped for so long that Mikrotik fix this, i won't send this devices back, but slowly i have no more option.

Many people contact already the support and became no help since months...

so your (becs) answer is no help at all
 
nmt1900
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 09, 2019 4:10 pm

Our investigation has revealed that there might be a SFP+ compatibility issue with specific CRS317-1G-16S+ units when connected to other CRS3xx devices resulting in random link downs. Please, contact MikroTik support if you experience similar issue, we will verify it and arrange a repair if necessary.
Is there something hardware specific related to that - in a way that some devices might not be affected at all? I have one 317 with problem while other has been without problems...
 
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kosyot
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Tue Jul 09, 2019 7:15 pm

Hahaha
Not well done MikroTik - hardware related problem?
And why when you switch to SwOS there is no such problem, only CRS3017 with RouterOS?
Same hardware - different behavior = simply software bug!
 
llag
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Wed Jul 10, 2019 11:28 pm

Our investigation has revealed that there might be a SFP+ compatibility issue with specific CRS317-1G-16S+ units when connected to other CRS3xx devices resulting in random link downs. Please, contact MikroTik support if you experience similar issue, we will verify it and arrange a repair if necessary.
The worst problems with port flapping (more that 70 per day) after the upgrade to 6.45.1 have been resolved after another reboot of the CRS317, but I still see port flaps (1 per day??). I guess that the issues I noticed where my UNMS monitoring the network often reports nodes not responding and returning after 1 -3 minutes and frequent drops of the internet radio streams are related too (no proof of that though).
I reported my case to support (Ticket#2019071022007154). Let's see what comes out of this
 
michaels
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Re: Severe port flapping on CRS328-24P-4S+ and CRS317-1G-16S+

Thu Jul 11, 2019 10:00 am

CRS317 and CRS328 would be a great hardware combination and ideal for FTTX deployments.
I hope that the error can be corrected with a software update.

Both devices work great (in my case), if they are not connected to each other.

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