This seems like a new thing cause i started experiencing this and all ports go off and on affecting connection stability.
The same goes for CCR2004-16G-2S+, RouterOS v7.12.1. There are random port drops
Hello.
I have the same problem with my: CRS354-48P-4S-2Q+ I have four of them.
All have random port drops.
Changing Cables didn’t help, upgrade and downgrade also.
Switching off Poe also didn’t help either.
Currently they working on verssion: 7.12.1
I’m out of ideas.
Hi everyone.
I want to tell the same story with CCR2004-16G-2S+, RouterOS v7.12.1.
Half of the ethernet ports are simultaneously going down at the same time for a few seconds. That happens with ports that are located on switch 2 inside the Mikrotik. please see the attached image.
- mohand1989, could you check if that happens with all of your ports or if it is related to ports on one internal switch?
- If someone from Mirkotik will read it. I would like some advice on what can I do with it.
Thank you.
I get same issue with my rb5009 on 2.5G port, do you have any idea to fix it
Same issue on a brand new CRS312-4C+8XG-RM aswell, both on 7.13.3 and on 7.13.2. On 7.13.2 it worked fine for about a day before it started happening, on 7.13.3 the links started to go down/up after 5mins.
Experiencing same issue on RB2011UiAS
this problem occurs on almost all existing routers…
How does someone solve it?
I’m having the same problem on hAp ac2
ether1 and ether5 manage to link to 1G, all other ports flap at 100M.
Tried upgrading to latest stable - no difference …
Tried 10 different cables connecting mikrotik’s ports to a gigabit switch - Nope… 100M only.
I’ve found something (probably coincidence)… IF the ports are added via interface list (for example - LAN) to the bridge - they link @ 100M.
If I remove 1 of the interfaces from the LAN group and add it manually to the bridge - links @ 1Gbbs.
But… that again was temporary - managed to run a single speed test, after which the port dropped down to 100M.
And more weird - even though “Partner” advertises 1G, when the port drops to 100M it doesn’t show “Link partner advertising” 1G.
So… final entry.
Turns out the link “downgrade” was caused by … well… device overheating.
Random ports, at random times.
I removed the device (hap ac2) from the enclosure - it behaves a lot better now.
Edit #3 - problem is not from overheating … disassembled the hap ac2, stuck a decent airflow fan on top of the heatsink - no difference.
Using all Cat 6 FTP cables.
Ports link randomly at 1G / 100M / 10M whenever the device feels like f-ing a port from 1G to 100 or 10M.
You unplug port 4, port 3 and 2 go down as well, then whoa 2 of them link at 100M, 1 links at 1G, then the 1G port starts “playing” around trying to “negotiate” link speed 100 times until it settles at 100M.
Port 3 which is directly connected to a tp-link gigabit switch over 1m patch cable (again, ftp cat 6) - in the majority of time negotiates 100M. Tried 5 different cables (utp/ftp cat 5/6) - no difference whatsoever. If I manage to somehow make it link at 1G it doesn’t stay long.
It’s a shit show. The only ports there’s no problem with (are always at 1G) are 1 and 5.
I have the same issues with the same model. i’m not sure, but i suppose it have started after my device stuck and i have to reset it.
[admin@MikroTik] /system/resource> pr
uptime: 1w6d1h46m57s
version: 7.16.1 (stable)
build-time: 2024-10-10 14:03:32
factory-software: 6.44
free-memory: 48.0MiB
total-memory: 128.0MiB
cpu: ARM
cpu-count: 4
cpu-frequency: 448MHz
cpu-load: 1%
free-hdd-space: 308.0KiB
total-hdd-space: 16.0MiB
write-sect-since-reboot: 42342
write-sect-total: 87286
architecture-name: arm
board-name: hAP ac^2
platform: MikroTik
[admin@MikroTik] /system/resource> /log pr where message~"down"
11-17 10:29:53 interface,info ether3 link down
11-17 10:30:15 interface,info ether3 link down
11-17 11:03:25 interface,info ether3 link down
11-17 11:03:46 interface,info ether3 link down
11-17 12:03:58 interface,info ether3 link down
11-17 14:03:23 interface,info ether3 link down
11-19 21:14:33 interface,info ether3 link down
11-19 21:14:42 interface,info ether3 link down
11-19 21:14:49 interface,info ether3 link down
11-20 10:37:24 interface,info ether3 link down
11-20 10:37:27 interface,info ether3 link down
11-20 10:37:35 interface,info ether3 link down
11-20 17:34:33 interface,info ether1 link down
11-20 17:34:33 interface,info ether3 link down
11-20 17:34:33 interface,info ether4 link down
11-20 17:34:35 interface,info ether5 link down
11-20 17:34:43 interface,info ether3 link down
11-20 17:34:46 interface,info ether3 link down
11-20 17:34:49 interface,info ether3 link down
11-20 17:34:53 interface,info ether3 link down
11-20 21:51:39 interface,info ether3 link down
11-20 21:51:50 interface,info ether4 link down
11-20 21:52:05 interface,info ether5 link down
04:49:23 interface,info ether4 link down
04:50:28 interface,info ether4 link down
11:41:01 interface,info ether4 link down
11:41:06 interface,info ether4 link down
13:07:46 interface,info ether4 link down
13:09:49 interface,info ether4 link down
16:06:11 interface,info ether3 link down
16:06:36 interface,info ether3 link down
16:51:33 interface,info ether3 link down
16:51:51 interface,info ether3 link down
Hello. I’m experiencing THE SAME ISSUE!!!
A link flapping issue with my MikroTik Cloud Router (CCR2116-12G-4S+). I have the ISP link connected to ether3. The setup is such that the MikroTik is connected to a switch that belongs to the ISP, which in turn is connected to the ISP’s router. As a result, I’m not receiving the uplink directly from the ISP router.
I’ve tried replacing the LAN cable (for the ISP uplink) multiple times, but I continue to see the link flapping with messages like “Link OK,” “Unknown,” and “No cable detected.” The strange thing is that I should have an immediate Internet connection, since the cable is directly attached to the ISP’s switch. However, when I attempt to ping the gateway, I get “No route to host” or “Timeout” errors.
Also, I’ve tried all the ports on the router, but the flapping issue persists. Additionally, whenever I connect another device to the router on any port, the router goes down, and all the links start flapping.
and, I’ve already reported this issue to the ISP, but I wanted to check if anyone here has encountered a similar problem before…
Any help would be greatly appreciated!!!
Hiya, we’ve been having the same issues on our CCR2004-16G-2S+ with both active and passive cooling, I initially made a post here: http://forum.mikrotik.com/t/ccr2004-16g-2s-pc-ports-flapping-on-v7-15-3/180121/1 about what could’ve been causing our ports to flap, reboots are a temporary solution, but it always comes back eventually. Our particular experience with the issue seemed to correlate with the cold, but looking at everyone else’s experiences, are starting to think it isn’t just the cold. Considering how the issues are spanning across different hardware, I’m thinking it could potentially be either a firmware issue or issue with a shared component in the routers/switches themselves (like an ethernet controller or switch controller).
Regardless of the root cause, seeing that it is affecting more than just a handful of customers, across more than just one model of router and switch, I would hope that MikroTik has some eyes on the issue internally. We haven’t had issues like this on our previous CCR10XX routers, so we’ve considered swapping back to those if necessary, and hopping brands entirely in a worst case scenario.
Best solution:
file a support ticket with supout.rif.
The more the better, the faster they will really look into it.
1 Like
hello all. I reached out to MikroTik support, and they confirmed that this is indeed a hardware issue. They’ve advised sending the MikroTik cloud router back for repair or replacement. Soooooo, we finally have an answer IT’S A HARDWARE PROBLEM.
I have noticed identical problems in my router. I own a HAP ax3 router. The current version of the firmware is 7.18.2.
Do you have any information on the issue? Has the problem been resolved somehow?