MikroTik

nmt1900

*) filesystem - fixed NAND memory going into read-only mode or becoming unstable over time;

Most interesting question here is - what would be possible consequences of "NAND memory going into read-only mode or becoming unstable over time" in context of this fix???

nmt1900

Now we know, how this starts. snap 2020-05-21 at 10.13.44.PNG This pops up in log and after that CPU usage goes up and stays there. More than one thing ceases to work after that - commands in terminal produce similar output with suggestion to send supout file. The license level problem is also relat...

nmt1900

Yes it was. As I stated previously, we have 3 1100x4 devices with 6.45.8 and 6.45.9 and they all suffer from same problems to somewhat different extent. Others with 6.44.x versions are functioning without problems. As update to previous - another reboot "brought" license back and this device now als...

nmt1900

What the hell is going on? Well... I can tell you what is going on - I did a reboot after making supout proved to be impossible and some hours after that it left THIS in LibreNMS log snap 2020-05-18 at 14.00.38.PNG and surprise, surprise - it really shows just that snap 2020-05-18 at 13.52.09.PNG I...

nmt1900

Well... I am not sure how can this get more embarrassing, than it already is... Two diffenrent locations, both have RB1100x4, one has 6.45.8 and other has 6.45.9. snap 2020-05-18 at 0.40.37.PNG When CPU usage goes crazy and internal DNS resolution stops working, I try to make supout.rif and guess wh...

nmt1900

The only thing I can maybe add .If you guys do a security update like 6.44.6 only put in the security update and leave further upstream patches to a following update , so we don't have to choose between security and stability. 6.43.16 was released exactly one year ago and it was about last long-ter...

nmt1900

Here we go again with another long-term headache... Hopes for thew solution to 6.45.x + RB1100x4 problem have been destroyed again. First testing produces loss of internal DNS resolution and therefore DNS server settings propagation through DHCP also stopped working - and that with /ip dns set allow...

nmt1900

Now I understand why I did not end up finding this thread before. I am having same kind of issues with 2 devices - one is RB1100x4 and another is RB1100Dx4 - and these are only ones plagued with problems because these are only ones updated to 6.45.8 from 6.44.6 (only long-term releases in use for cu...

nmt1900

*) chr - fixed graceful shutdown execution on Hyper-V (introduced in v6.46); How comes 6.45.9 contains a fix for something introduced in 6.46? In case the bug was "backported" from 6.46 it would be good to know what 6.45.x versions are affected. There's obvious probability of it being present at le...

nmt1900

It has been quite a while since the release and initial idea was to skip this release. However when this pandemic forced people to work from home and VPN usage increased dramatically, IPsec policies started to act up weird on 6.44.6 at one bigger customer location main office. Then we did upgrade to...

nmt1900

I stand corrected (somehow)! It looks like Dude server cannot make RouterOS connections to other devices and ends up with STD failure, when RouterOS connection is made in context of limited user account. Previously it was possible with only "read" + "dude" permissions. Now it has to be at least "rea...

nmt1900

dude - updated The Dude to use new style authentication method; i have updated (packagees, dude & routerboard) the dude Server and all clients but the dude Server can't connect. RouterOS Status: std failure_ not allowed (9) bevore upgrade it works... everything works fine except RouterOS login and ...

nmt1900

But this all boils down to the question: "Is there any good reason for hiding the files?" And the answer is definitely "no", at least MT has not come up with one single reason yet, apart from "the system files are hidden an now the upgrade files follow that path too" which sounds like a politician'...

nmt1900

System files have always been hidden / not accessible for a user in RouterOS. Packages are now following the same principle.

About this... does manual upgrade/downgrade (uploading files + reboot) work as before?

nmt1900

Now it looks like problems are somehow related to wireless and/or CAPsMAN - at least when router is mmips and access point is mipsbe architecture. Both had to be downgraded to 6.45.7 to regain normal operation. Only switch in between works fine with 6.46.1. Let's see what developers can dig out from...

nmt1900

It is almost like with 6.46. I am not sure if it is related only to mmips or not (network has hEX + few mipsbe devices), but after some uptime all traffic slows down to a crawl (to LAN and WAN addresses), ping goes completely erratic and packet loss is significant. I made update at the evening and w...

nmt1900

I got almost useless 5GHz Wifi, ping up to 2700ms.. 2,4GHz also no good, much better bud some jerks and pauses, some "page did not load.." surprises. I had to use cable to downgrade to 6.45.7, succeed and all is ok again. Well I do not feel confident with mean of "stable" release anymore.. I have s...

nmt1900

A little bit of "backward logic" lead to usable workaround until this bug is fixed. If CAP interface has to be configured on fixed DFS channel, then just add its frequency to CAPsMAN channel list (or interface properties) twice . /caps-man channel add band=5ghz-a/n/ac extension-channel=Ceee frequenc...

nmt1900

Can CRS328-24P-4S+RM and CRS125-24G-1S-RM be connected together with S+DA0001. One switch has SFP port and other one has SFP+ ports.

Will connection work if port on CRS328 is manually set on 1 Gbps speed or is manual setting even needed?

nmt1900

Of course it is perfectly normal, if affected interface goes down, because it should do that by design. There is nothing normal about manager itself going down and thereby disabling ALL wireless in the customer network alltogether. How can it be normal, that radar detections on one interface can int...

nmt1900

This problem has been reproducible on all similar setups where I tried it out. This example has CAPsMAN manager on router and 2 fixed channel access points as CAP-s with local forwarding. Let's see, what happens, when radar is detected on one of them snap 2019-10-30 at 23.36.57.png Here we can see r...

nmt1900

After issuing RMA and receiving new unit it seems like this issue has been resolved - there has been no link downs or any sort of data errors for over a month of uptime...

nmt1900

I must admit, that this same issue has been haunting at different customer locations for some time now. Problem seems to be related to somewhat unexplainable small CPU background activity, which is usually 5% at most and is absent, when device operates normally. All this occures even when there is n...

nmt1900

I am not sure if this has been happening before, but it is not acceptable. At first I was seeing periodic CAPsMAN outages - when all remote CAP's became unbound and disappeared from "Remote CAPs" list and then everything was back and 5 GHz radios started radar detect all over again. It was only now ...

nmt1900

I have seeing this space error already in few devices: A CRS326, hAP AC, hAP ac2 with any 6.45.x version and I have been unable to find a solution. Even when I manually upload the firmware it reports wrongly the free space (i.e. 5% free) but I can upload the firmware that in theory exceeds this spa...

nmt1900

Its 100% the CRS328's not the CRS317's My experience tells otherwise - links between 317 and 326 are flapping, but when link from one 317 is connected to other 326, then flapping travels along with "sick" 317. I don't know about 328-24P-4S+, but 326 seems to have similar hardware (counting out PoE ...

nmt1900

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 necessa...

nmt1900

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...

nmt1900

spacex nmt1900 Make sure that your monitored device "IP-SNMP communities" and The Dude "server settings" SNMP custom profile does not have any mismatch. There is no mismatch and these community settings have been used for long time. Only Dude fails and it worked fine with 6.44.3. After testing it l...

nmt1900

spacex nmt1900 Make sure that your monitored device "IP-SNMP communities" and The Dude "server settings" SNMP custom profile does not have any mismatch. There is no mismatch and these community settings have been used for long time. Only Dude fails and it worked fine with 6.44.3. After testing it l...

nmt1900

It might not always be hardware related problem. I had this problem recently with 6.43.14 on RB1100AHx4, which has redundant dual power supplies and is powered from two separate UPS devices - so there is practically no possibility for real power outage, because other devices which are fed from the s...

nmt1900

It looks like SNMP access from Dude works OK with SNMPv1 or SNMPv2c. Maybe something with SNMPv3 authentication or encryption is wrong in Dude? It looks like Dude has problems with SNMP access. snmpwalk to other Mikrotik device causes this to appear in log of target device 10:22:24 snmp,debug unsupp...

nmt1900

nmt1900 - Can you reproduce this problem once more? Actually. sounds that this was simply a coincidence and the problem was caused by something else besides static ARP entries Router has one bridge with 2 addresses/subnets on it without VLANs and ARP in reply-only mode. Subnet 1 has DHCP with add-a...

nmt1900

RB1100AHx2 was last one with fans.

nmt1900

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 be...

nmt1900

It looks like Dude has problems with SNMP access. snmpwalk to other Mikrotik device causes this to appear in log of target device 10:22:24 snmp,debug unsupported v3 security level 10:22:24 snmp,debug v3 err: 0 unsupported security 10:22:24 snmp,debug bad packet and snmpwalk times out. We have LibreN...

nmt1900

Upgrade 6.44.3 -> 6.45.1

ARP in reply-only mode was used and static ARP entries had to be removed and added back to regain L3 access to other Mikrotik devices on the network (static IP addresses and these same static ARP entries).

RB750Gr3

nmt1900

RB260GSP and CRS112-8P-4S-IN have sfp ports, but S+85DLC03D is sfp+ module. Incompatibility seems to be at other end of the link.

Using modules like S-85DLC05D at both ends would solve the problem.

nmt1900

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, a...

nmt1900

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-co...

nmt1900

If we are talking about old RB1100 (the first generation), which has Atheros switch chips in it, then hardware offloading is possible with many configurations. However if device is latest RB1100AHx4, then hardware offload is possible only when STP is completely disabled. Same problem is with RB4011 ...

nmt1900

There seems to be one more thing to it... As I see here, CRS326 has one bridge with enabled VLAN filtering, while router RB1100 has bridges without VLAN filtering enabled. When I was testing CRS326 setups when VLAN-aware bridges first came out on RouterOS (with 6.41 probably), then I saw that switch...

nmt1900

This "improved stability on 802.11ac wireless devices" reminds me of one problem with 6.43.14. One site has quite a few wAP ac devices (QCA9550) and repeating scenario: CPU usage rises some time at weekend when no users are present and stays there (at about 5...10%). This rises temperature reading t...

nmt1900

If nslookup gives SERVFAIL as answer, then is it really related to old vs new cloud implementation? My device has 6.43.7 on it but DDNS lookup has been giving SERVFAIL results intermittently through today. Only Google DNS has been able to resolve all the time, but DNS of my ISP has mostly been not...

nmt1900

It seems to be "intermittent" problem - sometimes resolution of sn.mynetname.net works and sometimes it returns SERVFAIL...

nmt1900

After updating a RB3011 to 6.43.7 we lost connection, went to the site and after debugging and checking I discovered that there was a new dhcp-client at the config pointing to eth1 that wasn't there before update. In our case on eth1 we have our internet-provider router bridged connected via PPPoE,...

nmt1900

It might have something to do with IGMP snooping - if it's turned on (as it is by default on new bridges) then HW offload is deactivated. HW offload will be available after IGMP snooping is turned off on the bridge. It looks like only CRS series devices can have both at the same time. https://wiki.m...

nmt1900

I have similar (bad) experience with the new bridge and VLAN tagging. The first attempt to convert my initial multi-bridge setup to a single bridge with VLAN tags failed. I reverted to my pre-6.41 configuration (separate bridge for each VLAN and switch configured for the VLANs and tagged/untagged p...

nmt1900

Setting up multiple CAPsMAN controllers on same network seems to be a topic of quite scarce availability of information. I am having a setup in works with one network segment behind wifi link connection and this might be in need of second CAPsMAN controller for failover. Configuration basics seem to...

nmt1900

Big problem! Compatibility problems with older RouterOS versions. I had one CRS226 with v.6.30 and was not able to configure VLANs in switch mode. It works with WinBox 3.7, but with 3.10 it looked like switch was in router mode i.e. there was no VLAN menu under 'Switch'. I was unable to understand w...

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