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MUM Europe 2020

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by alfredo
Wed Jan 15, 2020 2:49 pm
Forum: RouterOS v7 BETA
Topic: Feature request: per interface rp-filter
Replies: 2
Views: 292

Re: Feature request: per interface rp-filter

+1. In many cases I found that in those routers where it would be most useful, it can’t be enabled because it will break routing.

Cisco has been per interface (and wire speed) for many many years.

Please help operators with BCP38! It will help a lot in containing the nastiest DDoS attacks.
by alfredo
Thu Oct 10, 2019 9:37 am
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

I think I ordered them from RS Components. Could also have been Digi-Key. The part number quoted is for the male side. The Molex site will helpfully link these with their female counterpart and the useable contacts. You need all three parts: Male (pins with their housing); female (hollow plastic); a...
by alfredo
Sun Jul 29, 2018 6:29 pm
Forum: RouterBOARD hardware
Topic: Capacitors in CCR1036 board
Replies: 7
Views: 1640

Re: Capacitors in CCR1036 board

Thanks for the input, especially the interesting explanation on how capacitors die. In this particular unit, the power supply had already been replaced. Actually this is one of the units I fitted with dual power supplies.

Now hoping the remainder capacitors remain good for a few more years!
by alfredo
Tue Jul 24, 2018 10:51 am
Forum: RouterBOARD hardware
Topic: Capacitors in CCR1036 board
Replies: 7
Views: 1640

Re: Capacitors in CCR1036 board

So the value is 680 µF, 6.3 V.
The manufacturer for these is Su'scon. I have ordered for replacements Würth Elektroniks of the same value, rated for 125°C instead of the 105°C of the failed ones. At the princely cost of 0.818 euros apiece in RS, I hope them to last for a lifetime.
by alfredo
Sat Jul 21, 2018 10:58 am
Forum: RouterBOARD hardware
Topic: Capacitors in CCR1036 board
Replies: 7
Views: 1640

Re: Capacitors in CCR1036 board

I think you are both right. Since the capacitors are obviously faulty, I will remove them from the board first so I can see the markings better.
by alfredo
Fri Jul 20, 2018 7:11 pm
Forum: RouterBOARD hardware
Topic: Capacitors in CCR1036 board
Replies: 7
Views: 1640

Capacitors in CCR1036 board

Hello. One of our CCR1036 began acting funny. After a few hours of head scratching looking into the software while taking angry customer calls, the unit was replaced. On visual inspection of the faulty unit, we discovered these bulged capacitors. They seem to be there to stabilize power to the Ether...
by alfredo
Mon Jun 11, 2018 7:11 pm
Forum: Forwarding Protocols
Topic: BGP performance workaround using route servers
Replies: 3
Views: 1044

Re: BGP performance workaround using route servers

Hi alfredo, there is also a different way of improving the BGP convergence with mikrotik v6; and that's using CHR hosted by servers, you can take a look at this idea in the following link: Thanks for that, it's interesting. We are using Bird rather than CHRs since they are well proven as route serv...
by alfredo
Thu Jun 07, 2018 12:16 pm
Forum: Forwarding Protocols
Topic: BGP performance workaround using route servers
Replies: 3
Views: 1044

BGP performance workaround using route servers

We have been bitten quite hard recently by the well known problem with the lack of performance of BGP with full routing tables on the CCR. Given that v7 isn't really expected anytime soon and Mikrotik doesn't seem to be anywhere near a solution for that, we have decided to work around the issue by a...
by alfredo
Tue Sep 26, 2017 1:56 pm
Forum: General
Topic: Feature request: CTRL-W in line editing.
Replies: 3
Views: 1037

Re: Feature request: CTRL-W in line editing.

+1. I miss Control-W very much.
by alfredo
Wed Aug 23, 2017 3:00 pm
Forum: Forwarding Protocols
Topic: Traffic Flow ( netflow) Autonomous system information
Replies: 44
Views: 12594

Re: Traffic Flow ( netflow) Autonomous system information

+1, it would be awesome to get AS numbers in netflow. As others said, any serious traffic analysis at the AS level is not possible without this.
by alfredo
Mon Sep 26, 2016 12:08 pm
Forum: RouterBOARD hardware
Topic: CCR - Secondary PSU
Replies: 58
Views: 22147

Re: CCR - Secondary PSU

Without dual PSU connector there is a way to get dual PSU but it will screw up the PSU monitoring. You can connect both PSU's to the same connector but you will need 2 pairs of diodes for something called OR-ing. Well you don't get monitoring anyway (or at least I haven't seen a way) so good idea. ...
by alfredo
Sat Sep 24, 2016 3:05 pm
Forum: RouterBOARD hardware
Topic: CCR - Secondary PSU
Replies: 58
Views: 22147

Re: CCR - Secondary PSU

Do you have equipment to solder the required components? They cost almost nothing.
by alfredo
Thu Sep 22, 2016 6:13 pm
Forum: Virtualization
Topic: CHR: renewal from behind NAT (routing question)
Replies: 21
Views: 7213

Re: CHR: renewal from behind NAT (routing question)

So at some point we may add a script to check and react automatically to DNS changes... But for now, we can add a monitor for DNS changes and that should be enough. I think the router broke the OSPF adjacency before Eduardo's change and don't understand exactly why, but it is no big deal if with tha...
by alfredo
Thu Sep 22, 2016 4:48 pm
Forum: Virtualization
Topic: CHR: renewal from behind NAT (routing question)
Replies: 21
Views: 7213

Re: CHR: renewal from behind NAT (routing question)

Sergejs is doing his best trying to tell you how. Please follow his instructions. I am sure Sergejs is doing his best. However, his idea is not a solution, for the reasons I explained earlier. I think neither Sergejs nor you understand completely the scenario, because if you did, you wouldn't be st...
by alfredo
Thu Sep 22, 2016 4:29 pm
Forum: Virtualization
Topic: CHR: renewal from behind NAT (routing question)
Replies: 21
Views: 7213

Re: CHR: renewal from behind NAT (routing question)

Once again, 1. MikroTik.com does not initiate connection to your device, your device initiate connection to licence.mikrotik.com I never had a problem understanding that. But, packets must flow in both directions, right? It is not enough that a SYN from the CHR reaches licence.mikrotik.com. It is e...
by alfredo
Thu Sep 22, 2016 3:41 pm
Forum: Virtualization
Topic: CHR: renewal from behind NAT (routing question)
Replies: 21
Views: 7213

Re: CHR feature requests

/ip route add dst-address=159.148.147.196 gateway=x.x.x.x 159.148.147.196 is address of licence.mikrotik.com x.x.x.x is a single IP address of a gateway that can be directly reached through one of router's interfaces (there should be access to the Internet on this address). That won't fly. I can se...
by alfredo
Thu Sep 22, 2016 3:18 pm
Forum: Virtualization
Topic: CHR: renewal from behind NAT (routing question)
Replies: 21
Views: 7213

Re: CHR feature requests

Alfredo. You can already do this using routing. Hi Normis, I would much appreciate if you could give me a hint or pointer on how to do that. How do you mangle packets sourced by the router itself? I did search the wiki and the forum but couldn't find it, therefore I opened a case. Perhaps I am star...
by alfredo
Thu Sep 22, 2016 3:00 pm
Forum: Virtualization
Topic: CHR: renewal from behind NAT (routing question)
Replies: 21
Views: 7213

CHR: renewal from behind NAT (routing question)

2nd - licensing similar to all other Mikrotik ROS products - instead of a subscription based license. I would like to license and forget instead of having to track a subscription license. I hesitate to install any products that use a subscription based license. Similar situation here. We want a lic...
by alfredo
Tue Apr 19, 2016 6:46 pm
Forum: RouterBOARD hardware
Topic: CCR - Secondary PSU
Replies: 58
Views: 22147

CCR 1036 secondary PSU

We had 3 of the original PS blown in just 2 weeks, all with a bulge appearing at the top of C10 like this: IMG_8682.jpg Therefore, I had to invest some time into this. The results are as follows. The first decision was easy. Since SMPS of the required 69W (according to the specs posted at http://www...
by alfredo
Wed Apr 06, 2016 6:04 pm
Forum: RouterBOARD hardware
Topic: CCR - Secondary PSU
Replies: 58
Views: 22147

Re: CCR - Secondary PSU

Gonna resurrect this thread again... I got a CCR-1036 and the secondary power supply connector is not actually installed on the board, though I can see where it obviously goes. Other than having no connector, will the secondary supply work on the CCR-1036 as it does the other CCRs? I have made some...
by alfredo
Thu Mar 03, 2016 9:50 am
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

Can't recall now and I can't access the modified devices either, but the photos should tell which one I used.
by alfredo
Wed Mar 02, 2016 6:44 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

The reason not to wire directly to the PSU is that the mainboard seemed to provide a 3-wire connector. This has the benefit that you can query the device for the fan speed (and get an alert if it stops). Besides, the cabling is neat. However, if the mainboard does not provide power... Then direct to...
by alfredo
Wed Mar 02, 2016 6:37 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

Can't agree more on the big no-no that is the lack of STP, which I think I read somewhere to be scheduled for version 7. We didn't find reliability issues like the one you describe, but we did find a few annoying bugs. I also find VLAN configuration unintuitive and would much prefer something simple...
by alfredo
Wed Mar 02, 2016 3:04 am
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

I was totally unable to get the fan to turn. Maybe the components required had been omitted, who knows, but my advice would be to play safe and hook directly to the power supply output.
by alfredo
Mon Aug 17, 2015 5:08 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

Hi, I'm sorry but I was in a hurry to send these boxes to production use and I don't have a spare one to test a short to the power output. As mentioned already, it shouldn't be a problem, as the input is protected by a diode (or so it seems) and the PSUs can be shorted without permanent harm to them...
by alfredo
Tue Aug 11, 2015 5:51 pm
Forum: General
Topic: learn-failed-count on CRS
Replies: 0
Views: 371

learn-failed-count on CRS

Hi, We have a pair of CRS-226 devices bridging two datacenters. Everything is working (with some headaches and annoyances, but working) except that we are getting some heavy packet loss in certain VLANs. I suspect of the 1023 MAC learning limit of the ports (we have way more than that). Indeed, I se...
by alfredo
Sun Aug 09, 2015 1:45 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

I remember asking a question some time back about using two internal PSU's, what would happen in the scenario where one PSU output was short-circuit would this short on say connector 1 pull down the output voltage of the second PSU connected to connector 2 on the router PCB, the reply from Mikrotik...
by alfredo
Sat Aug 08, 2015 9:51 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

The only thing I haven't yet managed is to start the fan. I am using a nice Sunon 2-wire 5V fan, Maglev kind. But for all I got from it, I could have used a piece of wood to the same effect. I found in the wiki that If you have fan with only 2 wires (V+,GND) then you have to set fan-mode to manual ,...
by alfredo
Sat Aug 08, 2015 9:26 pm
Forum: General
Topic: Feature Request: RSTP for CRS to build ring network
Replies: 23
Views: 6395

Re: Feature Request: RSTP for CRS to build ring network

I'll second this. I am quite surprised that the CRSs don't have STP. Also, I have searched around and there is not a clear statement from Mikrotik about whether this will be enabled on a future software (or hardware!) release. I agree that there are great L2 loop protection protocols like G.8032 (a ...
by alfredo
Mon Jul 27, 2015 6:34 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

Good work I also thought about PSU failover however I would never use two of the same make/model of SMPS as one issue which effect one is sure to effect the other (not talking about PSU failure) For example at remote sites AC voltage can contain voltage spikes and noise etc. SMPS do not really filt...
by alfredo
Mon Jul 27, 2015 2:22 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

Thanks @bajodel. Some more things. Here is a photo of the Molex 22-27-2031 that I fitted to the +5V fan holes. I have added a Sunon MB40200V1-000U-A99 fan, which unfortunately doesn't have sensor output (it just happened to be available on RS when I ordered all the stuff). I don't even know if the b...
by alfredo
Thu Jul 23, 2015 8:10 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Re: Hacking two internal power supplies into the CRS226-24G-2S+RM

I have verified that the CCR power connectors are Molex 10-63-4027 connectors (or copies). I have ordered a few of these and soldered them to the CRS motherboard of the second of 3 CRS devices being fit with dual redundant power supplies. They fit perfectly. Note that relative to the nearest edge of...
by alfredo
Fri Jul 17, 2015 5:33 pm
Forum: RouterBOARD hardware
Topic: CCR - Secondary PSU
Replies: 58
Views: 22147

CCR - Secondary PSU: Internal power connector

Hi, Apologies for refloating this old thread, but I feel it is the right place. The power connector in the starting post looks a lot like a Molex 10-63-4037 . At least, it's the best match I found when investigating how to hack dual internal, redundant power supplies into a CRS226-24G-2S+RM . Hope M...
by alfredo
Fri Jul 17, 2015 3:01 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

I did it

I have used the following parts: - Two IEC 320 C14 power input connectors, from the dust bin - Two Mean Well RS-25-24 power supplies from eBay, total €39.40 with tax and shipping from it-tronics.de - Molex connectors... Didn't fit them this time. I wanted to test the hack reasonably quickly; next it...
by alfredo
Thu Jul 02, 2015 2:06 pm
Forum: RouterBOARD hardware
Topic: Hacking two internal power supplies into the CRS226-24G-2S+RM
Replies: 22
Views: 5344

Hacking two internal power supplies into the CRS226-24G-2S+RM

Hi, I am beginning this thread to share my project to upgrade the CRS226-24G-2S+RM to a semi-datacenter class switch by adding two internal power supplies. Any questions and comments are very welcome. I posted my first musings here: http://forum.mikrotik.com/viewtopic.php?f=3&t=84700&p=488755#p48875...
by alfredo
Wed Jul 01, 2015 3:20 pm
Forum: RouterBOARD hardware
Topic: CRS226-24G-2S+RM soon ?
Replies: 8
Views: 2992

Re: CRS226-24G-2S+RM soon ?

Good day, this is my first post here so hi everyone. I hope it is ok to revive this thread with my questions about the box power supply, otherwise please let me know to open a new one. We have just received our first 3 CRS226-24G-2S+-RM and so far, so good. We will be testing them in a datacenter en...