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MikroTik App

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by Lefteris
Fri Jul 30, 2010 6:05 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

This sounds like standard Cisco auto-negotiation problems to me. Just lock the ports each end at 100mbit FDX and you will have no problems. This is not limited to Cisco+Mikrotik, it also happens when you try and connect many other brands of equipment to Cisco switches. I am not so sure about this h...
by Lefteris
Fri Jul 30, 2010 5:18 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

All 3 (11-13) trouble making ports are connected with a couple of Cisco L3 2948G switches. The only way that worked without giving me trouble was with auto negotiation off at 100/FDX. I will be submitting the supout file soon.
by Lefteris
Thu Jul 29, 2010 6:30 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

Something like 100-200k!!! After some more extensive tests, even the beta is not working right. All interfaces seem to open at 100/FDX with auto negotiation on however the transfer speed is really slow again no matter how many times I recycled the Cisco switches or the 1100s. THE ONLY way I got the ...
by Lefteris
Mon Jul 26, 2010 6:05 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

But wouldn't you expect extremely bad throughput on half duplex? Why do you need to use half duplex at all on wired Ethernet ports? Yes, I would expect slower speeds but not EXTREMELY BAD. I don't need half duplex in case I have full. However, there are still cases of people having hubs which means...
by Lefteris
Mon Jul 26, 2010 5:17 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

The v5.0beta5 seems to work as it should with the default settings (auto negotiation turned on at both sides). However, I still get errors and extremely slow connection problems when I turn auto negotiation off at both sides and I set duplex to half at 100Mbps. I have tested with a couple of differe...
by Lefteris
Fri Jul 23, 2010 4:52 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

I will setup a test router sometime next week and let you know but even if this works, I don't really feel comfortable using betas in production routers. Shouldn't the fix also apply to future v4 releases?
by Lefteris
Thu Jul 22, 2010 7:52 pm
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

The workaround of this 1100 hardware glitch is to turn off auto negotiation. No more disconnects for me here after this. THIS MUST BE DONE IN ALL DEVICES CONNECTED TO PORTS 11-13 . What I wonder though is if Mikrotik acknowledges the problem and is going to replace the boards having this hardware fa...
by Lefteris
Wed Jul 21, 2010 1:34 am
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

New config here also but speed and duplex negotiation doesn't really have to do much with configuration in most cases when set to auto. This is really a hardware implementation problem and a pretty old one actually that used to happen quite a lot a few years back.
by Lefteris
Wed Jul 21, 2010 12:36 am
Forum: RouterBOARD hardware
Topic: RB-1100 Port problems, and performance problems
Replies: 61
Views: 20053

Re: RB-1100 Port problems, and performance problems

Another me too here. All 3 1100s have the exact same problems with these 3 ports. Errhhhmmmm... I REALLY HOPE I am wrong here but there maybe something more to this than just a simple software fix. It looks more like a hardware bug... I have turned off auto negotiation everywhere and the problems se...
by Lefteris
Sat Jul 17, 2010 7:53 am
Forum: RouterBOARD hardware
Topic: [ask] RB 1100 information when available? feature + compare
Replies: 14
Views: 3735

Re: [ask] RB 1100 information when available? feature + comp

It would have been a much better idea to keep the 1000 model also in production until the higher end replacement would have been available. It should have been called 8XX or something similar to that as it is not really any better than the 1000 model and it is definitely not the top of the line core...
by Lefteris
Tue May 25, 2010 5:31 am
Forum: Beginner Basics
Topic: RB 450G is hot?
Replies: 35
Views: 20789

Re: RB 450G is hot?http://forum.mikrotik.com/search.php?sear

I think I would worry and actually worry a lot since the RB450G is suppose to work up to 45C according to this: http://routerboard.com/pricelist.php?showProduct=52 It is not very clear though if that is the ambient air temp in the box or the sensor's temp and where the sensor is located at. However,...
by Lefteris
Mon May 24, 2010 10:50 pm
Forum: Beginner Basics
Topic: RB 450G is hot?
Replies: 35
Views: 20789

Re: RB 450G is hot?

Mine works around 55-60C without much load. It seems this RB runs a bit to the hot side.
by Lefteris
Sat Dec 19, 2009 1:29 am
Forum: Wireless Networking
Topic: WMM Example / Is this the right way?
Replies: 1
Views: 3012

Re: WMM Example / Is this the right way?

Yes, almost. ip firewall mangle add chain=prerouting action=change-dscp new-dscp=46 protocol=udp [src-address=1.2.3.4] [in-interface=ether1] src-port=10000-20000 passthrough=yes The above rule is for the default rtp ports in an asterisk server and the DSCP value is the default one used for SIPURA/Li...
by Lefteris
Thu Oct 29, 2009 1:51 am
Forum: General
Topic: Generic DSCP based QoS with equal bandwidth distribution
Replies: 4
Views: 1951

Re: Generic DSCP based QoS with equal bandwidth distribution

UPDATED scripts: :for x from=63 to=56 do={/ip firewall mangle add action=mark-packet chain=postrouting disabled=no dscp=$x new-packet-mark=priority-1 passthrough=no} :for x from=55 to=48 do={/ip firewall mangle add action=mark-packet chain=postrouting disabled=no dscp=$x new-packet-mark=priority-2 p...
by Lefteris
Thu Oct 22, 2009 1:35 pm
Forum: General
Topic: L2TP/IPSec VPN access for Mac OS X 10.5 client
Replies: 8
Views: 20121

Re: L2TP/IPSec VPN access for Mac OS X 10.5 client

Seems like even now with ROS v4.1 and Mac OS X 10.6 the problem still remains. Has anyone ever had any success with L2TP/IPSec and Mac OS X?
by Lefteris
Tue Sep 22, 2009 1:53 am
Forum: General
Topic: Generic DSCP based QoS with equal bandwidth distribution
Replies: 4
Views: 1951

Re: Generic DSCP based QoS with equal bandwidth distribution

You'll probably save some resources by using mangle rules to make only 8 unique packet-marks, and have 8 queues (one for each mark) rather than 64 queues. So far, there is virtually no CPU difference at all between the two setups for a home ADSL network but I suppose in a large network you are prob...
by Lefteris
Tue Sep 22, 2009 12:15 am
Forum: General
Topic: Generic DSCP based QoS with equal bandwidth distribution
Replies: 4
Views: 1951

Re: Generic DSCP based QoS with equal bandwidth distribution

You'll probably save some resources by using mangle rules to make only 8 unique packet-marks, and have 8 queues (one for each mark) rather than 64 queues. I was afraid of that also but I have been monitoring the CPU/memory load in a 450G board and surprisingly it doesn't seem to have added as much ...
by Lefteris
Mon Sep 21, 2009 11:42 pm
Forum: General
Topic: Generic DSCP based QoS with equal bandwidth distribution
Replies: 4
Views: 1951

Generic DSCP based QoS with equal bandwidth distribution

Will this be an acceptable generic QoS solution, including VoIP? I am only interested in prioritizing in/out traffic without specifying bandwidth since this is hard to do, specially on busy city wireless links with a lot of wifis around or ADSL lines without any ISP speed warranty. :for x from=0 to=...
by Lefteris
Fri Sep 18, 2009 4:24 am
Forum: Scripting
Topic: dynDNS Update Script
Replies: 158
Views: 114147

Re: dynDNS Update Script

After numerous tries the script below seems to work fine under any condition with v3.28. For some reason the original script kept on failing to automatically (manually worked) update DynDNS, specially right after a router reboot. /system script add name=DynDNS policy=read,test source={ # Define User...
by Lefteris
Mon Aug 10, 2009 6:20 pm
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Re: Can RouterOS bridge networks without WDS?

@macgaiver: I am no standards expert BUT I find it extremely hard to believe that only MT follows the standards while ALL other companies I have tested so far, are not!!! But even if that is the case, and MT follows the standards while all the rest are not (for me it actually _IS_ a standard just be...
by Lefteris
Mon Aug 10, 2009 3:09 pm
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Re: Can RouterOS bridge networks without WDS?

Should it not bridge packets from the remote PC?
by Lefteris
Mon Aug 10, 2009 2:43 pm
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Re: Can RouterOS bridge networks without WDS?

I am not so sure about those miracles you are talking about. The official answer of MT support is: "we haven't received any complains about such problems. Your device was configured as a Bridge so it is working as a bridge." so according to MT this is not a "known" problem and the RouterOS is bridgi...
by Lefteris
Sun Aug 09, 2009 2:24 am
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Re: Can RouterOS bridge networks without WDS?

IkarusOS does a pretty good job at this. A couple of other BRs/APs work also as expected. Actually just about any BR/AP I have tested (Linksys, Cisco, D-Link) worked as expected except RouterOS. WDS is not an option here as it is not supported by other wifi devices. I am not so sure if EoIP is eithe...
by Lefteris
Sat Aug 08, 2009 10:16 pm
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Re: Can RouterOS bridge networks without WDS?

I did exactly as you said but not everything worked. I maybe missing some kind of parameter as I am pretty new to RouterOS. Here comes the hard part that doesn't work: (Network)---(Bridge)---(Aironet UC4800)---(Remote PC) I am trying to replace quite a few remote points like the above (its a bit mor...
by Lefteris
Sat Aug 08, 2009 8:35 pm
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Re: Can RouterOS bridge networks without WDS?

What if no interfaces are in a client mode and want this to be the central ap-bridge wifi? I was trying to put all interfaces under one bridge but it doesn't seem to work.
by Lefteris
Sat Aug 08, 2009 12:25 pm
Forum: Wireless Networking
Topic: Can RouterOS bridge networks without WDS?
Replies: 15
Views: 2670

Can RouterOS bridge networks without WDS?

I am trying to bridge ether1 and wlan1 but it doesn't seem to work. The final goal is to bridge networks that reside on ether1, wlan1 and wlan2 all in one class C network. Can this be done using RouterOS without WDS? Is this type of bridging supported?
by Lefteris
Tue Aug 04, 2009 2:16 am
Forum: Wireless Networking
Topic: Solving 20km wireless link issues
Replies: 147
Views: 113544

Re: New 20km link, weird interference.

Well, searching that community in the middle and finding the surface that reflects those waves and keeping it that way, is one way to go! Seriously though, N will help if signals are reflected but in your case I doubt if it will help much. Increasing gain in general (TX/RX, antennas, minimize losses...
by Lefteris
Mon Aug 03, 2009 11:23 pm
Forum: Wireless Networking
Topic: Solving 20km wireless link issues
Replies: 147
Views: 113544

Re: New 20km link, weird interference.

I think only a spectrum analyzer would most likely help and show the RF interference levels, if any, as I have a few doubts about the interference theory. If it were RF interference, then changing your polarization would show different SNR levels. Have you checked that? Have you tried any other card...