Community discussions

Search found 131 matches

by Bergante
Thu Aug 07, 2014 11:42 am
Forum: Wireless Networking
Topic: SXTG-5HP ac D - mcs rates under AC ??
Replies: 34
Views: 11418

Re: SXTG-5HP ac D - mcs rates under AC ??

The signal levels are really high. Should we apply a different doctrine to the new -AC units? I mean, with the "classic" -N ones it's recommended to aim for a signal level between -60 and -70 dBm in order to avoid overload. Should we keep the signal levels higher with these new -AC units? Won't we h...
by Bergante
Fri Jul 18, 2014 2:35 pm
Forum: General
Topic: Newsletter 60: 802.11ac
Replies: 104
Views: 54819

Re: Newsletter 60: 802.11ac

Just asked a distributor in Bulgaria about the AC products, he said - "No information available" good, keep asking :) this should put them on the phone right away :) Haha, same here. I'm hoping for my usual distributor (Eurodk) to have them available. Come on guys, I want to place an order as soon ...
by Bergante
Fri Jul 18, 2014 2:07 pm
Forum: General
Topic: Newsletter 60: 802.11ac
Replies: 104
Views: 54819

Re: Newsletter 60: 802.11ac

Hmm I really want to test those new -AC toys. When will they be available?

And the newsletter access from the homepage says "access denied".
by Bergante
Tue May 27, 2014 10:46 am
Forum: General
Topic: New Wireless package
Replies: 53
Views: 27661

Re: New Wireless package

Of course you're right if you want to test the capacity of the link(chain). With a lot of users you'll see this capacity but a single user never see this bandwidth even if the link(chain) is unused.[/quote] In my case, with a round trip time of more than 50 ms for large packets, a user needs a huge ...
by Bergante
Mon May 26, 2014 11:48 am
Forum: General
Topic: New Wireless package
Replies: 53
Views: 27661

Re: New Wireless package

Using 127.0.0.1 you hit the CPU twice as hard as it is sender and receiver. My tests are reproducable with a speedtest from PC to speedtest.net. There is a problem other than the speedtest itself. Measuring usable bandwidth, especially depending on where you do it, is much trickier than it seems. I...
by Bergante
Wed May 21, 2014 4:27 pm
Forum: General
Topic: New Wireless package
Replies: 53
Views: 27661

Re: New Wireless package

You see the degradation is not as worse with only the second link. So my conclusion is that there are hickups/queuing problems which sum up to make a bad tcp result while udp is not disturbed. I would suggest a test using a pair of **nix hosts (FreeBSD or Linux is perfect for that) and checking a f...
by Bergante
Wed May 21, 2014 2:05 pm
Forum: General
Topic: New Wireless package
Replies: 53
Views: 27661

Re: New Wireless package

I forgot to say, switching from wireless to wireless-fp on 6.13 has been so far completely trouble free and I think the performance got slightly better (even for my somewhat weird configuration). Now I am running wireless-fp and happy with it. The only issue I had with it on 6.12 was, 30 MHz channel...
by Bergante
Wed May 21, 2014 1:27 pm
Forum: General
Topic: New Wireless package
Replies: 53
Views: 27661

Re: New Wireless package

Would you please post the exact method used? I would be happy to try and compare. Right now I am runnning NV2, and my configuration is a bit complex, BGP-VPLS connecting several networks at both sides of the link. But I think it's better not to use the own routers bandwidth test. RouterOS 6.13 with ...
by Bergante
Tue May 13, 2014 4:40 pm
Forum: General
Topic: New Wireless package
Replies: 53
Views: 27661

Re: New Wireless package

Confirmed with OmniTIKs.

I have the superchannel license, and I can't enable the custom 30 MHz channel width with wireless-fp enabled. Disabling wireless-fp and enabling wireless it works perfectly.
by Bergante
Tue Apr 01, 2014 12:49 pm
Forum: General
Topic: v7.0 Released! (april fools joke)
Replies: 11
Views: 2949

Re: v7.0 Released! (april fools joke)

I love the new Sub-Etha wireless mode. 100% CCQ with zero line of sight and regardless of distance.
by Bergante
Tue Feb 25, 2014 12:57 pm
Forum: General
Topic: Known issues and bugs - a list
Replies: 283
Views: 110895

Re: Known issues and bugs - a list

Perfectly stable wireless link between two Omnitiks works perfectly with RoterOS <= 6.6. The link is table, with CCR > 90 % most of the day. After upgrading to 6.7, it begins to develop problems. Several days after the last reboot, packet loss appears. A reboot of just the one configured as an AP so...
by Bergante
Tue Feb 11, 2014 12:33 pm
Forum: General
Topic: 6.9 released!
Replies: 223
Views: 79583

Re: 6.9 released!

Does it ring any bell? Seems to be some change from 6.6 to 6.[789]. Please make a support output file from both routers when the problem happens again and send them to support@mikrotik.com I will. Any suggestions to get useful log information? I am collecting logs with Splunk but, so far, I can onl...
by Bergante
Mon Feb 10, 2014 7:21 pm
Forum: General
Topic: 6.9 released!
Replies: 223
Views: 79583

Re: 6.9 released!

I think there's some bug in the wireless subsystem, introduced in version 6.7. I have two Omnitiks used to establish a link across a street. Nothing fancy, it works solid with NV2, CCR between 80-100% depending on when I open a window (both units are indoors, placed close to the windows). Until I up...
by Bergante
Wed Feb 05, 2014 11:22 am
Forum: General
Topic: Reverse Path Filtering - Interface?
Replies: 2
Views: 766

Re: Reverse Path Filtering - Interface?

Unfortunately not, which makes the feature useless and even dangerous except for the most trivial settings.
by Bergante
Wed Nov 06, 2013 11:00 am
Forum: Forwarding Protocols
Topic: Feature request: BGP flowspec (RFC5575)
Replies: 24
Views: 6688

Re: Feature request: BGP flowspec (RFC5575)

Right now not many transit providers support it. From the Mikrotik side, the priority would be to implement the BGP exchange, even if RouterOS doesn't have the mechanisms in place to actually apply the rules, but at least enabling the RouterOS to send BGP flowspec advertisements to the transit provi...
by Bergante
Tue Nov 05, 2013 2:37 pm
Forum: Forwarding Protocols
Topic: Feature request: BGP flowspec (RFC5575)
Replies: 24
Views: 6688

Feature request: BGP flowspec (RFC5575)

Are you planning to implement this? For unfamiliar readers, roughly speaking, it uses BGP to distribute filter specifications. It's very useful in DDoS attacks, allowing you to send "firewall rules" (matching on source and destination addresses, protocols, ports, etc) to your BGP peers/transits, so ...
by Bergante
Mon Sep 16, 2013 11:50 am
Forum: Wireless Networking
Topic: As we would like to evolve the wireless
Replies: 57
Views: 16288

Re: As we would like to evolve the wireless

You mean an attenuator on the 5Ghz frequency (the ones where you work normally) or attenuation larger or smaller 5Ghz frequency (or the specified range) I believe that an attenuator lowers the input power and also output when used on the range of operating frequencies... you give an example An atte...
by Bergante
Fri Sep 13, 2013 2:21 pm
Forum: Wireless Networking
Topic: As we would like to evolve the wireless
Replies: 57
Views: 16288

Re: As we would like to evolve the wireless

A very important feature would be programmable hardware attenuation for the receiver part. That would improve the performance in high interference places. You would be able to use a higher transmission power, so that your signal would stay above the interference, at the same time avoiding the receiv...
by Bergante
Thu Sep 12, 2013 1:27 pm
Forum: Forwarding Protocols
Topic: How to measure traffic to an ASN?
Replies: 9
Views: 3024

Re: How to measure traffic to an ASN?

Hi,
I'm trying to get a peering agreement with a local Content provider, but I need to measure the traffic from my ASN to their ASN. What method or program do you use to measure ASN to ASN traffic?
For that purpose (and many others!) Netflow is your friend.

Try nfsen (nfsen.sourceforge.net).
by Bergante
Wed Jun 19, 2013 10:35 am
Forum: Forwarding Protocols
Topic: Unicast Reverse Path Forwarding
Replies: 4
Views: 5645

Re: Unicast Reverse Path Forwarding

I've been trying it on 6.1 and I have found some problems: 1) If I enable it, it seems it isn't actually enforced until I reboot the router. 2) This is not the best way to implement it. It should be controlled for each interface, instead of being an all or nothing parameter. In a provider network yo...
by Bergante
Mon May 20, 2013 7:01 pm
Forum: General
Topic: v6rc14 released
Replies: 125
Views: 30612

Re: v6rc14 released

it's actually 'upload' of a 'target', i.e. traffic received on the interface :) does not feel clear nor simple. :( It is "Target upload" not "router upload". Therefore, these options are from perspective of the target. If you want to limit your users's upload capability, set "target upload". I'm st...
by Bergante
Mon May 20, 2013 2:13 pm
Forum: General
Topic: v6rc14 released
Replies: 125
Views: 30612

Re: v6rc14 released

"target" option now can be used - specify interface there. Thank you :) Documentation should be updated, then. Also, there is something confusing in the documentation. In case "target" is an interface, which direction is considered "upload" and which one is considered "download"? I would rather use...
by Bergante
Mon May 20, 2013 11:28 am
Forum: General
Topic: v6rc14 released
Replies: 125
Views: 30612

Re: v6rc14 released

There's a regression problem. On 5.25 I can add a simple queue and bind it to an interface. Example: [admin@OmniTik-casa] /queue simple> add name=queue-guest max-limit=512K/128K interface=ether2-master-local This doesn't work on 6.0rc14. I can't add the "interface" clause to a simple queue. This is ...
by Bergante
Thu May 16, 2013 10:49 am
Forum: General
Topic: v6rc14 released
Replies: 125
Views: 30612

Re: v6rc14 released

I forgot, sorry for the double post:

Regarding logging, I really miss a detailed logging of router advertisement/withdrawals for the routing protocols in debug mode. Not just state transitions.
by Bergante
Thu May 16, 2013 10:05 am
Forum: General
Topic: v6rc14 released
Replies: 125
Views: 30612

Re: v6rc14 released

Some things I would fix (rc14): - Using BGP-VPLS (l2vpn) there's no way (or I haven't found it) to see the BGP advertisements You can't and most likely in current implementation such feature will not be added. Understood. However, please do consider adding it as soon as possible after the 6.0 miles...
by Bergante
Sat May 11, 2013 12:55 am
Forum: Wireless Networking
Topic: new unlincensed band in Spain
Replies: 18
Views: 3833

Re: new unlincensed band in Spain

Time to roast some chickens! ;)
by Bergante
Sat May 11, 2013 12:39 am
Forum: General
Topic: v6rc14 released
Replies: 125
Views: 30612

Re: v6rc14 released

Some things I would fix (rc14): - Using BGP-VPLS (l2vpn) there's no way (or I haven't found it) to see the BGP advertisements - The web GUI for BGP-VPLS doesn't work - For routing->bgp it would be nice to have a l2vpn routes tab - Logging isn't very consistent. I have noticed that, for instance, som...
by Bergante
Wed Dec 05, 2012 2:12 pm
Forum: General
Topic: topic ROS 6.0rc5?
Replies: 10
Views: 2339

Re: topic ROS 6.0rc5?

Oops, I updated without noticing. I just went home remembering my two OmniTIKs were due an update...

No issues whatsoever, although my configuration is rather trivial.
by Bergante
Mon Jul 23, 2012 6:13 pm
Forum: Wireless Networking
Topic: Wi-Fi Certification
Replies: 10
Views: 2522

Re: Wi-Fi Certification

Even Apple's latest Airport doesn't have Wifi certification. Maybe that's why I have lots of problems with Apple and Wifi :) Are you sure? Apple products use to show up on the Wi-Fi Alliance website with a delay of a month or so. If you search for Apple products you will find the brand new Express,...
by Bergante
Tue Feb 28, 2012 12:38 pm
Forum: Wireless Networking
Topic: Wireless WDS setup, cannot see LAN network ..
Replies: 2
Views: 1435

Re: Wireless WDS setup, cannot see LAN network ..

I don't understand why you are using WDS. If they are connected to the same wired network, just set the same SSID and, of course, the same authentication parameters. The clients will connect to the strongest signal.
by Bergante
Tue Feb 28, 2012 12:30 pm
Forum: General
Topic: Feature suggestion
Replies: 0
Views: 632

Feature suggestion

Hi :) I'm a newbie with this equipment, for now I am playing with a pair of Omnitiks. There's a useful feature I *really* miss: a receiver side attenuator. It can be very useful to battle high noise. It allows you to increase the output power of the transmitter to achieve a higher S/N ratio, while p...