MikroTik

tgrand

I have deployed an OmniTik5ac.
It acts as the NV2 Master, with default authenticate off.
All Sectors are syncing, and so far everything is playing well.

tgrand

My real concern is : will there be unwanted broadcasts outside of the sync beaconing which may interfere with data broadcast from the slave sectors? P.S. to Mikrotik: would be nice if there was an NV2 beaconing mode as opposed to AP-Bridge. If, and only if, the OmniTik Master works in this configura...

tgrand

We have many sectors which use NV2 and have had good success with NV2. With that said there are issues with Sync loss. We are using 30deg RF elements twistport horns with the Shielded RB Enclosures. I believe that this limits the sectors from hearing the beacons affecting Sync. What is the feasibili...

tgrand

I have figured it out.
turns out the more specific route (ie. largest netmask or smallest subnet) is chosen over the larger subnet.
I have to filter the routes to discard smaller subnets from the prefix.

tgrand

I have 2 bgp peers which advertise the same ASN. Peer 1 advertises a single /20 Peer 2 advertises a /20 and several /24s I have set the distance of the peer 1 routes to a lower value, yet the routes still prefer peer 2. It seems to prefer the smaller subnet first. I would like to prefer the peer 1 r...

tgrand

The router I am installing has no video so ROS was installed on an x86 device which has video but ethernets are not recognized. I was pasting the key after moving the drive to the headless router. I installed the drive back into the original x86 device, manually entered the key, and it worked. Moved...

tgrand

New x86 based router, installed ROS6.44 from ISO, and purchased new L6 license key.
Paste/Import key several times, and every time it reports no valid license.

Any suggestions as support seems to be having problems replying to me.

tgrand

Turns out after rebooting my PC everything works fine again. Once I reboot the CRS328 the problem returns and I must reboot any devices attached to it to clear the problem. When the problem is present, Torching the SFP+ port connected to our main router, cures the problem while torch is running. Thi...

tgrand

In my personal office I replaced an RB4011 which I was using as a switch, to a CRS328-24P-4s+. The new CRS328 is connected to an CCR1072-1G-8S+, through a pair of 10G transceivers and SM fiber. On the CRS328 I have a bridge with the SFP+ port added as a port as well as 1 ethernet port. My PC is conn...

tgrand

All good now..
My apologies........

tgrand

I managed to log in but notice that Winbox is missing from the tools menu.
How can I add it back?

tgrand

I recently upgraded From ROS 6.3something to 6.40.2.
Now I can not log into the dude using any user/passwords.
I continually get login failed: invalid user name or password (6)

tgrand

Flow analysis is just not fast enough to detect most DDOS attacks. We use Wanguard from andrisoft. Fiber from our uplinks first goes through an optic splitter and from the splitter out1 goes to our border router and out2 goes to an optic transceiver which Wanguard uses to sniff the packets in real t...

tgrand

Most sfp manufacturers and distributors provide samples.
Request a sample and test.
I have personally not come across any that do not work....

tgrand

What happens to a slave on DFS, when a master on DFS must change channels or vice versa?

does the slave get hung out to dry??

tgrand

Can somebody at Mikrotik please confirm: As I understand it the APs have to either have GPS, or be on the same subnet, or both, in order to sync. If GPS is required then I would have to assume that a USB GPS device needs to be added. If neither is necessary, then please explain how they can magicall...

tgrand

When a CPE has gone down for whatever reason the pppoe session is closed, however the dynamic server remains with an unknown interface. When the pppoe session is attempts to reconnect, it fails because the pool is already exists. This appears to be an inherent problem for making IPV6 work over pppoe...

tgrand

This is the Complete history of the problem. I use eoip runnels often and never have had problems with them. Recently I created on which did not transport data. The tunnel was from a CCR1072 across an x86 with ROS to another x86 ROS router. When I could not get the EOIP tunnel moving traffic I creat...

tgrand

The MTU is set 4 1500. If it were in fact the MTU the IP ping would have not gotten replies either. I am simply asking if anyone with an x86 with ROS 6 and sfp ports can verify this behaviour. The sfp card I have is a hotlava 4 port sfp card. Routers in question are the Maxxwave Corei7 Router as wel...

tgrand

I have a few x86 routers using ROS v6 (6.34, 6.32, and 6.36). All of them have SPF cards. When I ping 1500 byte packets via IP the pings are replied too. When I MAC ping 1500 byte packets the pings timeout. If I lower the packet size to 498 bytes the MAC pings are replied too. Can anyone confirm thi...

tgrand

Would it be too much to ask, if the log for a disconnection of a pppoe connection can include the server it disconnected from.
This would make diagnostics much easier.

tgrand

My CCR1036-8G-2S+ had problem also.
Problem was with ether1 and sfpplus1.
Still broken even after downgrade.
my MTU is set for 1500

tgrand

I would venture to guess that the ros6.35 has problems with ethernet on CloudCore routers. I have Ether1 Flapping, which only started to flap after upgrade, the router it is connected to receives no Link Partner Advertisments. Also SFPplus1 was set to No Autonegotiate at 1gps, after upgrade it must ...

tgrand

rx code error

Was wondering what this error reports.

I have seen fcs-errors while getting no rx code errors so obviously not crc related, or am I wrong?

tgrand

Thanks.
That was what I needed, as until then it was only as clear as mud.
Much appreciated.

tgrand

OK; so now the SXT gets a /63 assigned to testpool. Now ether1 needs a /64 for PD, and another /64 is needed by the DHCPv6 server. How do you propose I split the pool? EDIT: It would probably be preferred that the Dynamic-Static be heavily weighted as opposed to 1=no weight? Dynamic-Static sounds pa...

tgrand

Problem is that the 2 ranges will have to be separate subnets.
1 for RA and one for DHCPv6 both on the same interface.

tgrand

I can put the DHCP-Client on the Wireless interface and have a second DHCPv6 server on the pppoe-servers bridge. The problem with this is the Dynamic Static route with a distance of 1. Why not let OSPFv3 do the routing? or have an option in the DHCP server to not create Dynamic Static route for assi...

tgrand

Yes winbox takes too long to populate the list.
You have the option to see them all, or you can filter to find the ones you are interested in.

My most popular filter is Prefix and in XXX.XXX.XXX.XXX/XX.
Fill in the subnet and it will list all advertisements for any ranges within that range.

tgrand

I have Mikrotik Clients (SXT) which connect with pppoe. The client then assigns IPv4 and IPV6 addresses to the users home routers. The home routers I have encountered require both PD and DHCPv6 addresses to work with IPV6. I would like to have 2 dhcp clients on my pppoe-out interface so that the SXT...

tgrand

I've tossed all my metalSHPn2's in the garbage.

tgrand

Can happen on Tik, Cisco, UBNT, Brocade, etc.

tgrand

Using 10MHz wide channels aren't you?
If you were using 5MHz wide channels you would see the "ghosts" on both sides of your channel.
You can just ignore it...

EDIT:
No sorry.. I see that you are using 20 wide.
Have never seen this on 20MHz wide channels.

tgrand

Go to the interface you see this on using winbox and have a look at the RX Stats tab.
Are there FCS errors?
If so check cables, Ends, Arrestors, POEs, etc.
Try gently cleaning the pins and wires on Ethernet ports and ends with a BURNISHING BRUSH.
If all else fails try a new ethernet port.

tgrand

It is considered poor behavior to compliment on ones RACK.

LOL

tgrand

viewtopic.php?f=2&t=89180

tgrand

Not sure about icmp but amplified attacks use UDP and are delivered regardless of you dropping them. This continues to flood the upstream bandwidth. I have had attacks of over 1Gps take me down, and upstream speeds unknown but took out 10Gbps upstream. The only defense is DDOS mitigation software wh...

tgrand

The answer is in your routing tables.
You using ospf? if so redistribute connected routes.

tgrand

My setup is as follows: RB(PPPOE server) --- Ethernet --- RB(AP Sector *bridged*) --- Wireless --- RB Client(PPPOE client) Client gets a LLv6 address and a ipv6 default route to pppoe-out1 (with no gateway address) If I ping the LLv6 address of the PPPOE Server from the client through wlan interface...

tgrand

I put a ubnt tough switch inbetween my tik and air fibre.
No more fcs errors on tik, but the tough switch reports rx errors on the port connected to the air fibre.

This is clearly an air fibre problem.
Have seen this on approx. 80% of all air fibre deployed.

tgrand

WHMCS works great.
Just have to do some scripting and customization using mikrotik APIs and all is good.
Our WHMCS portal provides daily usage summary.
Invoices bill for bandwidth overages etc.

tgrand

Saw this a few times.

What I saw for me was that there was a typo in the NV2 Security Key.
(Actually it was an uppercase lowercase issue)

tgrand

Why use WDS?
5.24 supports does bridging. The station should be set to Sation Bridge.

tgrand

Ordered some RB912G boards for the first time.
They include 2 little tin can looking things; What are they?

tgrand

several older RB2011LS-IN routers deployed with no issues. Have recently purchased and deployed a few RB2011L-IN routers and these routers are doing just that. They will route traffic then after a several hours to days the Gigabit Switch group seems to disconnect from the CPU and begins switching al...

tgrand

Wow we took an attack at 800Mbps UDP port 0.
Only way to combat, is to have the attacked on your local address space blocked further upstream.

tgrand

You sure it is not just the raspberry PI not having enough of its own resources?

tgrand

There should be enough CPU resource on most boards to do an EOIP tunnel (router to router) which can handle much larger MTU.

tgrand

Just needs 4 diodes and 1 resistor.
You can talk with these devices through any rs232 interface.

What would be nice, is an api to add monitors to routerOS snmp.

tgrand

I'm sure that the world will come to an end for some.
After all the world comes to an end for some at the end of each one of our calendar cycles.

Excessive partying!!!

tgrand

Kewl.

tgrand

I have installed v6rc3 on a RB2011LS.
According to the latest newsletter this RB supports the new cable-test feature.
When I monitor as per the newsletter, no length/open/short information is displayed.

tgrand

The Wavion has settings to hide the ssid just as any other AP. Be sure to also use 802.11 as the protocol. Use RTS/CTS on the client also. Your best to set the SSID manually. When scanning, you may not see the AP at a very high signal level as the Wavion must establish the parameters for a beam, and...

tgrand

Just create a bridge and add the wlan interface and ether interface to the bridge.
use wireless mode station bridge on the client.

tgrand

Not sure that you would need diodes as the chargers should already have as to prevent feedback from the batteries.

tgrand

setup pppoe server on each pop which hands out public IPs.
use ospf to route the public IPs over your private ip routes.
At your gateway nat everything that is not a public IP.

tgrand

do you have the SSID on the wavion configured as "MikroTik"??
Probably not!

tgrand

Does not seem to work when using WPA2.

edit: I beleive it to be a bug with the phones.

tgrand

Has anyone with this problem simply tryed to recompress the pins on the cat5 connectors?
Have seen many a cable test good then not be able move current, and all the time having to do with loosed pins on the cat5 ends.

tgrand

An FPGA is a logic device not applicable to radio communications directly.
A DSP on the other hand could be applicable.

tgrand

Cracked insulators on the power lines can cause arcing which can impact a link. Power lines themselves can but not to the extent that you describe. Sounds like something is not quite right with your link. With the equipment you have outlined you should be able to acheive those signal levels at many ...

tgrand

Shielded Cat5 cable is also recommended.

tgrand

Here is a PHP script which does Wake on Lan Version 2.

This should clear the air on this.

tgrand

Winbox from my perspective is for management and should not be available to ANY ip source addresses.

Do this to any management protocol at your own risk.

tgrand

Order yourself some attenuators to attenuate your signals on both ends of the link.
By doing this you increase the polar seperation and end up with much better CCQ.

tgrand

Netflow can be used with products such as Plixers Scrutinizer, and any other Flow based analyzers.

tgrand

It works great so far.
Resource usage is WAY down in comparison to V4 and V5 flavours.

tgrand

If you use pppoe you the client will get a /32 (a single IP).
This IP as routed via OSPF, allowing you to use x.x.x.1-x.x.x.254 to assign to your clients.

tgrand

affects too many manufacturers to be a driver issue.

tgrand

Are these 2.4GHz links or 5GHz?
If 2.4 then it is an Atheros problem.
Seems to be a datarate issue when using atheros 2.4N.

tgrand

Sounds to me like your measure you distance at ground level.
If so then you are most certainly overshooting, if it is at 80feet.
Is it a laptop you are testing with?

tgrand

Try changing tx-power to - card rates 5db.
Do this at both ends and retest.

tgrand

Perhaps there are no regulators......

tgrand

grounding loops are cause due to a potential difference from one ground point to another ground point. This is due to resistance at the point(s) of connection.(ie. Bolt points of a tower) To avoid grounding loops in audio many installers will solder connectors following crimping. Oxidation on connec...

tgrand

The dc power supplies are isolated from ground due to the decoupling of the transformer. The transformer is then grounded directly to the power companies ground. The only reason for grounding loops would be poor conductance of the ground, ie. Relying on the bolted sections of a tower to ground. Ulti...

tgrand

It only supplies what the device needs, not what the power supply can provide.

tgrand

2.5 amp power supply.
2500 -500 approx. = 2000 mA
2000 / 500 = 4 ports

could the limit be only due to the power supply?

tgrand

The mac addresses will be different for each ether interface so that not likely the problem.
The problem is most likely the profile for each pppoe-client is default.
or possibly the default route having to paths to the same gateway.

tgrand

On the AP what type of radio card are you using?
Is it an N card?

tgrand

711 appears to out perform the 411 from all testing I've done.

certainly boots a heck of a lot faster ;P

tgrand

Use a smart charger to charge the battery banks. On the load side use a Xantrex controller as a load controller to protect the batteries. There are 2 point of views on the load controller and protection of batteries. My view... Better to protect your investment in batteries, for the few minutes you'...

tgrand

Before they do any changes, they must first clean things up. The User-Manager still continues to use 2 databases. Try clearing stats in web, and you will notice the stats in the console continue to accumulate without having been cleared. Lots and Lots of clean-up to do. As well User-Manager developm...

tgrand

That is the worst advise possible!!!
You have obviously NEVER tryed this......

You can attempt this, however, be prepared for hours (possibly days in our case) of adding profiles for each user through the web interface (the only way).

tgrand

power is constant. it is like having a litre of water pour it into a wide glass and the level of the water is low; pour it into a narrow glass and the water level is high. Get a simple book on audio amplifiers and get a grasp of power, it really is simple. 10db using a 5MHz channel is going be relat...

tgrand

Check that you are using both chains for tx as well as both for rx.

tgrand

do a google search for plug computing and plug pbx.

tgrand

The signal to noise should not be effected by fresnal encroachment, however the integrity of the signal will most certainly be affected. What is being refered to as the 1st fresnal is the full field or full power. The second Fresnal is the half power or ~70% field. Encroachment into the first frezna...

tgrand

Looks identical to one of ours. It was confirmed that an electrical transformer approx. 30 meters away was directly hit and this was the result. The surge went through the electrical wiring and through the poe to the RB. The radio card which was in use continues to work like a champ, while we had to...

tgrand

5.2 had this problem for us.
Upgrade to 5.4 or 5.5.

This will fix your problem.

tgrand

Correct me if I am wrong..... You are trying to connect several sector antennas to a single radio? If this is true use a signal splitter. If you use a signal 2 output splitter the output power is dropped by 3db on each output. a 3way is about 4.5db loss, adn a 4way is 6 db loss. so if you are using ...

tgrand

It is because V5 requires a User have a profile defined. Unfortunately there is now way in which to add the profile from the command line making V5 usermanager completely useless unless 1) you ar just starting out and only have a few clients to enter 2) self abusive and wish to add profiles to thous...

tgrand

Those settings are dependant upon your profiles.
The server profile should have a local address as well as the dns servers defined.
I have noticed that in many examples these appear to be missing.

tgrand

Was told this was going to be fixed back at 5.2.
Now 5.5 and still I can not set the profile for a user when adding a user from the console..

What is the ETA on this???

Also are you going to fix the Dual Database Issue?

tgrand

These units are rockets..

tgrand

Be sure that the device you have plugged into the port has an appropriate default gateway set.

tgrand

When I had stated So when setting up IPV6 it must be tackled by completely ignoring the IPV4 setup (with some exceptions [not going there]). Here is an example: He can bond 2 dsl lines, but also create a virtual bridge over IPV4 to a machine Not on his physical network. That virtual bridge CAN bridg...

tgrand

If rudy is doing the nating then he just has to run dual stack. I have Natted, as well as Public unNatted IPV4 as well as a dual stack IPV6. IPV6 must be viewed as another internet (Internet 2.0). Completely incompatable to IPV4 (Internet 1.0). It just happens to work over the same Physical media. S...

tgrand

As far as delivery of address space to the client, I am also perplexed, aside from giving them a subnet and have them self confgure their own routers. As an ISP you control the addressing assigned to the clients outer interfaces, but are there not legal ramifications and liabilties in having control...

tgrand

Best thing to do is to start to conceptualize IPV6 and worry about the symantics later. First off, I would recommend thinking of IPV4 as Hexidecimal (ie FF:FF:FF:FF = 255.255.255.255). Now IPv6 is simply 4 hex digits 8 times as oppose to ipV4 being 2 Hex digits 4 times (ie ffff:ffff:ffff:ffff:ffff:f...

tgrand

/125, /124, /123

No different than V4 with exception to the fact that you have alot more addresses.
Set routers statically and use OSPF-V3 to route.

Why use DHCP anything, when auto config works perfectly fine?

IPV6 is an internet unto itself.

tgrand

Bump...

Any of this going to be fixed??

How do I script the addition of users if I can not specify a profile in the script?

Why are there 2 databases for the statistics, one for terminal window and one for web interface?

Doesn't anybody else have issue with this?!?

tgrand

uhhhh.... :? Don't do that!!! Easy way to overheat/overdrive the amp and/or create noise. You need to keep in mind that the output power is the total power out both connectors at a standard 20MHz wide signal. 25db - ~3db for Dual connector - ~3db for 40MHz wide channel = ~ 19db It likely not precise...

tgrand

The User manager Web interface does not correlate to the terminal commands either. If I reset-counters from the command line, then print the user details, the stats are reset. The web interface stats only reset if reset from the web interface. This is a real problem as I have extensive scripting to ...

tgrand

My APs are set to access A Usermanager router for Radius. Have created a new 5.2 Router with Usermanager, imported a database from v3 user-manager and set an AP to use the new user-manaager. My Users on the AP are now not authenicating, the AP`s radius log shows Profile not found error. So within Us...

tgrand

WHMCS works well.
You have to be prepared to do some Mikrotik API coding in PHP to integrate UserManager with WHMCS.
Or if using a radius server write some PHP SQL code in order to integrate.

tgrand

Every situation requires different settings. It is not just something that can be exchanged. I would venture to guess that the rx signal on either end of that 500m connection is stronger than -50. First thing I would recommend is to lower your tx-power in increments and check your speeds. Work to tr...

tgrand

Turns out I just needed to open a new terminal and do:
/system routerboard upgrade

Firmware was not apparently at a level so as to recognize the onboard wlan interface.

tgrand

Any word on ETA of v5.0rc12?

tgrand

We have a pair of systems with i5 QuadCore with 8 Copper GigE Ports.
We can run Bandwidthtest from device to device and do 1Gbps in both directions without going over 2% CPU resource, and that is with connection tracking on.

tgrand

I purchased a handful of RB711-5Hn-M's some with lvl3 and some with lvl4 licenses.

All RB711-5Hn-M's with level3 are missing the wireless interface, while all level4s are fine.

Is there a known problem?

Upgrading the RosV5rcxx does not resolve the problem.

tgrand

Yes but is the interface on the particular RB433AH physically connected to the local network in which the Device he wishes to wake resides?

Have a look at a WOL packet....
There really is not alot that can go wrong.

tgrand

Wake on Lan is an etremely simple packet.
If it does not work, I would recommend testing the capabilities of your device you wish to wake using a PC application on the local net of the device.

There are MANY free WOL packages with source code available.

tgrand

My recommendation is to split your pppoe-pool into 2 seperate pools. One for dynamic assignment and the other for static assignment. Statically assign ips to your client from the static pool by specifying an IP to each ppp user/profile. Once assigned you can delete the <pppoe-user> interface from th...

tgrand

System Specs: Dual Core Atom D510, 2Gig Ram, 120Gig sata2 SSD. User manager doesn't work as the changelog would indicate. [admin@Test] > tool [admin@Test] /tool> user-man [admin@Test] /tool user-manager> user [admin@Test] /tool user-manager user> pr Flags: X - disabled, A - active, I - incomplete er...

tgrand

1 <1 ms <1 ms <1 ms 2001:470:1f11:bbe::1 2 31 ms 29 ms 57 ms QuickStream-1.tunnel.tserv9.chi1.ipv6.he.net [2001:470:1f10:bbe::1] 3 28 ms 27 ms 27 ms gige-g3-4.core1.chi1.he.net [2001:470:0:6e::1] 4 50 ms 51 ms 46 ms 10gigabitethernet2-4.core1.nyc4.he.net [2001:470:0:4e::2] 5 120 ms 118 ms 127 ms 10g...

tgrand

instead of the following: $API->write('/ip/hotspot/user/set', false); $API->write('=name=mv99', false); $API->write('=password=phptest'); Do the following: $API->write('/tool/user-manager/user/print', false); $API->write('?name=mv99'); Then parse out from the return data the field .id and use the va...

tgrand

from your web browser access the router by IP.
On the page that is displayed, download winbox.

I would recommend upgrading to 4.16 first as it is the latest V4 version and it will include the latest recommended version of winbox downloadable through the web interface of the router board.

tgrand

NORMIS...

I think your resources are a little maxed out on that RB450G.....
You might wish to check into that.....

tgrand

Why would you downgrade your rb450g ??
the OS on that originally should have been v4 ( or possibly v3 ).

You claim to be running a v2 ?!?

EDIT:
And how is it you have 520 MB ?!?

Something is amiss......

tgrand

One of the most important this to note:
Amplifiers amplify EVERYTHING, including the noise.

tgrand

To everyone;

Have a happy and prosperous New Year!

tgrand

press and hold the reset button while you power up the rb750
it will try net booting (Netinstall)
Reinstall the appropriate packages.

tgrand

Try unselecting some of your lowest datarates.
Retransmits may cause datarate scaling. which will at times be worse for performance than the retransmits.

I recommend supporting the lowest rate.

tgrand

try aes encryption instead of psk.
aes is hardware encryption while psk is software encryption.
making aes more efficient.

You can also try specifying appropriate frequencies in a scan list, which will shorten the reconnect delay.

tgrand

If you are dealing frequently with long term outages which a UPS does not accomodate, then perhaps you should consider a Backup Generator with a Bypass switch to your panel.

tgrand

your probably running with 10Meg or 5Meg channel widths.
Just ignore the ghosts the client will connect to the highest signal.

tgrand

Sounds like the 5.0rc1 nv2 wireless bug.
Are you running v5.0rc1 and nv2 wireless mode?
If not then what version are you running?

tgrand

Still must disable periodic calibration.

tgrand

disable periodic calibration on your advanced tab.
Calculate your ack timeout value and hard code the ack timeout.

tgrand

Do a google search for leeky coax.

leaky not leeky

tgrand

You say you wish to broadcast on other router...
What is the config on this other router.

Should it not also have pim setup?

tgrand

Please fix the watchdog so that it creates a supout file.
This way the NV2 protocol can be debugged.
This would allow me to have the supout available from the client as well as the AP.
It also reboots the client and AP so minimal downtime is experienced.

Win Win.... If you can fix the watchdog.

tgrand

Your not going to get close with 5GHz unless it is N.
try the R5Hn, R52Hn, or XR71

tgrand

I can verify that on 433 and 411 Routerboards all appears to be working well so far. The posted V5rc1 is performing Excellent over the Prerelease V5rc1. We are using NV2 nstreme on 2.4GHz-10MHz. We also have a backhaul link we are testing using 5GHz-only-N using NV2-nstreme and wds, and it is perfor...

tgrand

Here is a climb I am sure all of us can appreciate.

http://www.youtube.com/watch?v=uhtgsAXm ... r_embedded

tgrand

Torch always has 0 bps for TX.
WatchDog Timer will trigger if an IP address is specified, even though enabled is unchecked.
NV2 still freezes from time to time.

tgrand

Been using RC1 for P2MP works great.
AP did freeze with neer frequency interference which was resolved.

tgrand

Use another mikrotik router and route your network address space throught a tunnel.
Possibilities are: eoip bridge, ppp bridge of some type, etc.

tgrand

The client is also a transmitter, however the ack timeout on the client should be set for the client distance. Only the AP should be set for the furthest. As for rts/cts Just set the AP for cts to self. As far as nstreme; it has come a long way, and performs rather well. With that said, nstreme does...

tgrand

Use WPA2 PSK and aes cmm for your unicast and group cyphers. Use a complex string for your Key. Using aes offloads the work onto the wireless card, which has descrete logic to handle the encryption. If you merely use encryted pppoe tunnels then the router board is tasked to handle encryption. Hence ...

tgrand

pppoe encryption is just encrytion over the tunnel.
If someone can connect to the AP they will potentially try and try and try again to do whatever it is they want to do.
This can and will effect the performance of your AP.

tgrand

Every transmition requires a receive of an acknowledgement (does not matter which radio Client or AP). The ack timeout is the amount of time from transmition before an ack can be expected to be received. If this does not happen withing the acktimeout setting, the the transmitted packet is assume to ...

tgrand

Set your ACK timeout on your AP to be that of your furthest Client (Highest ACK timeout).
When the ACK go above this number the client will disconnect automatically.

tgrand

It will also double or triple your latencies or worse on your whole access point.

tgrand

Pretty Much the same. You do however need to consider ice loading when figuring the load aspects of the tower. Signals 2.4, and 5.8.... Never had problem with signal degredation, with exception to thick, fast, and wet sleet. Rain is much worse to deal with. It is possible to get snow and ice build u...

tgrand

It is disheartening that this thread turned into something other than the problem at hand. I already changed antenna, no luck Already changed polarity V to H, no luck Is it possible if the RX Sensitivity in AP side was damaged ? So AP could not hear Client clearly. Please advice. I already changed a...

tgrand

Routers just pass the data on to the next hop, therefore routing public addresses is not a problem at all.
I would suggest using OSPF for the routing protocol and use PPPoE to connect the device (Biometric Scanner).
Have your Gateway provider route the public address through your gateway address.

tgrand

Be sure to open terminal window and type: sys rou upg answer yes, then do a system reboot. This ensures that the boards firmware is up to date. If you continue to experience the problem, try reseating the radio cards. If the problm persists the try moving the cards to a different mpci slot. If still...

tgrand

On a side note regarding multiple radio cards in a single enclosure: RF signals bounce around within an enclosure, these reflections can also cause gain within the enclosure. Good practice in these scenarios is to line the inner surfaces of the enclose with microwave absorbing materials. The drawbac...

tgrand

Do a uni-direction test in one direction then in the other.
Post the ccqs in from each test.
I would be inclined to think that one direction is impacted more than the other.
This would indicate that one antenna is too close to another antenna on a near frequency.

tgrand

Yes lower the TX-Power at each end by approximately 20 db.
Aim for around -60db in each direction.

tgrand

Perhaps Canada?
rotflmao

tgrand

Default authenticate is unchecked on one of the devices with no entry on the access-list or connect-list.

tgrand

Problem should get somewhat better come night fall.

tgrand

SOLAR BLAST: A magnetic filament on the sun erupted yesterday, May 24th, and the blast hurled a coronal mass ejection (CME) in the general direction of Earth. NASA's Solar Dynamics Observatory recorded the action around the blast site in 10xHDTV resolution: http://www.spaceweather.com Possibility.....

tgrand

If you use a charge controller and run off battery you could use one of these (see link below) to sense the primary supply, when it is no longer available it can toggle a relay which switches over to the secondary supply, when the it senses the primary it will switch back automatically. You have to ...

tgrand

By vertical seperation the assumption must be made that it is on a vertical structure ie. tower.
On building tops the option may be either vertical or horizontal.

Spacial diversity is the key.

Which is better is dependant upon the environment.

tgrand

You may have significantly better luck if you properly line the enclosures with Microwave absorber material.

hxxp://www.cumingmw.com/Product%20Applications ... ssion.html

My Appologies:
I did not read changeip's post about the seperate enclosures.
Perhaps someone else may benefit from this.

tgrand

Prioritize your TCP ACK Packets.

tgrand

Read the following post.

http://forum.mikrotik.com/viewtopic.php?f=7&t=32143

There are some good recomendations on tweeking 802.11n links.

tgrand

Open a command line and run the following command:

interface pppoe-server export file=pppoeconfig

It will create a text file. Open this text file and copy the contents, then paste it into the forums.

This way we can help diagnose the problem.

tgrand

Read the following post:

http://forum.mikrotik.com/viewtopic.php ... be#p200889

tgrand

Siganal strength of -48 is quite HOT let alone -40.
I would recommend you try to lower your output power to get to -58 to -64 range.

This may or maynot solve your problem, but will most certainly elimate one contributing factor.

tgrand

You should be blocking bogon addresses from the internet.

tgrand

Have you tried a serial cable to log into the bootloader?
If you can do this, then set it to boot from ethernet, and use netinstall to install OS.

tgrand

SNR = Signal to noise ratio.
Signal-to-noise ratio compares the level of a desired signal to the level of background noise. The higher the ratio, the less obtrusive the background noise is

A goal would be to maintain all your backhauls with 20db or more Signal to noise.

tgrand

Rain will affect all microwave links.
The trick is to have enough margin to account for such events.

What are your signal strengths and SNR?

tgrand

An R52 + 24db Grid 200 meters from R52 + 24 Grid?
You should be getting Way higher than -62/-67, even with a tree in between.

Did you reduce the output power?

tgrand

try using an alternate dns address on your stations rather than using the mikrotik dns.

tgrand

Truth of matter is that full duplex can only TRUELY be accomplished with ASIC or discrete logic.
Once a CPU is introduced, TRUE duplex is not possible, but EXTREMELY close.

That is the true technical fact of the matter.

tgrand

Technically yes, I know this. I have reverse engineered integrated curcuits, so TECHNICALLY I am VERY aware of what the limitations are. When some one asks for 100Mbps full duplex, they are usually asking for 100Mbps Symetrical. And much of the time they are only interested in the TECHNICAL details ...

tgrand

If you notice: When using a 5Mhz wide channel you will see 2 lobes (or ghosts). When using a 10Mhz wide channel you will only see 1 lobe (or ghost). you simply ultimately reduced the amount of interference between your sectors by going to a 10 Mhz wide channel. Also you increased your range by 3db (...

tgrand

I agree that anything 802.11 is half duplex by nature. With that said; When I can do a routerboard to routerboard TCP speedtest over N and accomplish 90Mbps UP and 90Mbps Down simultaneously, then I would have to make a statement that it is purdy dang close to full duplex for the likes of me. With q...

tgrand

Not entirely accurate.
802.11n can receive on one antenna while transmitting on the other.

Does this sound like full duplex to you?

tgrand

I would still suggest that you follow RK's advise and use a switch, rather than a hub.

tgrand

6 of those hops are wireless

tgrand

Set the center channels into the scan list. Take advantage of it, as that is why it is there. When the signal is good enough you will see signal lobes on 5 and 10 Meg channels. It would appear that it does not matter which radio cards are in use. It seems that using bandpass filters degrades the per...

tgrand

MediaNet,

Just an FYI, View image.

tgrand

OK 9 HOPS
But that is not the point.

The point is that the PC must be slow in response.
Or there is ALOT he has not shared.

tgrand

try it to a different PC.
I can get those ping speeds over 12 wireless hops.

tgrand

Licensed frequency band maybe?

tgrand

Shouldn't need to.
What is the radio card?

tgrand

viewtopic.php?p=187823#p187823

tgrand

try the broken wireless fix.
http://forum.mikrotik.com/viewtopic.php?f=7&t=37734

tgrand

If you are running V4.X then browse through the forums.
There are very recent threads which describe what is required to fix broken wireless.

tgrand

Would be nice to be able to right click an element and select SubMap.

tgrand

read the following post:

http://forum.mikrotik.com/viewtopic.php?f=7&t=37734

tgrand

Wouldn't have added it to the wiki if it didn't.

tgrand

Had the same problem. Did a reset config on the wireless interface of my AP. Then reset it up. Everything worked fine afterwords. After apgrade of client the only option is to do the reset and reconfig using script. Be careful to reenable the interface in the script, as a reset config disables the i...

tgrand

I do not recall EVER receiving a board with 4.4 preinstalled.
This script has worked for me on many radios.

If anybody tries this please post your results.

tgrand

Try this:

http://wiki.mikrotik.com/wiki/Fix_Broke ... an_Upgrade

The script is meant for clients or remote (other end of a wireless link) radios.
You will still get the gist of what has to be done.

tgrand

Try this:

http://wiki.mikrotik.com/wiki/Fix_Broke ... an_Upgrade

If it is an AP you have upgraded then do it through ssh instead of a script.

tgrand

have you tried to mac-telnet?

tgrand

If I am not mistaken the RTS/CTS is off by default.
Uncheck the off box.

This will enable the client to request to send data.
The problem you are encountering is due to the fact that this client continues to broadcast, ultimately deafening the AP to the other clients.

tgrand

leaves on trees

tgrand

One more point to consider is that Vertical pole does penitrate light foliage better than horizontal.

tgrand

What is the noise floor on the AP, under status?
You may need to change the channel.

tgrand

Peltier Junctions are super easy to impliment and all one has to do is reverse the polarity and it becomes a cooler instead of a heater. With that said it is true that the operating temp range is more than sufficient. Longevity isn't even a concern, as by the time the rb fails, it is time to upgrade...

tgrand

hxxp://www.inbthermoelectric.com/
hxxp://www.electronickits.com/kit/complete/peltier/ck500.htm
hxxp://www.peltier-info.com/

Just google search on peltier junction.

tgrand

BandwidthTest from rb433 to rb433 is what is creating the load.
connect a PC at each end and test from PC to PC routing through the router boards.

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