MikroTik

tibobo

Want some more proof : read viewtopic.php?f=14&t=122446
The fix is easy : just move your whole datacenter from ESX to hyper-v.

tibobo

Just forget it. If you don't sell their products by the thousands, Mikrotik will just ignore you. Not only won't they add new knobs to give you more control, but they won't even fix any of their bugs. 8 months that I reported Dude's SNMPv3 breakage and non conformance to RFCs. I never used it before...

tibobo

Hello all! Newbie question here. where can I find radiation patterns of current mikrotik wireless SOHO devices, in just a graphic format? I mean, no need for a file, just for picking a correct device for my scenario. But on product pages I cant seem to find the radiation pattern. I looked into broc...

tibobo

what will prevent me from creating this tool :
cmd /c "echo [Device.Password] && pause"
Huh... Readonly rights?

OK, agreed

tibobo

Guys, let's be reasonnable. I can create my own tools and use [Device.Password] which is nice since I do not have to type it the whole day long. Event if MT guys were to cypher the password in the DB and in the XML and wherever you can see it, what will prevent me from creating this tool : cmd /c &q...

tibobo

It looks like Dude is using AES256 or at least not standard AES128 On Cisco routers, it works : - if you use just auth and no priv - if you use auth and AES256 priv It says that the packet is badly crypted if you set it for priv with AES128. I don't know exactly what the moving pieces are. On OneAcc...

tibobo

We are able to graph various aspects of a device by creating services and probes, etc... But on the links, we cannot graph multiple datasources, only the bitrates are graphable. We can of course print the current values/rates on the link label, but we have no history. Creating datasources and graphs...

tibobo

+1 It could be an option to consider a submap like a device and then "down" the map containing the submap when the submap "downs" because one of its device fails. I think it should be an option because when you have tens or hundreds of maps/submaps in big networks any device fail...

tibobo

Mikrotik ? Please ?

tibobo

I would really like to get proper MPLS MTU handling in ESX viewtopic.php?f=14&t=122446&p=620492#p606682
TSO and LRO need to be switched off in the VMXNET3 driver…

tibobo

Yeah, and it's quite discouraging to see how long changes like this (which seem to be really minor adjustments) can take to reach the RC…
I'm still waiting for what seems to be a simple switch change : viewtopic.php?f=14&t=122446&p=620492#p606682

tibobo

Thanks Tazdan.
I can't understand what could take so long.
It really looks like a simple switch to change.
For now CHR is basically unusable for MPLS …

tibobo

No, I'm not using Comcast, I'm using Online.net, a french hosting company : https://www.online.net/en They chose to implement IPv6 PD the following way : https://documentation.online.net/en/dedicated-server/network/ipv6/prefix Unfortunately, I cannot change the DUID in RouterOS, so I had to change t...

tibobo

What should work (learned from MikroTik support) is to factory reset the device. If you restore the text backup (RSC file), the DUID is regenerated first time you use DHCPv6. Not sure what happens with a binary backup though. This works but still doesn't address the case where you have to set up an...

tibobo

Hi Peter, Same problem here. I found this post regarding your question : https://forum.mikrotik.com/viewtopic.php?f=2&t=120801&p=593966&hilit=duid#p607902 I was running vmware so I could change the interface mac-address and check that the DUID also changed. It didn't solve the problem : ...

tibobo

At first it will be in RC version, then it is possible that change will be pushed to bugfix also.

Any news ? Did I miss that in the changelogs ?

Thanks !

tibobo

TSO, GSO and GRO need to be disabled also on guests, so you will have to wait for new CHR build.

OK, that explains it.
Do you know it it ill make it in bugfix ?
And if not, will it be in the next current ?

tibobo

On ESXi host : login as: root Using keyboard-interactive authentication. Password: The time and date of this login have been sent to the system logs. VMware offers supported, powerful system administration tools. Please see www.vmware.com/go/sysadmintools for details. The ESXi Shell can be disabled ...

tibobo

I already did it when running on ESXi5.5 U2 (see post #18).
I think tazdan did try it too, but I don't now on which version

Is this behavior also observed when using vswitches without physical nics ?

Anyway, we recently upgraded to esxi 6.5 buid 5310538.
I wil give it a try and keep you posted.

tibobo

Some more testing this morning, on KVM since it was easier to do without side effects :
I changed the NIC types from virtio to e1000 just to make sure the problem isn't with virtio.

I get exactly the same behavior.
So the problem doesn't seem to be in the virtio driver.

tibobo

OK, I can reproduce it with KVM on totally different hardware.
I'm puzzled !
Does nobody use CHR to push MPLS labels ?

tibobo

BTW if you want to try TSO/LRO settings : https://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=2055140&sliceId=1&docTypeID=DT_KB_1_1&dialogID=512450636&stateId=0%200%20512464428 https://kb.vmware.com/selfservice/search.do?cmd=displayKC&a...

tibobo

I built a test evironment last week : 4 brand-new CHR, with minimal config running, interconnected through separate vswitches with no physical interfaces (so no nic driver involved), no vlans, tested MTU up to 65500, avoided btest which is buggy with tcp on chr (already filed a support case for that...

tibobo

BTW if you want to try TSO/LRO settings : https://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=2055140&sliceId=1&docTypeID=DT_KB_1_1&dialogID=512450636&stateId=0%200%20512464428 https://kb.vmware.com/selfservice/search.do?cmd=displayKC&am...

tibobo

More testing : Bandwidth test from CHR4 to CHR1 (loopback), with explicit-nulls OFF (on all CHRx). packet size 1200 bytes, direction both, tx speeds (local & remote) 5M UDP : 5M TCP with 2 sessions : less than 1kbps, CPU 50% showing half as unclassified in the profile tool (I opened a case for ...

tibobo

I tried to remove vmware TSO and HRO and reboboted the ESXi host as suggested in some vmware docs. No change. I setup a traffic generator to test the throughput through CHR1-CHR2-CHR3-CHR4. I get pretty good speeds going through this whole chain in UDP, but my TCP fetch is still ultra slow. [admin@C...

tibobo

More testing : Bandwidth test from CHR4 to CHR1 (loopback), with explicit-nulls OFF (on all CHRx). packet size 1200 bytes, direction both, tx speeds (local & remote) 5M UDP : 5M TCP with 2 sessions : less than 1kbps, CPU 50% showing half as unclassified in the profile tool (I opened a case for t...

tibobo

Upgrading to RC or going back to bugfix doesn't change anything.
The problem doesn't seem to be version related.

Key factor seem to be the protocol :
UDP works well wether you have explicit-nulls or not,
TCP seems to be affected.

tibobo

I think this will make me crazy.... I just tried on v6.39.2 with the following brand-new from scratch setup. CHR1 <-> CHR2 <-> CHR3 <-> CHR4 <-nompls-> BTEST4 (also CHR) All links but CHR4 to BTEST4 are MPLS enabled. All CHRx are configured with explicit-null and loop-detect, using a loopback (bridg...

tibobo

Which VNIC are you guys using in VMWARE. VMXNET3 or something else?
I am using VMXNET3 - have tried also E1000E with no change in the result.

Just to be sure, what version of CHR are you using ?
I tried with the new bugfix (v6.38.7) and there's still the same problem.

tibobo

I have exactly the same issue here, i have labbed it up and asked MT support for help and they say check MTU and driver for nic in vmware.. Did you change the vSwitch MTU in vmware ? Did it change something for you ? this is causing major issues for me progressing a project i have on the go. please...

tibobo

There are 3 different releases: bugfix, stable and release candidate. Is that so difficult to understand? That is precisely what I say. 6.38.7 (Bugfix only) 6.39.2 (Current) "STABLE" 6.40rc24 (Release candidate) The bugfix Should be on the stable (assumption without errors) Umm no, bugfix...

tibobo

VMXNET3.
It works like a charm for everything else.

tibobo

Without explicit nulls, are any labels actually applied when it's so few hops in the link? No labels applied without explicit nulls thanks to penultimate hop label popping. Perhaps some fragmentation is occurring? You could try smaller packets while bandwidth testing or do a proper packet capture t...

tibobo

Hi, I've setup an MPLS between 2 routers : one is a CCR1009 the other one a CHR (with a PU license just for the record). Both are running the latest bugfix release : 6.37.5. The link between both routers has 200M bandwidth, <1ms latency. MTU is not an issue on this link (link MTU is 1590, MPLS MTU s...

tibobo

Strange, cause I'm running almost the same without issues for months. Are you sure of your vSwitch configuration ? I would try with a single port first between the R630 and the CCR1072. If you use VLANs check that your virtual port group matches it. Do not tag on the 1072 with service tag, ESX might...

tibobo

My first thought would have been to try some VRF setup but this has also some drawbacks which can be non trivial to solve. So I came up with another design : just reroute whats coming from the 2 families LANs and NOT going to your printer network to their respective internet gateway. Basically : /ip...

tibobo

Hello, I experience problems reaching the forum with IPv6 from my home network. It looks like the last hop is really slow. At the end of the day, at home, I end up disabling IPv6 on my laptop to be able to browse the forum, otherwise, it won't even display. It's the same laptop I use at work (where ...

tibobo

I hadn't reported it yet for quite the same reasons as macsrwe, but this problem was there for at least 2 months.
I guess if nobody reports it, MikroTik will never know.
In the meantime I have reported it too. Sorry for double reporting.

tibobo

Hello, Would it be possible to allow us to change the MAC address of VLAN interfaces ? It would be useful for example when the provider of a level 2 WAN link doesn't support VLAN independent MAC address learning. I know there is a way to achieve almost the same thing by creating a bridge, setting th...

tibobo

+1
This has been a problem for some time already.

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