Community discussions

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by Vooray
Mon Aug 05, 2019 12:30 am
Forum: Forwarding Protocols
Topic: BGP Multihop on OSPF failover scenario
Replies: 2
Views: 452

Re: BGP Multihop on OSPF failover scenario

eBGP on top of OSPF? ECMP without redundant links (you stated that Rees-Prouty is a backup route)?
No idea what are you doing.
by Vooray
Mon Jul 22, 2019 10:46 pm
Forum: RouterOS v7
Topic: v7 Linux Kernel version ?
Replies: 3
Views: 853

Re: v7 Linux Kernel version ?

It is even possible that there will be v7 linux kernel for v7 routerOs
by Vooray
Sat Jul 13, 2019 10:35 am
Forum: Forwarding Protocols
Topic: How to correctly work an OSPF multi area network?
Replies: 3
Views: 482

Re: How to correctly work an OSPF multi area network?

You must have a0, since it holds all abrs.
And you have wrong circles drawing - abrs splits areas.
by Vooray
Fri Apr 26, 2019 9:02 pm
Forum: General
Topic: Firmware upgrade
Replies: 6
Views: 409

Re: Firmware upgrade

Feel little bit confusing about this process. If we have an option to upgrade or not - no questions. But if i have to reboot device twice manually i need a straight arguments for that. And i don't like idea that something could be changed on occasion reboot, if i decide not to make second reboot aft...
by Vooray
Thu Apr 25, 2019 9:52 am
Forum: General
Topic: Firmware upgrade
Replies: 6
Views: 409

Firmware upgrade

Hi All!

What is an idea behind second reboot for firmware update after update installed? Why this is not done in one step?
by Vooray
Tue Mar 19, 2019 9:45 pm
Forum: Scripting
Topic: ISP failover script
Replies: 4
Views: 893

Re: ISP failover script

Netwatch send only one echo request and react if dont get response. This scary me alot. It is pretty normal, that some pings can be lost sometimes.
by Vooray
Tue Mar 19, 2019 9:39 pm
Forum: Forwarding Protocols
Topic: bgp prefered route
Replies: 3
Views: 347

Re: bgp prefered route

So, what is an idea behind setting two bgp peers with views?
Prefix length is not something about bgp route selection process.
If you keep ISP2 for failover purposes keep default route only and filter out all other prefixes, or ask peer to announce default only.
by Vooray
Mon Feb 11, 2019 9:32 pm
Forum: Forwarding Protocols
Topic: Create prefix list from learned peer routes
Replies: 7
Views: 625

Re: Create prefix list from learned peer routes

This looks pretty legit. You dont have to worry about it - that is how BGP works. Best as-path will be chosen.
by Vooray
Mon Nov 12, 2018 10:05 pm
Forum: Scripting
Topic: ISP failover script
Replies: 4
Views: 893

ISP failover script

Hey All!

Did some labs on the weekend and made another one isp failover script.
Wanted to share it in case someone is interested :D

https://github.com/vooray/ros-isp-sla/b ... sp-sla.rsc
by Vooray
Mon Oct 15, 2018 8:09 pm
Forum: Forwarding Protocols
Topic: OSPF Interface Cost not working
Replies: 1
Views: 455

Re: OSPF Interface Cost not working

Did you add cost on the other side of the link?
by Vooray
Wed Oct 10, 2018 10:58 pm
Forum: Forwarding Protocols
Topic: Many virtual machines on one host - do not see each other
Replies: 1
Views: 336

Re: Many virtual machines on one host - do not see each other

Hey!

Dont have kvm knowledge, but i can definitely say that communication between hosts on the same subnet does not involve routing (and router).
by Vooray
Sun Sep 02, 2018 7:09 pm
Forum: Forwarding Protocols
Topic: Migrating from switch to Mikrotik Router
Replies: 10
Views: 956

Re: Migrating from switch to Mikrotik Router

Thanks for your comments, IPANetEngineer!

It is pleasant to read such informative answer.
When i was writing about switchstack i was thinking about "entry level" stacks.
Here, i presume, you are talking about high grade stacks, that can be maintained without downtimes.
by Vooray
Sat Sep 01, 2018 11:33 pm
Forum: Forwarding Protocols
Topic: Migrating from switch to Mikrotik Router
Replies: 10
Views: 956

Re: Migrating from switch to Mikrotik Router

Making switch stack a single point of failure is questionable design. Ill better stick to more disagregated design.
by Vooray
Fri Aug 31, 2018 6:17 pm
Forum: Forwarding Protocols
Topic: BGP and fail over
Replies: 3
Views: 744

Re: BGP and fail over

Depending on network scheme i would use bfd and inject two defaults in IGP with different metrics. If there are more than two routers of course.
by Vooray
Mon Aug 27, 2018 1:06 am
Forum: Forwarding Protocols
Topic: OSPF filter - need help
Replies: 2
Views: 520

Re: OSPF filter - need help

Theoretical.
If you dont need this route at R2 you should filter it in inbound filter on R2 _and_ this route has to be external.
by Vooray
Sun Aug 26, 2018 8:47 pm
Forum: Forwarding Protocols
Topic: Allocated smaller subnet to another router
Replies: 7
Views: 544

Re: Allocated smaller subnet to another router

Of course you can, but it does not have much sence. You already announce your /23 to the world.
You can stick /24 to another router in your intranet.
by Vooray
Sun Aug 26, 2018 7:48 pm
Forum: Forwarding Protocols
Topic: Allocated smaller subnet to another router
Replies: 7
Views: 544

Re: Allocated smaller subnet to another router

First router announce 20.0.0.0/23. Second router announce 20.0.1.0/24.
Or first announce 20.0.0.0/24, second announce 20.0.1.0/24.
by Vooray
Sun Aug 26, 2018 5:29 pm
Forum: Forwarding Protocols
Topic: Allocated smaller subnet to another router
Replies: 7
Views: 544

Re: Allocated smaller subnet to another router

Announce part of network at your second router. Just keep in mind, that some AS can filter out prefixes longer then /24
by Vooray
Fri Aug 24, 2018 10:13 pm
Forum: Forwarding Protocols
Topic: HELP - BGP dynamic route flickering [SOLVED]
Replies: 6
Views: 725

Re: HELP - BGP dynamic route flickering [SOLVED]

Did you ask remote site to check their bgp?
by Vooray
Fri Aug 24, 2018 6:21 pm
Forum: Forwarding Protocols
Topic: HELP - BGP dynamic route flickering [SOLVED]
Replies: 6
Views: 725

Re: HELP - BGP dynamic route flickering [SOLVED]

Hey!

You use multihop for bgp - is route to peer address stable?
You use update source vlan_nip_ubatuba. Is it stable?
Do you have anything interensting in your logs?
by Vooray
Wed Aug 15, 2018 9:05 pm
Forum: Forwarding Protocols
Topic: Juniper - Mikrotik LDP/BGP based VPLS
Replies: 9
Views: 1662

Re: Juniper - Mikrotik LDP/BGP based VPLS

Tested both Martini and Kompella between Jun, cisco and Mikrotik some months ago and it worked fine.
There is a good book on subject :this week mpls from day one and good article on mikrotik wiki.
by Vooray
Thu Jul 12, 2018 11:23 pm
Forum: Forwarding Protocols
Topic: BGP propagation time
Replies: 3
Views: 461

Re: BGP propagation time

Excuse my ignorance, dont have any experience with pppoe bras, but if you have just two devices, why you dont just make static aggregated route to your bras?
by Vooray
Wed Jun 20, 2018 11:43 pm
Forum: RouterOS v7
Topic: RouterOS v7.0 beta1 - when?
Replies: 565
Views: 137555

Re: RouterOS v7.0 beta1 - when?

Hmm.. heared that U named company released linux 4 based firmware for their routers. Just to mention. And, as i heared u can have frr on it. No hands on that equipment, but i keep my eye on it. And, as i track linux kernel changes, some descent work has been done in networking stack by guys from 6wi...
by Vooray
Mon Jun 18, 2018 12:16 am
Forum: Forwarding Protocols
Topic: MTU problem over OSPF-MPLS-VPLS implementation
Replies: 7
Views: 922

Re: MTU problem over OSPF-MPLS-VPLS implementation

Voip and gaming are short udp frames. Just my 2 cents.
Are you stuck with soft routing cpu issue?

Interested badly, cos i have to choose platform for the new project.
by Vooray
Tue Jun 12, 2018 10:35 pm
Forum: Forwarding Protocols
Topic: BGP performance workaround using route servers
Replies: 3
Views: 863

Re: BGP performance workaround using route servers

No idea why use mikrotik to overcome mikrotik problems. Just use soft router to next-hop to your l3 switch.
by Vooray
Fri May 25, 2018 5:53 pm
Forum: Forwarding Protocols
Topic: BGP and ROS 6 problem
Replies: 2
Views: 815

Re: BGP and ROS 6 problem

No idea. Delete it and recreate from scratch

Why do you use passive=yes?
by Vooray
Wed May 09, 2018 2:47 pm
Forum: Forwarding Protocols
Topic: Creating Communities to apply to BGP
Replies: 5
Views: 638

Re: Creating Communities to apply to BGP

Hey. Ddos protection topic is more complicated than bgp communities. And i dont think, that you can solve it buy splitting traffic on national for unfiltered and international filtered. More to say, this ddos international traffic can be originated in your country but with spoofed sources. Do you us...
by Vooray
Sun May 06, 2018 2:28 pm
Forum: Forwarding Protocols
Topic: Creating Communities to apply to BGP
Replies: 5
Views: 638

Re: Creating Communities to apply to BGP

The only way to control your announce propogation on upstream side is communities (yes, you can ask your isp to change announcement scheme for you personally, but it is not desired). If your isp does not support em, you can not do anything on your side. Splitting traffic on national and internationa...
by Vooray
Wed Apr 18, 2018 11:04 am
Forum: General
Topic: vrrp and bgp
Replies: 1
Views: 338

Re: vrrp and bgp

It will work.
Just put the switch and use corresponding mask for vrrp address. Use existing gateway address as vrrp.
It will look something like this:
Image
by Vooray
Tue Apr 17, 2018 12:04 am
Forum: General
Topic: MUM Europpe announcements
Replies: 1
Views: 250

MUM Europpe announcements

No new routers at MUM Europe? There will be no new ethernet routers in 2018? Why?
by Vooray
Sun Apr 15, 2018 9:12 pm
Forum: Forwarding Protocols
Topic: Choosing short path for an internet address from multiple gateways
Replies: 5
Views: 533

Re: Choosing short path for an internet address from multiple gateways

Speaking theoretical if you redistribute your full views into ospf, then yes. But i have not heared any success stories on doing that.
by Vooray
Fri Apr 13, 2018 11:22 pm
Forum: Beginner Basics
Topic: How to clear log
Replies: 37
Views: 76979

Re: How to clear log

Thanks, pe1chl! It worked!

Anyway, i believe this should not be hard to implement as command rather then workaround.
by Vooray
Thu Apr 05, 2018 1:18 pm
Forum: Beginner Basics
Topic: How to clear log
Replies: 37
Views: 76979

Re: How to clear log

Except hiding malicious actions, what purpose would this have?
Cos i just entered password instead of login. And my password is in log file! And everybody can see it!! And i can not delete it!!!!
This is my router and i wish i can do some things with it with some commands.
Please, implement.
by Vooray
Tue Mar 27, 2018 11:10 am
Forum: General
Topic: Network diagram software?
Replies: 8
Views: 2218

Re: Network diagram software?

draw.io
by Vooray
Mon Mar 26, 2018 5:11 pm
Forum: Forwarding Protocols
Topic: OSPF with VRF
Replies: 4
Views: 1118

Re: OSPF with VRF

Interface should be dynamically added if you created corresponding ospf network.
You created separate ospf instance for this ipvpn, right?
by Vooray
Mon Mar 26, 2018 1:31 pm
Forum: Forwarding Protocols
Topic: OSPF with VRF
Replies: 4
Views: 1118

Re: OSPF with VRF

Try get some logs
/system logging add topics=ospf,!raw
And please, paste configs with code formated
by Vooray
Sun Mar 25, 2018 9:18 pm
Forum: Forwarding Protocols
Topic: Static routing help needed
Replies: 4
Views: 632

Re: Static routing help needed

set corresponding gateways and masks on your 172.30.30.2 and 172.29.29.2 hosts.
by Vooray
Tue Mar 20, 2018 7:22 pm
Forum: Forwarding Protocols
Topic: BGP traffic out peer priority
Replies: 6
Views: 1675

Re: BGP traffic out peer priority

So, there is any option to reach a external peer using the same upstream that they are using to reach me. In general, NO. Internet is not symmetrical. Remember golden BGP ruler? Traffic belongs to AS it is curently in. But there are some mechanics that can help you engineer bgp traffic. You can set...
by Vooray
Fri Mar 16, 2018 7:27 pm
Forum: General
Topic: IP on Bridge and RIB behaviour
Replies: 4
Views: 425

Re: IP on Bridge and RIB behaviour

Thanks for your answer, Sob!

I have to think on it little bit more.
by Vooray
Fri Mar 16, 2018 4:04 pm
Forum: General
Topic: IP on Bridge and RIB behaviour
Replies: 4
Views: 425

Re: IP on Bridge and RIB behaviour

Thanks for your answer! Logs are clear (im on 6.41.3). I definitely see how it works, i can not get _why_ it works that way? Why im even able to assign ip address to slave interface in bridge? Little bit confusing, isn't it? May be there are special cases when i need to assign addresses this way? I ...
by Vooray
Fri Mar 16, 2018 1:41 pm
Forum: General
Topic: IP on Bridge and RIB behaviour
Replies: 4
Views: 425

IP on Bridge and RIB behaviour

Hey! Im trying to figure out why RouterOS behave in such way: I have a bridge: /interface bridge port> /interface bridge print where name =LAN Flags: X - disabled, R - running 0 R ;;; LAN name="LAN" And interfaces in it: /interface bridge port print where bridge =LAN Flags: X - disabled, I - inactiv...
by Vooray
Fri Mar 16, 2018 11:59 am
Forum: Forwarding Protocols
Topic: BGP multihoming - strange routing issue
Replies: 7
Views: 951

Re: BGP multihoming - strange routing issue

It looks like you had a problem with link to your 149.6.30.105 gateway. If you look at your first post - eBGP route 8.8.8.0/24 is not active. And AD is always > some protocol selection mechanics. # DST-ADDRESS PREF-SRC GATEWAY DISTANCE 0 ADb 8.8.8.0/24 172.16.1.246 200 1 Db 8.8.8.0/24 149.6.30.105 2...
by Vooray
Thu Mar 15, 2018 8:23 pm
Forum: Forwarding Protocols
Topic: BGP multihoming - strange routing issue
Replies: 7
Views: 951

Re: BGP multihoming - strange routing issue

Does RT2 have route to 149.6.30.105?
by Vooray
Fri Mar 09, 2018 9:15 pm
Forum: Forwarding Protocols
Topic: What Mikrotik product is the fastest for BGP with 10-gig load with 2 BGP feeds ?
Replies: 11
Views: 2150

Re: What Mikrotik product is the fastest for BGP with 10-gig load with 2 BGP feeds ?

Did not found how to pm here. Wonna honest answer? Go mx80 for your business.
by Vooray
Thu Mar 08, 2018 5:32 pm
Forum: Forwarding Protocols
Topic: TE- Failover Testing
Replies: 3
Views: 509

Re: TE- Failover Testing

2 mins is realy alot.
Can you add bfd to your setup and share results?
by Vooray
Mon Mar 05, 2018 4:30 pm
Forum: Forwarding Protocols
Topic: not getting all routes
Replies: 6
Views: 637

Re: not getting all routes

So, this is a question for your ISP provider.
46.38.56.0/21 is perfectly visible on internet.
https://stat.ripe.net/46.38.56.0%2F21#tabId=at-a-glance
by Vooray
Mon Mar 05, 2018 1:44 pm
Forum: Forwarding Protocols
Topic: not getting all routes
Replies: 6
Views: 637

Re: not getting all routes

Try
 /ip route print where "address_you_ping_here" in dst-address
on your bgp router.
May be your ISP, for some reasons, dont have prefixes you are looking for.
All prefix lengths are legit on Full View, but most ISPs drop longer then 24.
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