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nikola89381
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Joined: Wed May 17, 2017 4:46 pm

Mikrotik failover bonding for LHG60 Link

Tue Jun 22, 2021 4:16 pm

Hi Guys,

We have base stations with LHG60 Ghz links.

And becouse of stability we have between some base stations, backup link on 5 Ghz.

And when for examle becouse of snow, wireless on 60Ghz link is down, we manualy change VLAN to interface where are 5Ghz link. And this is works.

We want to automate this proces without scripts, and I try Mikrotik failover bonding.

But there is problem this not works good. I had packet lost. Only works when both ethernet interface on main links are not running.

Config looks on this way

Main Base station
/interface ethernet
set [ find default-name=ether4 ] name=ether4-main-link
set [ find default-name=ether5 ] name=ether5-backup_link
/interface bonding
add arp-ip-targets=192.168.112.2 link-monitoring=arp mode=active-backup name=bonding-main_router primary=\
    ether4-main-link slaves=ether4-main-link,ether5-backup_link transmit-hash-policy=layer-2-and-3
/interface vlan
add interface=bonding-main_router name=vlan223-main_to_second_router vlan-id=223
/ip address
add address=192.168.112.1/24 interface=bonding-main_router network=192.168.112.0
add address=192.168.88.1/24 interface=vlan223-main_to_second_router network=192.168.88.0


Second Base station
/interface ethernet
set [ find default-name=ether4 ] name=ether4-main-link
set [ find default-name=ether5 ] name=ether5-backup_link
/interface bonding
add arp-ip-targets=192.168.112.1 link-monitoring=arp mode=active-backup name=bonding-second_router primary=\
    ether4-main-link slaves=ether4-main-link,ether5-backup_link transmit-hash-policy=layer-2-and-3
/interface vlan
add interface=bonding-second_router name=vlan223-second-to-main-router vlan-id=223
/ip address
add address=192.168.112.2/24 interface=bonding-second_router network=192.168.112.0
add address=192.168.88.2/24 interface=vlan223-second-to-main-router network=192.168.88.0

This is in laboratory config, this devices are not in production, this is just for test.

Image


Do you have experience with this

Thanks a lot,
Best regards
Nikola
 
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StubArea51
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Re: Mikrotik failover bonding for LHG60 Link

Tue Jun 22, 2021 4:43 pm

Consider using an OSPF transit fabric instead of bonding so that you can use all the bandwidth when the speeds aren't equal. You can use it with just OSPF or pair it with eBGP for large scale

I presented at the US MUM in 2017 on this design and we've had a number of WISP clients that have successfully implemented it:

https://www.youtube.com/watch?v=dFZz2z6RdQY

https://mum.mikrotik.com/presentations/ ... 062656.pdf

Image
 
nikola89381
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Topic Author
Posts: 28
Joined: Wed May 17, 2017 4:46 pm

Re: Mikrotik failover bonding for LHG60 Link

Tue Jun 22, 2021 4:48 pm

HI,

Thank you very much for the offered solution . I will check your presentation. I really appreciate this

Nikola
 
dejanjak
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Location: Serbia

Re: Mikrotik failover bonding for LHG60 Link

Fri Nov 19, 2021 11:05 am

Hi,
Is it possible to (successfully) deploy VPLS "on top" of the transit fabric?

I had fine working failover over two WiFi links using OSPF/MPLS/VPLS... By adding several VLANS (same priority to push traffic through both links) I'm seeing traffic going both ways - more less the same amount of tx as Rx (customers' Rx is normally 10x higher than tx).

Torch showed that's MPLS traffic running the wrong way (Eth. Protocol 0x8847)?

Thanks,
Dejan
 
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karina
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Location: Spain

Re: Mikrotik failover bonding for LHG60 Link

Mon Dec 06, 2021 2:49 pm

Try adding an eoip tunnel over each wireless link and bond the eoips rather than the physical interfaces. I found this works better because when the wireless link goes down the eoip tunnel interface goes down triggering the failover mechanism. In your example the ethernet interfaces remain up even though the wireless link is down. I use 802.3ad / mii on layer 2 and 3 for the mode
 
dejanjak
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Location: Serbia

Re: Mikrotik failover bonding for LHG60 Link

Wed Dec 08, 2021 12:19 am

Try adding an eoip tunnel over each wireless link and bond the eoips rather than the physical interfaces. I found this works better because when the wireless link goes down the eoip tunnel interface goes down triggering the failover mechanism. In your example the ethernet interfaces remain up even though the wireless link is down. I use 802.3ad / mii on layer 2 and 3 for the mode
EoIP - tried but not happy with it ...

And, about wireless links : using AF60s, when modulation drops, slave radio disables it's LAN port = ethernet goes down :) ... anyways, OSPF with multiple VLANs is working, but I'm having problems with MPLS/VPLS in that configuration :(

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