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sven_jacobs
sven_jacobs
New Member
December 17, 2020
Question

WAN Failover

  • December 17, 2020
  • 1 reply
  • 1866 views

Hey all

 

I have 2 WAN Links.

 

WAN1 main internet link (fix ip)

WAN2 secundary internet link (dhcp)

 

The idea is that some traffic ( subnets) will be passed to WAN2 and the rest to WAN1 

 

I configured link monitor:

 

 

config system link-monitor
 edit "WAN1"
 set srcintf "wan1"
 set server "8.8.8.8"
 set update-cascade-interface disable
 set update-static-route disable
 next
end

 

Status link

Link Monitor: WAN1, Status: alive, Server num(1), Create time: Thu Dec 17 13:04:34 2020
Source interface: wan1 (5)
Interval: 1
 Peer: 8.8.8.8(8.8.8.8)
 Source IP( )
 Route: ->8.8.8.8/32, gwy( )
 protocol: ping, state: alive
 Latency(Min/Max/Avg): 0.000/30.000/15.000 ms
 Jitter(Min/Max/Avg): 0.000/20.000/7.000
 Packet lost: 0.000%
 Number of out-of-sequence packets: 0
 Fail Times(0/5)
 Packet sent: 3204, received: 3204, Sequence(sent/rcvd/exp): 3205/3205/3206

 

I have an issue when I activate the second interface WAN2 i have a failover to that link?

All my VPN connections breake ..

Strange what am i do wrong.

 

    1 reply

    sw2090
    SuperUser
    sw2090
    SuperUser
    December 17, 2020

    hm I never used that. We use SD-WAN with up to 5 WANs and failover works fine with that.

    Just add a WAN to SD-WAN and add it to some health check (or create a new health check) to have it monitored and it will automatically drop out of sd-wan temporarily if it is detected unavailable.

    SD-WAN will then use the other WANs accoarding to the configured lb algorithm until it comes back.

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